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we present reduced data and data products from the 3d-hst survey, a 248-orbit hst treasury program. the survey obtained wfc3 g141 grism spectroscopy in four of the five candels fields: aegis, cosmos, goods-s, and uds, along with wfc3 h 140 imaging, parallel acs g800l spectroscopy, and parallel i 814 imaging. in a previ... | the 3d-hst survey: hubble space telescope wfc3/g141 grism spectra, redshifts, and emission line measurements for ~ 100,000 galaxies |
the proposed ldmx experiment would provide roughly a meter-long region of instrumented tracking and calorimetry that acts as a beam stop for multi-gev electrons in which each electron is tagged and its evolution measured. this would offer an unprecedented opportunity to access both collider-invisible and ultrashort-lif... | dark matter, millicharges, axion and scalar particles, gauge bosons, and other new physics with ldmx |
this white paper summarizes recent progress in the cosmological bootstrap, an approach to the study of the statistics of primordial fluctuations from consistency with unitarity, locality and symmetry assumptions. we review the key ideas of the bootstrap method, with an eye towards future directions and ambitions of the... | snowmass white paper: the cosmological bootstrap |
this paper presents the third data release of the hyper suprime-cam subaru strategic program (hsc-ssp), a wide-field multi-band imaging survey with the subaru 8.2 m telescope. hsc-ssp has three survey layers (wide, deep, and ultradeep) with different area coverages and depths, designed to address a wide array of astrop... | third data release of the hyper suprime-cam subaru strategic program |
dark matter wimp search with liquid xenon (darwin) will be an experiment for the direct detection of dark matter using a multi-ton liquid xenon time projection chamber at its core. its primary goal will be to explore the experimentally accessible parameter space for weakly interacting massive particles (wimps) in a wid... | darwin: towards the ultimate dark matter detector |
primordial black holes (pbh) arise naturally from high peaks in the curvature power spectrum of near-inflection-point single-field inflation, and could constitute today the dominant component of the dark matter in the universe. in this letter we explore the possibility that a broad spectrum of pbh is formed in models o... | primordial black hole production in critical higgs inflation |
advanced actpol is a polarization-sensitive upgrade for the 6 m aperture atacama cosmology telescope, adding new frequencies and increasing sensitivity over the previous actpol receiver. in 2016, advanced actpol will begin to map approximately half the sky in five frequency bands (28-230 ghz). its maps of primary and s... | advanced actpol cryogenic detector arrays and readout |
we present jwst nirspec prism spectroscopy of gravitationally lensed galaxies at $z\gtrsim9$ found behind the massive galaxy cluster abell 2744 in the uncover cycle 1 treasury program. we confirm the source redshift via emission lines and/or the ly$\alpha$ break feature for ten galaxies at z=8.50-13.08 down to $m_{\rm ... | uncover: a nirspec census of lensed galaxies at z=8.50-13.08 probing a high agn fraction and ionized bubbles in the shadow |
the hubble tension has now grown to a level of significance which can no longer be ignored and calls for a solution which, despite a huge number of attempts, has so far eluded us. significant efforts in the literature have focused on early-time modifications of λcdm, introducing new physics operating prior to recombina... | seven hints that early-time new physics alone is not sufficient to solve the hubble tension |
the underlying physics of qcd phase transition in the early universe remains largely unknown due to its strong-coupling nature during the quark-gluon plasma/hadron gas transition, yet a holographic model has been proposed to quantitatively fit the lattice qcd data while with its duration of the first-order phase transi... | constraints on holographic qcd phase transitions from pta observations |
the symmetry can be broken at high temperature and then restored at low temperature, which is the so-called \emph{high temperature symmetry breaking}. it often appears in some theories such as the high scale electroweak baryogenesis mechanism. in this paper, we probe the high temperature $\mathbb{z}_2$ symmetry breakin... | probing the high temperature symmetry breaking with gravitational waves from domain walls |
we examine interactions between dark matter and dark energy in light of the latest cosmological observations, focusing on a specific model with coupling proportional to the dark energy density. our data includes cosmic microwave background (cmb) measurements from the planck 2018 legacy data release, late-time measureme... | interacting dark energy in the early 2020s: a promising solution to the h0 and cosmic shear tensions |
we review the effective field theory (eft) approach to gravitational dynamics. we focus on extended objects in long-wavelength backgrounds and gravitational wave emission from spinning binary systems. we conclude with an introduction to eft methods for the study of cosmological large scale structures. | the effective field theorist's approach to gravitational dynamics |
the effective number of relativistic neutrino species is a fundamental probe of the early universe, and its measurement represents a key constraint on many scenarios beyond the standard model of particle physics. in light of this, an accurate prediction of neff in the standard model is of pivotal importance. in this wo... | neff in the standard model at nlo is 3.043 |
aims: the euclid space telescope will measure the shapes and redshifts of galaxies to reconstruct the expansion history of the universe and the growth of cosmic structures. the estimation of the expected performance of the experiment, in terms of predicted constraints on cosmological parameters, has so far relied on va... | euclid preparation. vii. forecast validation for euclid cosmological probes |
the current status of baryogenesis is reviewed, with an emphasis on electroweak baryogenesis and leptogenesis. the first detailed studies were carried out for su (5 ) grand unified theory (gut) models where c p -violating decays of leptoquarks generate a baryon asymmetry. these gut models were excluded by the discovery... | baryogenesis from the weak scale to the grand unification scale |
we present results from an analysis of all data taken by the bicep2 and keck array cosmic microwave background (cmb) polarization experiments up to and including the 2014 observing season. this includes the first keck array observations at 95 ghz. the maps reach a depth of 50 nk deg in stokes q and u in the 150 ghz ban... | improved constraints on cosmology and foregrounds from bicep2 and keck array cosmic microwave background data with inclusion of 95 ghz band |
we study the system of axion strings that forms in the early universe if the peccei-quinn symmetry is restored after inflation. using numerical simulations, we establish the existence of an asymptotic solution to which the system is attracted independently of the initial conditions. we study in detail the properties of... | axions from strings: the attractive solution |
desi (dark energy spectropic instrument) is a stage iv ground-based dark energy experiment that will study baryon acoustic oscillations and the growth of structure through redshift-space distortions with a wide-area galaxy and quasar redshift survey. the desi instrument is a robotically-actuated, fiber-fed spectrograph... | the desi experiment part ii: instrument design |
in this paper, we propose a novel mechanism in 𝕋2-inflation to enhance the power spectrum large enough to seed primordial black holes (pbhs) formation. to accomplish this, we consider the coupling function between the inflaton field and 𝕋2 = tμνtμν term. pbhs formed within this scenario can contribute partially or en... | pbhs and gws from 𝕋2-inflation and nanograv 15-year data |
we present new direct-detection constraints on ev-to-gev dark matter interacting with electrons using a prototype detector of the sub-electron-noise skipper-ccd experimental instrument. the results are based on data taken in the minos cavern at the fermi national accelerator laboratory. we focus on data obtained with t... | sensei: direct-detection constraints on sub-gev dark matter from a shallow underground run using a prototype skipper ccd |
cmb-s4-the next-generation ground-based cosmic microwave background (cmb) experiment-is set to significantly advance the sensitivity of cmb measurements and enhance our understanding of the origin and evolution of the universe. among the science cases pursued with cmb-s4, the quest for detecting primordial gravitationa... | cmb-s4: forecasting constraints on primordial gravitational waves |
we present a full λ cdm analysis of the boss dr12 dataset, including information from the power spectrum multipoles, the real-space power spectrum, the reconstructed power spectrum and the bispectrum monopole. this is the first analysis to feature a complete treatment of the galaxy bispectrum, including a consistent th... | boss dr12 full-shape cosmology: λ cdm constraints from the large-scale galaxy power spectrum and bispectrum monopole |
the effective field theory of large-scale structure is a formalism that allows us to predict the clustering of cosmological large-scale structure in the mildly non-linear regime in an accurate and reliable way. after validating our technique against several sets of numerical simulations, we perform the analysis for the... | the cosmological analysis of the sdss/boss data from the effective field theory of large-scale structure |
we present cosmological parameter measurements from the publicly available baryon oscillation spectroscopic survey (boss) data on anisotropic galaxy clustering in fourier space. compared to previous studies, our analysis has two main novel features. first, we use a complete perturbation theory model that properly takes... | cosmological parameters from the boss galaxy power spectrum |
what are the faintest distant galaxies we can see with the hubble space telescope (hst) now, before the launch of the james webb space telescope? this is the challenge taken up by the frontier fields, a director’s discretionary time campaign with hst and the spitzer space telescope to see deeper into the universe than ... | the frontier fields: survey design and initial results |
we study the general infrared behavior of the power spectrum of a stochastic gravitational wave background produced by stress tensor in the form bilinear in certain dynamical degrees of freedom. we find ωgw∝k3 for a very wide class of the sources which satisfy a set of reasonable conditions. namely, the k3 scaling is u... | universal infrared scaling of gravitational wave background spectra |
in the conventional misalignment mechanism, the axion field has a constant initial field value in the early universe and later begins to oscillate. we present an alternative scenario where the axion field has a nonzero initial velocity, allowing an axion decay constant much below the conventional prediction from axion ... | axion kinetic misalignment mechanism |
since the discovery of the first fast radio burst (frb) in 2007, and their confirmation as an abundant extragalactic population in 2013, the study of these sources has expanded at an incredible rate. in our 2019 review on the subject, we presented a growing, but still mysterious, population of frbs—60 unique sources, 2... | fast radio bursts at the dawn of the 2020s |
a new swampland criterion has recently been proposed. as a consequence, it forbids the existence of de sitter solutions in a low energy effective theory of a quantum gravity. however, there exist classical de sitter solutions of ten-dimensional (10d) type ii supergravities, even though they are unstable. this appears a... | on the de sitter swampland criterion |
we review the physics and phenomenology of wave dark matter: a bosonic dark matter candidate lighter than about 30 ev. such particles have a de broglie wavelength exceeding the average interparticle separation in a galaxy like the milky way and are, thus, well described as a set of classical waves. we outline the parti... | wave dark matter |
we analyze the power spectrum and the bispectrum of boss galaxy-clustering data using the prediction from the effective field theory of large-scale structure at one-loop order for $\textit{both}$ the power spectrum $\textit{and}$ the bispectrum. with $\lambda$cdm parameters fixed to planck preferred values, we set limi... | limits on primordial non-gaussianities from boss galaxy-clustering data |
the recent detection of a stochastic signal in the nanograv 15-year data set has aroused great interest in uncovering its origin. however, the evidence for the hellings-downs correlations, a key signature of the gravitational-wave background (gwb) predicted by general relativity, remains inconclusive. in this letter, w... | search for non-tensorial gravitational-wave backgrounds in the nanograv 15-year data set |
fast radio bursts (frbs) are brief radio emissions from distant astronomical sources. some are known to repeat, but most are single bursts. nonrepeating frb observations have had insufficient positional accuracy to localize them to an individual host galaxy. we report the interferometric localization of the single-puls... | a single fast radio burst localized to a massive galaxy at cosmological distance |
a new era of exploring the early universe may have begun with the recent strong evidence for the stochastic gravitational wave (gw) background from the data reported by nanograv, epta (including inpta data), ppta, and cpta. inspired by this, we propose a new potential source of stochastic gws in the minimal supersymmet... | a novel probe of supersymmetry in light of nanohertz gravitational waves |
the einstein telescope (et), the european project for a third-generation gravitational-wave detector, has a reference configuration based on a triangular shape consisting of three nested detectors with 10 km arms, where each detector has a 'xylophone' configuration made of an interferometer tuned toward high frequencie... | science with the einstein telescope: a comparison of different designs |
litebird, the lite (light) satellite for the study of b-mode polarization and inflation from cosmic background radiation detection, is a space mission for primordial cosmology and fundamental physics. the japan aerospace exploration agency (jaxa) selected litebird in may 2019 as a strategic large-class (l-class) missio... | probing cosmic inflation with the litebird cosmic microwave background polarization survey |
we present results from an analysis of all data taken by the bicep2/keck cmb polarization experiments up to and including the 2015 observing season. this includes the first keck array observations at 220 ghz and additional observations at 95 and 150 ghz. the q and u maps reach depths of 5.2, 2.9, and 26 μ kcmb arcmin a... | constraints on primordial gravitational waves using planck, wmap, and new bicep2/keck observations through the 2015 season |
we consider all degenerate scalar-tensor theories that depend quadratically on second-order derivatives of a scalar field, which we have identified in a previous work. these theories, whose degeneracy, in general, ensures the absence of ostrogradsky's instability, include the quartic horndeski lagrangian and its quarti... | degenerate higher order scalar-tensor theories beyond horndeski and disformal transformations |
this paper investigates whether changes to late-time physics can resolve the 'hubble tension'. it is argued that many of the claims in the literature favouring such solutions are caused by a misunderstanding of how distance ladder measurements actually work and, in particular, by the inappropriate use of a distance lad... | to h0 or not to h0? |
we derive constraints on cosmological parameters and tests of dark energy models from the combination of baryon acoustic oscillation (bao) measurements with cosmic microwave background (cmb) data and a recent reanalysis of type ia supernova (sn) data. in particular, we take advantage of high-precision bao measurements ... | cosmological implications of baryon acoustic oscillation measurements |
we develop a mellin space approach to boundary correlation functions in anti-de sitter (ads) and de sitter (ds) spaces. using the mellin-barnes representation of correlators in fourier space, we show that the analytic continuation between adsd+1 and dsd+1 is encoded in a collection of simple relative phases. this allow... | bootstrapping inflationary correlators in mellin space |
compact steep-spectrum (css) and peaked-spectrum (ps) radio sources are compact, powerful radio sources. the multi-frequency observational properties and current theories are reviewed with emphasis on developments since the earlier review of o'dea (pasp 110:493-532, https://doi.org/10.1086/316162, 1998). there are thre... | compact steep-spectrum and peaked-spectrum radio sources |
in this work we introduce a new theoretical framework for einstein-gauss-bonnet theories of gravity, which results to particularly elegant, functionally simple and transparent gravitational equations of motion, slow-roll indices and the corresponding observational indices. the main requirement is that the einstein-gaus... | rectifying einstein-gauss-bonnet inflation in view of gw170817 |
we study the cosmological effects of two-body dark matter decays in which the products of the decay include a massless and a massive particle. we show that if the massive daughter particle is slightly warm it is possible to relieve the tension between distance ladder measurements of the present-day hubble parameter wit... | dark matter decaying in the late universe can relieve the h0 tension |
we perform a bayesian search in the latest pulsar timing array (pta) datasets for a stochastic gravitational wave (gw) background sourced by curvature perturbations at scales 10^5105 mpc^{-1}\lesssim−1≲ k\lesssim 10^8≲108 mpc^{-1}−1. these re-enter the hubble horizon at temperatures around and below the qcd crossover p... | search for scalar induced gravitational waves in the international pulsar timing array data release 2 and nanograv 12.5 years datasets |
the indirect detection of dark matter annihilation and decay using observations of photons, charged cosmic rays and neutrinos offers a promising means of identifying the particle nature of this elusive component of the universe. the last decade has seen substantial advances in observational data-sets, complemented by n... | a review of indirect searches for particle dark matter |
the search for particle-like dark matter with mev-to-gev masses has developed rapidly in the past few years. we summarize the science case for these searches, the recent progress, and the exciting upcoming opportunities. funding for research and development and a portfolio of small dark matter projects will allow the c... | snowmass2021 cosmic frontier: the landscape of low-threshold dark matter direct detection in the next decade |
we analyze rest-frame ultraviolet to optical spectra of three $z\simeq7.47$ - $7.75$ galaxies whose ly$\alpha$-emission lines were previously detected with keck/mosfire observations, using the jwst/nirspec observations from the cosmic evolution early release science (ceers) survey. from nirspec data, we confirm the sys... | ceers: diversity of lyman-alpha emitters during the epoch of reionization |
dampe satellite has directly measured the cosmic ray proton spectrum from 40 gev to 100 tev and revealed a new feature at about 13.6 tev.the precise measurement of the spectrum of protons, the most abundant component of the cosmic radiation, is necessary to understand the source and acceleration of cosmic rays in the m... | measurement of the cosmic ray proton spectrum from 40 gev to 100 tev with the dampe satellite |
flat $\lambda$cdm cosmology is specified by two constant fitting parameters in the late universe, the hubble constant $h_0$ and matter density (today) $\omega_m$. in the cosmology literature, one typically \textit{assumes} that there is no redshift evolution of cosmological parameters when one fits data sets. here, in ... | putting flat $\\lambda$cdm in the (redshift) bin |
with the advent of gravitational-wave astronomy marked by the aligo gw150914 and gw151226 observations, a measurement of the cosmological speed of gravity will likely soon be realised. we show that a confirmation of equality to the speed of light as indicated by indirect galactic observations will have important conseq... | challenges to self-acceleration in modified gravity from gravitational waves and large-scale structure |
we perform a comprehensive study of milky way (mw) satellite galaxies to constrain the fundamental properties of dark matter (dm). this analysis fully incorporates inhomogeneities in the spatial distribution and detectability of mw satellites and marginalizes over uncertainties in the mapping between galaxies and dm ha... | constraints on dark matter properties from observations of milky way satellite galaxies |
we study the formation of primordial black holes (pbhs) in strongly super-cooled first-order phase transitions. the mechanism is based on the presence of remnants dominated by the false vacuum that scale slower with the expansion of the universe than their surroundings where this energy was already converted into radia... | primordial black holes from strong first-order phase transitions |
we review several current aspects of dark matter theory and experiment. we overview the present experimental status, which includes current bounds and recent claims and hints of a possible signal in a wide range of experiments: direct detection in underground laboratories, gamma-ray, cosmic ray, x-ray, neutrino telesco... | wimp dark matter candidates and searches—current status and future prospects |
in a growing number of galaxy clusters diffuse extended radio sources have been found. these sources are not directly associated with individual cluster galaxies. the radio emission reveal the presence of cosmic rays and magnetic fields in the intracluster medium (icm). we classify diffuse cluster radio sources into ra... | diffuse radio emission from galaxy clusters |
recently, pulsar timing array (pta) collaborations announced evidence for an isotropic stochastic gravitational wave (gw) background. the origin of the pta signal can be astrophysical or cosmological. in the latter case, the so-called secondary scalar-induced gw scenario is one of the viable explanations, but it has a ... | extra-tensor-induced origin for the pta signal: no primordial black hole production |
recently the international pulsar timing array collaboration has announced the first strong evidence for an isotropic gravitational wave background (gwb). we propose that rapid small oscillations (wiggles) in the hubble parameter would trigger a resonance with the propagating gravitational waves, leaving novel signatur... | can the gravitational wave background feel wiggles in spacetime? |
motivated by the recent release of new results from five different pulsar timing array (pta) experiments claiming to have found compelling evidence for primordial gravitational waves (gw) at nano-hz frequencies, we consider the prospects of generating such a signal from inflationary blue-tilted tensor power spectrum in... | imprint of inflationary gravitational waves and wimp dark matter in pulsar timing array data |
gravitational wave signal offers a promising window into the dynamics of the early universe. the recent results from pulsar timing arrays (ptas) could be the first glimpse of such new physics. in particular, they could point to new details during the inflation, which can not be probed by other means. we explore the pos... | phase transition during inflation and the gravitational wave signal at pulsar timing arrays |
we propose a type ii seesaw model for light dirac neutrinos to provide an explanation for the recently reported anomaly in w boson mass by the cdf collaboration with 7σ statistical significance. in the minimal model, the required enhancement in w boson mass is obtained at tree level due to the vacuum expectation value ... | type ii dirac seesaw with observable δneff in the light of w-mass anomaly |
the γ-ray sky can be decomposed into individually detected sources, diffuse emission attributed to the interactions of galactic cosmic rays with gas and radiation fields, and a residual all-sky emission component commonly called the isotropic diffuse γ-ray background (igrb). the igrb comprises all extragalactic emissio... | the spectrum of isotropic diffuse gamma-ray emission between 100 mev and 820 gev |
given the proliferation of bouncing models in recent years, we gather and critically assess these proposals in a comprehensive review. the planck data shows an unmistakably red, quasi scale-invariant, purely adiabatic primordial power spectrum and no primary non-gaussianities. while these observations are consistent wi... | a critical review of classical bouncing cosmologies |
the nanograv collaboration has recently published strong evidence for a stochastic common-spectrum process that may be interpreted as a stochastic gravitational wave background. we show that such a signal can be explained by second-order gravitational waves produced during the formation of primordial black holes from t... | nanograv data hints at primordial black holes as dark matter |
this article presents an analysis and the resulting limits on light dark matter inelastically scattering off of electrons, and on dark photon and axionlike particle absorption, using a second-generation supercdms high-voltage ev-resolution detector. the 0.93 g si detector achieved a 3 ev phonon energy resolution; for a... | constraints on low-mass, relic dark matter candidates from a surface-operated supercdms single-charge sensitive detector |
a novel mechanism for the primordial black hole (pbh) production is proposed as a natural and inevitable consequence of general first-order phase transitions without reference to specific underlying particle physics models. we obtain mutual predictions and constraints between primordial black holes and gravitational wa... | primordial black hole production during first-order phase transitions |
we propose a novel primordial black hole (pbh) formation mechanism based on a first-order phase transition (fopt). if a fermion species gains a huge mass in the true vacuum, the corresponding particles get trapped in the false vacuum as they do not have sufficient energy to penetrate the bubble wall. after the fopt, th... | primordial black holes from a cosmic phase transition: the collapse of fermi-balls |
we present a detailed overview of the cosmological surveys that we aim to carry out with phase 1 of the square kilometre array (ska1) and the science that they will enable. we highlight three main surveys: a medium-deep continuum weak lensing and low-redshift spectroscopic hi galaxy survey over 5 000 deg2; a wide and d... | cosmology with phase 1 of the square kilometre array red book 2018: technical specifications and performance forecasts |
recently, pulsar timing array (pta) experiments have provided compelling evidence for the existence of the nanohertz stochastic gravitational wave background (sgwb). in this work, we demonstrated that cosmic string loops generated from cosmic global strings offer a viable explanation for the observed nanohertz sgwb dat... | the nanohertz stochastic gravitational wave background from cosmic string loops and the abundant high redshift massive galaxies |
pulsar timing arrays (ptas) are galactic-scale gravitational wave (gw) detectors. each individual arm, composed of a millisecond pulsar, a radio telescope, and a kiloparsecs-long path, differs in its properties but, in aggregate, can be used to extract low-frequency gw signals. we present a noise and sensitivity analys... | the nanograv 15 yr data set: detector characterization and noise budget |
this is a transcript of a talk that i gave in cambridge on 17th july 2020 on the `hubble tension'. i review the sh0es analyses by riess and collaborators and point out some internal inconsistencies, including a discrepancy between the relative distances inferred from cepheids of two of the primary geometric distance an... | a lockdown perspective on the hubble tension (with comments from the sh0es team) |
this review describes recent developments related to the unified model of active galactic nuclei (agns). it focuses on new ideas about the origin and properties of the central obscurer (torus) and the connection to its surroundings. the review does not address radio unification. agn tori must be clumpy but uncertaintie... | revisiting the unified model of active galactic nuclei |
the fourth catalog of active galactic nuclei (agns) detected by the fermi gamma-ray space telescope large area telescope (4lac) between 2008 august 4 and 2016 august 2 contains 2863 objects located at high galactic latitudes (|b| > 10°). it includes 85% more sources than the previous 3lac catalog based on 4 yr of da... | the fourth catalog of active galactic nuclei detected by the fermi large area telescope |
the xenon1t experiment is currently in the commissioning phase at the laboratori nazionali del gran sasso, italy. in this article we study the experiment's expected sensitivity to the spin-independent wimp-nucleon interaction cross section, based on monte carlo predictions of the electronic and nuclear recoil backgroun... | physics reach of the xenon1t dark matter experiment. |
so far, roughly 40 quasars with redshifts greater than z = 6 have been discovered. each quasar contains a black hole with a mass of about one billion solar masses (109 ). the existence of such black holes when the universe was less than one billion years old presents substantial challenges to theories of the formation ... | an ultraluminous quasar with a twelve-billion-solar-mass black hole at redshift 6.30 |
we introduce a family of solutions of einstein's gravity minimally coupled to an anisotropic fluid, describing asymptotically flat black holes with "hair" and a regular horizon. these spacetimes can describe the geometry of galaxies harboring supermassive black holes, and are extensions of einstein clusters to include ... | black holes in galaxies: environmental impact on gravitational-wave generation and propagation |
the dark energy spectroscopic instrument (desi) embarked on an ambitious 5 yr survey in 2021 may to explore the nature of dark energy with spectroscopic measurements of 40 million galaxies and quasars. desi will determine precise redshifts and employ the baryon acoustic oscillation method to measure distances from the ... | overview of the instrumentation for the dark energy spectroscopic instrument |
the current cosmological model requires new physics beyond the standard model of elementary particles and fields, such as dark matter and dark energy. their nature is unknown and so is that of the initial fluctuations in the early universe that led to the creation of the cosmic structure we see today. polarized light o... | new physics from the polarized light of the cosmic microwave background |
we present the results of a search for dark matter weakly interacting massive particles (wimps) in the mass range below 20 gev /c2 using a target of low-radioactivity argon with a 6786.0 kg d exposure. the data were obtained using the darkside-50 apparatus at laboratori nazionali del gran sasso. the analysis is based o... | low-mass dark matter search with the darkside-50 experiment |
despite growing interest and extensive effort to search for ultralight dark matter in the form of a hypothetical dark photon, how it fits into a consistent cosmology is unclear. several dark photon dark matter production mechanisms proposed previously are known to have limitations, at least in certain mass regimes of e... | dark photon dark matter produced by axion oscillations |
jwst has revolutionized the field of extragalactic astronomy with its sensitive and high-resolution infrared view of the distant universe. adding to the new legacy of jwst observations, we present the first nircam imaging data release from the jwst advanced deep extragalactic survey (jades), providing nine filters of i... | jades initial data release for the hubble ultra deep field: revealing the faint infrared sky with deep jwst nircam imaging |
the origin of high-energy cosmic rays, atomic nuclei that continuously impact earth’s atmosphere, is unknown. because of deflection by interstellar magnetic fields, cosmic rays produced within the milky way arrive at earth from random directions. however, cosmic rays interact with matter near their sources and during p... | observation of high-energy neutrinos from the galactic plane |
pulsar timing data used to provide upper limits on a possible stochastic gravitational wave background (sgwb). however, the nanograv collaboration has recently reported strong evidence for a stochastic common-spectrum process, which we interpret as a sgwb in the framework of cosmic strings. the possible nanograv signal... | cosmic string interpretation of nanograv pulsar timing data |
the universal character of the gravitational interaction provided by the equivalence principle motivates a geometrical description of gravity. the standard formulation of general relativity à la einstein attributes gravity to the spacetime curvature, to which we have grown accustomed. however, this perception has maske... | cosmology in f (q ) geometry |
we study hidden-sector particles at past (cern-hamburg-amsterdam-rome-moscow collaboration and nucal), present (na62, seaquest, and darkquest), and future (longquest) experiments at the high-energy intensity frontier. we focus on exploring the minimal vector portal and the next-to-minimal models in which the production... | dark photon and muon g -2 inspired inelastic dark matter models at the high-energy intensity frontier |
we report the first plausible optical electromagnetic counterpart to a (candidate) binary black hole merger. detected by the zwicky transient facility, the electromagnetic flare is consistent with expectations for a kicked binary black hole merger in the accretion disk of an active galactic nucleus [b. mckernan, k. e. ... | candidate electromagnetic counterpart to the binary black hole merger gravitational-wave event s190521g* |
current cosmological data exhibit a tension between inferences of the hubble constant, h0, derived from early and late-universe measurements. one proposed solution is to introduce a new component in the early universe, which initially acts as "early dark energy" (ede), thus decreasing the physical size of the sound hor... | early dark energy does not restore cosmological concordance |
we present new measurements of the free-streaming of warm dark matter (wdm) from lyman-α flux-power spectra. we use data from the medium resolution, intermediate redshift xq-100 sample observed with the x-shooter spectrograph (z =3 - 4.2 ) and the high-resolution, high-redshift sample used in viel et al. (2013) obtaine... | new constraints on the free-streaming of warm dark matter from intermediate and small scale lyman-α forest data |
the nature of dark matter and properties of neutrinos are among the most pressing issues in contemporary particle physics. the dual-phase xenon time-projection chamber is the leading technology to cover the available parameter space for weakly interacting massive particles, while featuring extensive sensitivity to many... | a next-generation liquid xenon observatory for dark matter and neutrino physics |
we present a measurement of the hubble constant made using geometric distance measurements to megamaser-hosting galaxies. we have applied an improved approach for fitting maser data and obtained better distance estimates for four galaxies previously published by the megamaser cosmology project: ugc 3789, ngc 6264, ngc ... | the megamaser cosmology project. xiii. combined hubble constant constraints |
the first model independent results obtained by the dama/libra-phase2 experiment are presented. the data have been collected over 6 annual cycles corresponding to a total exposure of 1.13 ton $\times$ yr, deep underground at the gran sasso national laboratory (lngs) of the i.n.f.n. the dama/libra-phase2 apparatus, $\si... | first model independent results from dama/libra-phase2 |
we explore whether nonstandard dark sector physics might be required to solve the existing cosmological tensions. the properties we consider in combination are (a) an interaction between the dark matter and dark energy components and (b) a dark energy equation of state w different from that of the canonical cosmologica... | nonminimal dark sector physics and cosmological tensions |
context. the assembly history experienced by the milky way is currently being unveiled thanks to the data provided by the gaia mission. it is likely that the globular cluster system of our galaxy has followed a similarly intricate formation path.aims: to constrain this formation path, we explore the link between the gl... | origin of the system of globular clusters in the milky way |
primordial black holes (pbh) have been shown to arise from high peaks in the matter power spectra of multi-field models of inflation. here we show, with a simple toy model, that it is also possible to generate a peak in the curvature power spectrum of single-field inflation. we assume that the effective dynamics of the... | primordial black holes from single field models of inflation |
a new realization of the international celestial reference frame (icrf) is presented based on the work achieved by a working group of the international astronomical union (iau) mandated for this purpose. this new realization follows the initial realization of the icrf completed in 1997 and its successor, icrf2, adopted... | the third realization of the international celestial reference frame by very long baseline interferometry |
de sitter solutions have been recently conjectured to be incompatible with quantum gravity. in this paper we critically assess the progress and challenges of different mechanisms to obtain de sitter vacua in string compactifications and compare them to quintessence models. we argue that, despite recent criticisms, de s... | de sitter vs quintessence in string theory |
uncovering the nature of dark matter is one of the most important goals of particle physics. light bosonic particles, such as the dark photon, are well-motivated candidates: they are generally long-lived, weakly interacting, and naturally produced in the early universe. in this work, we report on light a' multilayer pe... | new constraints on dark photon dark matter with superconducting nanowire detectors in an optical haloscope |
analysis of the planck 2018 data set indicates that the statistical properties of the cosmic microwave background (cmb) temperature anisotropies are in excellent agreement with previous studies using the 2013 and 2015 data releases. in particular, they are consistent with the gaussian predictions of the λcdm cosmologic... | planck 2018 results. vii. isotropy and statistics of the cmb |
cmb-hd is a proposed millimeter-wave survey over half the sky that would be ultra-deep (0.5 uk-arcmin) and have unprecedented resolution (15 arcseconds at 150 ghz). such a survey would answer many outstanding questions about the fundamental physics of the universe. major advances would be 1.) the use of gravitational l... | snowmass2021 cmb-hd white paper |
we present the most significant measurement of the cosmic microwave background (cmb) lensing potential to date (at a level of 40σ), using temperature and polarization data from the planck 2015 full-mission release. using a polarization-only estimator, we detect lensing at a significance of 5σ. we cross-check the accura... | planck 2015 results. xv. gravitational lensing |
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