abstract stringlengths 3 192k | title stringlengths 4 857 |
|---|---|
we present the results of a global analysis of the neutrino oscillation data available as of fall 2018 in the framework of three massive mixed neutrinos with the goal at determining the ranges of allowed values for the six relevant parameters. we describe the complementarity and quantify the tensions among the results ... | global analysis of three-flavour neutrino oscillations: synergies and tensions in the determination of θ 23, δ cp, and the mass ordering |
a new class of solutions to the electroweak hierarchy problem is presented that does not require either weak-scale dynamics or anthropics. dynamical evolution during the early universe drives the higgs boson mass to a value much smaller than the cutoff. the simplest model has the particle content of the standard model ... | cosmological relaxation of the electroweak scale |
since the discovery of neutrino oscillations, we know that neutrinos have non-zero mass. however, the absolute neutrino-mass scale remains unknown. here we report the upper limits on effective electron anti-neutrino mass, mν, from the second physics run of the karlsruhe tritium neutrino experiment. in this experiment, ... | direct neutrino-mass measurement with sub-electronvolt sensitivity |
we show how several properties of the qcd axion can be extracted at high precision using only first principle qcd computations. by combining nlo results obtained in chiral perturbation theory with recent lattice qcd results the full axion potential, its mass and the coupling to photons can be reconstructed with percent... | the qcd axion, precisely |
the existence of nonzero neutrino masses points to the likely existence of multiple standard model neutral fermions. when such states are heavy enough that they cannot be produced in oscillations, they are referred to as heavy neutral leptons (hnls). in this white paper, we discuss the present experimental status of hn... | the present and future status of heavy neutral leptons |
neutrinoless double-beta decay is a forbidden, lepton-number-violating nuclear transition whose observation would have fundamental implications for neutrino physics, theories beyond the standard model, and cosmology. in this review, we summarize the theoretical progress to understand this process, the expectations and ... | neutrinoless double-beta decay: status and prospects |
there has recently been a dramatic renewal of interest in hadron spectroscopy and charm physics. this renaissance has been driven in part by the discovery of a plethora of charmonium-like xyz states at besiii and b factories, and the observation of an intriguing proton-antiproton threshold enhancement and the possibly ... | future physics programme of besiii |
it is for the first time that quantum simulation for high-energy physics (hep) is studied in the u.s. decadal particle-physics community planning, and in fact until recently, this was not considered a mainstream topic in the community. this fact speaks of a remarkable rate of growth of this subfield over the past few y... | quantum simulation for high-energy physics |
we explore constraints on gauge bosons of a weakly coupled u(1) b - l , u{(1)}_{l_{μ }-{l}_e}, u{(1)}_{l_e-{l}_{τ }} and u{(1)}_{l_{μ }-{l}_{τ }} . to do so we apply the full constraining power of experimental bounds derived for a hidden photon of a secluded u(1) xand translate them to the considered gauge groups. in c... | hunting all the hidden photons |
the germanium detector array (gerda) experiment searched for the lepton-number-violating neutrinoless double-β (0 ν β β ) decay of 76ge , whose discovery would have far-reaching implications in cosmology and particle physics. by operating bare germanium diodes, enriched in 76ge, in an active liquid argon shield, gerda ... | final results of gerda on the search for neutrinoless double-β decay |
we review the status of searches for sterile neutrinos in the ∼ 1 ev range, with an emphasis on the latest results from short baseline oscillation experiments and how they fit within sterile neutrino oscillation models. we present global fit results to a three-active-flavor plus one-sterile-flavor model (3+1), where we... | where are we with light sterile neutrinos? |
we perform a model-exhaustive analysis of all possible beyond standard model (bsm) solutions to the (g -2 )μ anomaly to study production of the associated new states at future muon colliders, and we formulate a no-lose theorem for the discovery of new physics if the anomaly is confirmed and weakly coupled solutions bel... | no-lose theorem for discovering the new physics of (g -2 )μ at muon colliders |
we propose an algebra of operators along an observer's worldline as a background-independent algebra in quantum gravity. in that context, it is natural to think of the hartle-hawking no boundary state as a universal state of maximum entropy, and to define entropy in terms of the relative entropy with this state. in the... | a background independent algebra in quantum gravity |
we present all scalar-tensor lagrangians that are cubic in second derivatives of a scalar field, and that are degenerate, hence avoiding ostrogradsky instabilities. thanks to the existence of constraints, they propagate no more than three degrees of freedom, despite having higher order equations of motion. we also dete... | degenerate higher order scalar-tensor theories beyond horndeski up to cubic order |
we study the phenomenological implications of the modular symmetry γ(3) ≃ a 4 of lepton flavors facing recent experimental data of neutrino oscillations. the mass matrices of neutrinos and charged leptons are essentially given by fixing the expectation value of modulus τ, which is the only source of modular invariance ... | modular a4 invariance and neutrino mixing |
we address the phenomenology of light sterile neutrinos, with an emphasis on short-baseline neutrino oscillations. after reviewing the observed short-baseline neutrino oscillation anomalies, we discuss the global fit of the data and the current appearance-disappearance tension. we also review briefly the effects of lig... | ev-scale sterile neutrinos |
within the standard 3ν mass-mixing framework, we present an up-to-date global analysis of neutrino oscillation data (as of january 2016), including the latest available results from experiments with atmospheric neutrinos (super-kamiokande and icecube deepcore), at accelerators (first t2k ν ‾ and no νaν runs in both app... | neutrino masses and mixings: status of known and unknown 3ν parameters |
heavy-ion collisions at bnl's relativistic heavy ion collider and cern's large hadron collider provide strong evidence for the formation of a quark-gluon plasma, with temperatures extracted from relativistic viscous hydrodynamic simulations shown to be well above the transition temperature from hadron matter. outstandi... | qcd thermalization: ab initio approaches and interdisciplinary connections |
fundamental principles of local quantum field theory or of quantum gravity can enforce consistency requirements on the space of consistent low-energy effective field theories. we survey the various techniques that have been used to put uv constraints on ir physics, including those from causality considerations in the f... | snowmass white paper: uv constraints on ir physics |
the integrated luminosities of data samples collected in the besiii experiment in 2016-2017 at center-of-mass energies between 4.19 and 4.28 gev are measured with a precision better than 1% by analyzing large-angle bhabha scattering events. the integrated luminosities of old datasets collected in 2010-2014 are updated ... | measurement of integrated luminosities at besiii for data samples at center-of-mass energies between 4.0 and 4.6 gev |
we study the problem of designing models for machine learning tasks defined on \emph{sets}. in contrast to traditional approach of operating on fixed dimensional vectors, we consider objective functions defined on sets that are invariant to permutations. such problems are widespread, ranging from estimation of populati... | deep sets |
faser is a proposed small and inexpensive experiment designed to search for light, weakly-interacting particles during run 3 of the lhc from 2021-23. such particles may be produced in large numbers along the beam collision axis, travel for hundreds of meters without interacting, and then decay to standard model particl... | technical proposal for faser: forward search experiment at the lhc |
the observation of neutrino oscillations and hence non-zero neutrino masses provided a milestone in the search for physics beyond the standard model. but even though we now know that neutrinos are massive, the nature of neutrino masses, i.e., whether they are dirac or majorana, remains an open question. a smoking-gun s... | neutrinoless double-beta decay: a roadmap for matching theory to experiment |
positivity bounds are powerful tools to constrain effective field theories. utilizing the partial wave expansion in the dispersion relation and the full crossing symmetry of the scattering amplitude, we derive several sets of generically nonlinear positivity bounds for a generic scalar effective field theory: we refer ... | new positivity bounds from full crossing symmetry |
using inclusive decays of $j/\psi $ , a precise determination of the number of $j/\psi $ events collected with the besiii detector was performed. for the two data sets taken in 2009 and 2012, the numbers of $j/\psi $ events were recalculated to be $ (224.0 \pm 1.3)\times10^6 $ and $ (1088.5 \pm 4.4)\times10^6 $ , respe... | number of j/ψ events at besiii |
from december 2019 to june 2021, the besiii experiment collected approximately 5.85 fb-1 of data at center-of-mass energies between 4.61 and 4.95 gev. this is the highest collision energy bepcii has reached to date. the accumulated $e^+e^-$ annihilation data samples are useful for studying charmonium(-like) states and ... | luminosities and energies of e + e - collision data taken between {\\sqrt{\\boldsymbol s}} =4.61 gev and 4.95 gev at besiii |
the precise value of the mean neutron lifetime, τn, plays an important role in nuclear and particle physics and cosmology. it is used to predict the ratio of protons to helium atoms in the primordial universe and to search for physics beyond the standard model of particle physics. we eliminated loss mechanisms present ... | measurement of the neutron lifetime using a magneto-gravitational trap and in situ detection |
we show that the relaxion generically stops its rolling at a point that breaks cp leading to relaxion-higgs mixing. this opens the door to a variety of observational probes since the possible relaxion mass spans a broad range from sub-ev to the gev scale. we derive constraints from current experiments (fifth force, ast... | phenomenology of relaxion-higgs mixing |
we propose a precise reformulation of 3d quantum gravity with negative cosmological constant in terms of a topological quantum field theory based on the quantization of the teichmüller space of riemann surfaces that we refer to as "virasoro tqft". this tqft is similar, but importantly not equivalent, to sl(2, \mathbb{r... | solving 3d gravity with virasoro tqft |
we argue that the qcd axion can arise from many aligned axions with decay constants much smaller than the conventional axion window. if the typical decay constant is of o (100) gev to 1 tev, one or more of the axions or saxions may account for the recently found diphoton excess at ∼ 750 gev. our scenario predicts many ... | the qcd axion from aligned axions and diphoton excess |
we present a connection between the physics of cosmological time evolution and the mathematics of positive geometries, roughly analogous to similar connections seen in the context of scattering amplitudes. we consider the wavefunction of the universe in a class of toy models of conformally coupled scalars (with non-con... | cosmological polytopes and the wavefunction of the universe |
the observation of neutrons turning into antineutrons would constitute a discovery of fundamental importance for particle physics and cosmology. observing the n- n ¯ transition would show that baryon number (b) is violated by two units and that matter containing neutrons is unstable. it would provide a clue to how the ... | neutron-antineutron oscillations: theoretical status and experimental prospects |
neutrino oscillations have become well-known phenomena; the measurements of neutrino mixing angles and mass squared differences are continuously improving. future oscillation experiments will eventually determine the remaining unknown neutrino parameters, namely, the mass ordering, normal or inverted, and the cp-violat... | non standard neutrino interactions: current status and future prospects |
we study quantum field theory on a de sitter spacetime dsd+1 background. our main tool is the hilbert space decomposition in irreducible unitary representations of its isometry group so(d + 1, 1). as the first application of the hilbert space formalism, we recover the källen-lehmann spectral decomposition of the scalar... | towards the non-perturbative cosmological bootstrap |
we present simulations of nonequilibrium dynamics of quantum field theories on digital quantum computers. as a representative example, we consider the schwinger model, a (1 +1 )-dimensional u(1) gauge theory, coupled through a yukawa-type interaction to a thermal environment described by a scalar field theory. we use t... | quantum simulation of nonequilibrium dynamics and thermalization in the schwinger model |
from december 2011 to may 2014, about 5 fb-1 of data were taken with the besiii detector at center-of-mass energies between 3.810 gev and 4.600 gev to study the charmonium-like states and higher excited charmonium states. the time-integrated luminosity of the collected data sample is measured to a precision of 1% by an... | precision measurement of the integrated luminosity of the data taken by besiii at center-of-mass energies between 3.810 gev and 4.600 gev |
these lecture notes, suitable for a two-semester introductory course or self-study, offer an elementary and self-contained exposition of the basic tools and concepts that are encountered in practical computations in perturbative thermal field theory. selected applications to heavy ion collision physics and cosmology ar... | basics of thermal field theory |
given its briefness and predictability, the minimal seesaw—a simplified version of the canonical seesaw mechanism with only two right-handed neutrino fields—has been studied in depth and from many perspectives, and now it is being pushed close to a position of directly facing experimental tests. this article is intende... | the minimal seesaw and leptogenesis models |
the germanium detector array (gerda) experiment searched for the lepton-number-violating neutrinoless double-$\beta$ ($0\nu\beta\beta$) decay of $^{76}$ge, whose discovery would have far-reaching implications in cosmology and particle physics. by operating bare germanium diodes, enriched in $^{76}$ge, in an active liqu... | final results of gerda on the search for neutrinoless double-$\\beta$ decay |
we study quark and lepton mass matrices in the a4 modular symmetry towards the unification of the quark and lepton flavors. we adopt modular forms of weights 2 and 6 for quarks and charged leptons, while we use modular forms of weight 4 for the neutrino mass matrix which is generated by the weinberg operator. we obtain... | towards unification of quark and lepton flavors in a4 modular invariance |
chiral higher spin gravity with cosmological constant is constructed as a free differential algebra, i.e. at the level of equations of motion, which is a smooth deformation of its flat space cousin [34]. chiral higher spin gravity is a unique class of local higher spin theories; its very existence implies that there is... | chiral higher spin gravity in (a)ds4 and secrets of chern-simons matter theories |
the analytic conformal bootstrap is an array of techniques to characterize, constrain, and solve strongly interacting quantum field theories using symmetries, causality, unitarity, and other general principles. in the last decade, bolstered by the development of new lorentzian methods, it has been used to solve conform... | snowmass white paper: the analytic conformal bootstrap |
cosmological fluctuations retain a memory of the physics that generated them in their spatial correlations. the strength of correlations varies smoothly as a function of external kinematics, which is encoded in differential equations satisfied by cosmological correlation functions. in this work, we provide a broader pe... | differential equations for cosmological correlators |
at the interface of classical and quantum physics, the maxwell and schrödinger equations describe how optical fields drive and control electronic phenomena to enable lightwave electronics at terahertz or petahertz frequencies and on ultrasmall scales1-5. the electric field of light striking a metal interacts with elect... | plasmonic topological quasiparticle on the nanometre and femtosecond scales |
scattering amplitudes at weak coupling are highly constrained by lorentz invariance, locality and unitarity, and depend on model details only through coupling constants and the particle content of the theory. for example, four-particle amplitudes are analytic for contact interactions and have simple poles with appropri... | the cosmological bootstrap: inflationary correlators from symmetries and singularities |
a comprehensive review of physics at an linear collider in the energy range of gev-3 tev is presented in view of recent and expected lhc results, experiments from low-energy as well as astroparticle physics. the report focusses in particular on higgs-boson, top-quark and electroweak precision physics, but also discusse... | physics at the linear collider |
this paper pushes forward a conjecture made in [1] that a high-temperature double-scaled limit of the syk model ($\mathrm{dssyk}_{\infty}$) describes a de sitter-like space. we identify a specific bulk theory which we conjecture to be dual to $\mathrm{dssyk}_{\infty}$, namely jt gravity with positive cosmological const... | ds jt gravity and double-scaled syk |
the zwicky transient facility (ztf) is a new optical time-domain survey that uses the palomar 48 inch schmidt telescope. a custom-built wide-field camera provides a 47 deg2 field of view and 8 s readout time, yielding more than an order of magnitude improvement in survey speed relative to its predecessor survey, the pa... | the zwicky transient facility: system overview, performance, and first results |
this paper describes the organization of the database and the catalog data products from the pan-starrs1 3π steradian survey. the catalog data products are available in the form of an sql-based relational database from mast, the mikulski archive for space telescopes at stsci. the database is described in detail, includ... | the pan-starrs1 database and data products |
we present a new global fit of neutrino oscillation parameters within the simplest three-neutrino picture, including new data which appeared since our previous analysis [1]. in this update we include new long-baseline neutrino data involving the antineutrino channel in t2k, as well as new data in the neutrino channel, ... | status of neutrino oscillations 2018: 3σ hint for normal mass ordering and improved cp sensitivity |
we provide an overview of the design and capabilities of the near-infrared spectrograph (nirspec) onboard the james webb space telescope. nirspec is designed to be capable of carrying out low-resolution (r = 30−330) prism spectroscopy over the wavelength range 0.6-5.3 μm and higher resolution (r = 500−1340 or r = 1320−... | the near-infrared spectrograph (nirspec) on the james webb space telescope. i. overview of the instrument and its capabilities |
the near infrared camera for the james webb space telescope (jwst) is delivering the imagery that astronomers have hoped for ever since jwst was proposed back in the 1990s. in the commissioning period that extended from right after launch to early 2022 july, nircam has been subjected to a number of performance tests an... | performance of nircam on jwst in flight |
we present an incremental version (4fgl-dr2, for data release 2) of the fourth fermi-lat catalog of gamma-ray sources. based on the first ten years of science data in the energy range from 50 mev to 1 tev, it uses the same analysis methods as the 4fgl catalog did for eight years of data. the spectral parameters, spectr... | fermi large area telescope fourth source catalog data release 2 |
astroquery is a collection of tools for requesting data from databases hosted on remote servers with interfaces exposed on the internet, including those with web pages but without formal application program interfaces. these tools are built on the python requests package, which is used to make http requests, and astrop... | astroquery: an astronomical web-querying package in python |
we present a new global fit of neutrino oscillation parameters within the simplest three-neutrino picture, including new data which appeared since our previous analysis~\cite{forero:2014bxa}. in this update we include new long-baseline neutrino data involving the antineutrino channel in t2k, as well as new data in the ... | status of neutrino oscillations 2018: first hint for normal mass ordering and improved cp sensitivity |
launched on 2021 december 9, the imaging x-ray polarimetry explorer (ixpe) is a nasa small explorer mission in collaboration with the italian space agency (asi). the mission will open a new window of investigation—imaging x-ray polarimetry. the observatory features three identical telescopes, each consisting of a mirro... | the imaging x-ray polarimetry explorer (ixpe): pre-launch |
quantum key distribution (qkd)1-3 is a theoretically secure way of sharing secret keys between remote users. it has been demonstrated in a laboratory over a coiled optical fibre up to 404 kilometres long4-7. in the field, point-to-point qkd has been achieved from a satellite to a ground station up to 1,200 kilometres a... | entanglement-based secure quantum cryptography over 1,120 kilometres |
we present an incremental version (4fgl-dr4, for data release 4) of the fourth fermi-lat catalog containing 7194 gamma-ray sources. based on the first 14 years of science data in the energy range from 50 mev to 1 tev, it uses the same analysis methods as the 4fgl-dr3 catalog did for 12 years of data, with only a few im... | fermi large area telescope fourth source catalog data release 4 (4fgl-dr4) |
ixpeobssim is a simulation and analysis framework specifically developed for the imaging x-ray polarimetry explorer (ixpe). given a source model and the response functions of the telescopes, it is designed to produce realistic simulated observations, in the form of event lists in fits format, containing a strict supers... | ixpeobssim: a simulation and analysis framework for the imaging x-ray polarimetry explorer |
here, we present a catalogue of known fast radio burst sources in the form of an online catalogue, frbcat. the catalogue includes information about the instrumentation used for the observations for each detected burst, the measured quantities from each observation, and model-dependent quantities derived from observed q... | frbcat: the fast radio burst catalogue |
the high energy x-ray probe is a proposed nasa probe-class mission that combines the power of high angular resolution with a broad x-ray bandpass to provide the necessary leap in capabilities to address the important astrophysical questions of the next decade. hex-p achieves breakthrough performance by combining techno... | the high energy x-ray probe (hex-p): instrument and mission profile |
the baksan experiment on sterile transitions (best) probes the gallium anomaly and its possible connections to oscillations between active and sterile neutrinos. based on the gallium-germanium neutrino telescope (ggnt) technology of the sage experiment, best employs two zones of liquid ga target to explore neutrino osc... | search for electron-neutrino transitions to sterile states in the best experiment |
in this paper, we describe the optical imaging data processing pipeline developed for the subaru telescope's hyper suprime-cam (hsc) instrument. the hsc pipeline builds on the prototype pipeline being developed by the large synoptic survey telescope's data management system, adding customizations for hsc, large-scale p... | the hyper suprime-cam software pipeline |
we present the first data release of the skymapper southern survey, a hemispheric survey carried out with the skymapper telescope at siding spring observatory in australia. here, we present the survey strategy, data processing, catalogue construction, and database schema. the first data release dataset includes over 66... | skymapper southern survey: first data release (dr1) |
the discovery of a repeating fast radio burst (frb) source1,2, frb 121102, eliminated models involving cataclysmic events for this source. no other repeating frb has hitherto been detected despite many recent discoveries and follow-ups3-5, suggesting that repeaters may be rare in the frb population. here we report the ... | a second source of repeating fast radio bursts |
context. the extreme ultraviolet imager (eui) is part of the remote sensing instrument package of the esa/nasa solar orbiter mission that will explore the inner heliosphere and observe the sun from vantage points close to the sun and out of the ecliptic. solar orbiter will advance the "connection science" between solar... | the solar orbiter eui instrument: the extreme ultraviolet imager |
the near-infrared spectrograph (nirspec) is one of the four focal plane instruments on the james webb space telescope. in this paper, we summarize the in-orbit performance of nirspec, as derived from data collected during its commissioning campaign and the first few months of nominal science operations. more specifical... | in-orbit performance of the near-infrared spectrograph nirspec on the james webb space telescope |
directed and elliptic flows of neutrons and light-charged particles were measured for the reaction 197au+197au at 400 mev/nucleon incident energy within the asy-eos experimental campaign at the gsi laboratory. the detection system consisted of the large area neutron detector (land), combined with parts of the chimera m... | results of the asy-eos experiment at gsi: the symmetry energy at suprasaturation density |
the advanced spaceborne thermal emission and reflection radiometer (aster) is a 14-channel imaging instrument operating on nasa's terra satellite since 1999. aster's visible–near infrared (vnir) instrument, with three bands and a 15 m instantaneous field of view (ifov), is accompanied by an additional band using a seco... | aster global digital elevation model (gdem) and aster global water body dataset (astwbd) |
the international vlbi service for geodesy and astrometry (ivs) regularly produces high-quality earth orientation parameters from observing sessions employing extensive networks or individual baselines. the master schedule is designed according to the telescope days committed by the stations and by the need for dense s... | international vlbi service for geodesy and astrometry. delivering high-quality products and embarking on observations of the next generation |
the canadian hydrogen intensity mapping experiment (chime) is a novel transit radio telescope operating across the 400-800 mhz band. chime is composed of four 20 m × 100 m semicylindrical paraboloid reflectors, each of which has 256 dual-polarization feeds suspended along its axis, giving it a ≳200 deg2 field of view. ... | the chime fast radio burst project: system overview |
the next generation of water cherenkov neutrino telescopes in the mediterranean sea are under construction offshore france (km3net/orca) and sicily (km3net/arca). the km3net/orca detector features an energy detection threshold which allows to collect atmospheric neutrinos to study flavour oscillation. this paper report... | determining the neutrino mass ordering and oscillation parameters with km3net/orca |
the zwicky transient facility (ztf) observing system (os) is the data collector for the ztf project to study astrophysical phenomena in the time domain. ztf os is based upon the 48 inch aperture schmidt-type design samuel oschin telescope at the palomar observatory in southern california. it incorporates new telescope ... | the zwicky transient facility: observing system |
the pan-starrs1 (ps1) science consortium has carried out a set of imaging surveys using the 1.4 gigapixel gpc1 camera on the ps1 telescope. as this camera is composed of many individual electronic readouts and covers a very large field of view, great care was taken to ensure that the many instrumental effects were corr... | pan-starrs pixel processing: detrending, warping, stacking |
we describe the motivation and design details of the `phase ii' upgrade of the murchison widefield array radio telescope. the expansion doubles to 256 the number of antenna tiles deployed in the array. the new antenna tiles enhance the capabilities of the murchison widefield array in several key science areas. seventy-... | the phase ii murchison widefield array: design overview |
we provide an overview of the capabilities and performance of the near-infrared spectrograph (nirspec) on the james webb space telescope when used in its multi-object spectroscopy (mos) mode employing a novel micro shutter array (msa) slit device. the msa consists of four separate 98″ × 91″ quadrants each containing 36... | the near-infrared spectrograph (nirspec) on the james webb space telescope. ii. multi-object spectroscopy (mos) |
from the authors of "how to find the apollo landing sites," this is a guide to connecting the view above with the history of recent scientific discoveries from the hubble space telescope. each selected hst photo is shown with a sky map and a photograph or drawing to illustrate where to find it and how it should appear ... | a guide to hubble space telescope objects: their selection, location, and significance |
the supercam instrument suite provides the mars 2020 rover, perseverance, with a number of versatile remote-sensing techniques that can be used at long distance as well as within the robotic-arm workspace. these include laser-induced breakdown spectroscopy (libs), remote time-resolved raman and luminescence spectroscop... | the supercam instrument suite on the nasa mars 2020 rover: body unit and combined system tests |
the flux-density scale of perley & butler is extended downward to ∼50 mhz by utilizing recent observations with the karl g. jansky very large array (vla) of 20 sources between 220 mhz and 48.1 ghz, and legacy vla observations at 73.8 mhz. the derived spectral flux densities are placed on an absolute scale by utiliz... | an accurate flux density scale from 50 mhz to 50 ghz |
fast radio bursts (frbs) are highly dispersed millisecond-duration radio flashes probably arriving from far outside the milky way1,2. this phenomenon was discovered at radio frequencies near 1.4 gigahertz and so far has been observed in one case3 at as high as 8 gigahertz, but not at below 700 megahertz in spite of sub... | observations of fast radio bursts at frequencies down to 400 megahertz |
we present state-of-the-art predictions for the ultra-high energy (uhe) neutrino-nucleus cross-sections in charged- and neutral-current scattering. the calculation is performed in the framework of collinear factorisation at nnlo, extended to include the resummation of small- x bfkl effects. further improvements are mad... | neutrino telescopes as qcd microscopes |
we report on the first measurement of the astrophysical neutrino flux using particle showers (cascades) in icecube data from 2010-2015. assuming standard oscillations, the astrophysical neutrinos in this dedicated cascade sample are dominated (∼90 %) by electron and tau flavors. the flux, observed in the sensitive ener... | characteristics of the diffuse astrophysical electron and tau neutrino flux with six years of icecube high energy cascade data |
planar digital image sensors facilitate broad applications in a wide range of areas1-5, and the number of pixels has scaled up rapidly in recent years2,6. however, the practical performance of imaging systems is fundamentally limited by spatially nonuniform optical aberrations originating from imperfect lenses or envir... | an integrated imaging sensor for aberration-corrected 3d photography |
desy hamburg operates a test beam facility with three independent beam lines at the desy ii synchrotron. it is world-wide one of very few facilities providing test beams in the gev range. to this end, it offers electron/positron beams with user-selectable momenta from 1-6 gev/c. the available infrastructure for the use... | the desy ii test beam facility |
the large area telescope (lat) aboard the fermi spacecraft routinely observes high-energy emission from gamma-ray bursts (grbs). here we present the second catalog of lat-detected grbs, covering the first 10 yr of operations, from 2008 to 2018 august 4. a total of 186 grbs are found; of these, 91 show emission in the r... | a decade of gamma-ray bursts observed by fermi-lat: the second grb catalog |
aims: the spectrometer telescope for imaging x-rays (stix) on solar orbiter is a hard x-ray imaging spectrometer, which covers the energy range from 4 to 150 kev. stix observes hard x-ray bremsstrahlung emissions from solar flares and therefore provides diagnostics of the hottest (⪆10 mk) flare plasma while quantifying... | the spectrometer/telescope for imaging x-rays (stix) |
we present a catalogue of ∼3000 submillimetre sources detected (≥3.5σ) at 850 μm over ∼5 deg2 surveyed as part of the james clerk maxwell telescope (jcmt) scuba-2 cosmology legacy survey (s2cls). this is the largest survey of its kind at 850 μm, increasing the sample size of 850 μm selected submillimetre galaxies by an... | the scuba-2 cosmology legacy survey: 850 μm maps, catalogues and number counts |
the transiting exoplanet survey satellite (tess) produces full frame images (ffis) at a half hour cadence and keeps the same pointing for ~27 days at a time. astrocut performs the same cutout across all ffis that share a common pointing to create a time series of images on a small portion of the sky. the astrocut packa... | astrocut: tools for creating cutouts of tess images |
we discuss a minimal solution to the long-standing (g - 2) μ anomaly in a simple extension of the standard model with an extra z‧ vector boson that has only flavor off-diagonal couplings to the second and third generation of leptons, i.e. μ , τ ,νμ ,ντ and their antiparticles. a simplified model realization, as well as... | lepton flavor violating z‧ explanation of the muon anomalous magnetic moment |
schlieren and shadowgraph techniques are used around the world for imaging and measuring phenomena in transparent media. these optical methods originated long ago in parallel with telescopes and microscopes, and although it might seem that little new could be expected of them on the timescale of 15 years, in fact sever... | a review of recent developments in schlieren and shadowgraph techniques |
grb 221009a (z = 0.151) is one of the closest known long γ-ray bursts (grbs). its extreme brightness across all electromagnetic wavelengths provides an unprecedented opportunity to study a member of this still-mysterious class of transients in exquisite detail. we present multiwavelength observations of this extraordin... | the radio to gev afterglow of grb 221009a |
neutrino interactions with protons and neutrons probe their deep structure and may reveal new physics. the higher the neutrino energy, the sharper the probe. so far, the neutrino-nucleon (νn) cross section is known across neutrino energies from a few hundred mev to a few pev. soon, ultra-high-energy (uhe) cosmic neutri... | the ultra-high-energy neutrino-nucleon cross section: measurement forecasts for an era of cosmic eev-neutrino discovery |
to date, the burst alert telescope (bat) onboard swift has detected ∼1000 gamma-ray bursts (grbs), of which ∼360 grbs have redshift measurements, ranging from z = 0.03 to z = 9.38. we present the analyses of the bat-detected grbs for the past ∼11 years up through grb 151027b. we report summaries of both the temporal an... | the third swift burst alert telescope gamma-ray burst catalog |
the pacific ocean neutrino experiment is a new initiative towards constructing a multi-cubic-kilometre neutrino telescope to expand our observable window of the universe to the highest energies, and will be installed within the deep pacific ocean underwater infrastructure of ocean networks canada. | the pacific ocean neutrino experiment |
we present tomographic measurements of structure growth using cross-correlations of atacama cosmology telescope (act) dr6 and planck cmb lensing maps with the unwise blue and green galaxy samples, which span the redshift ranges $0.2 \lesssim z \lesssim 1.1$ and $0.3 \lesssim z \lesssim 1.8$, respectively. we improve on... | the atacama cosmology telescope: cosmology from cross-correlations of unwise galaxies and act dr6 cmb lensing |
we study the uv luminosity functions (lfs) at z ∼ 4, 5, 6, and 7 based on the deep large-area optical images taken by the hyper suprime-cam (hsc) subaru strategic program (ssp). on the 100 deg2 sky of the hsc ssp data available to date, we take enormous samples consisting of a total of 579565 dropout candidates at z ∼ ... | great optically luminous dropout research using subaru hsc (goldrush). i. uv luminosity functions at z ∼ 4-7 derived with the half-million dropouts on the 100 deg2 sky |
gravitational lensing by clusters of galaxies offers a powerful probe of their structure and mass distribution. several research groups have developed techniques independently to achieve this goal. while these methods have all provided remarkably high-precision mass maps, particularly with exquisite imaging data from t... | the frontier fields lens modelling comparison project |
we present the calibration of the nuclear spectroscopic telescope array (nustar) x-ray satellite. we used the crab as the primary effective area calibrator and constructed a piece-wise linear spline function to modify the vignetting response. the achieved residuals for all off-axis angles and energies, compared to the ... | calibration of the nustar high-energy focusing x-ray telescope. |
the near-infrared spectrograph (nirspec) on the james webb space telescope (jwst) offers the first opportunity to use integral-field spectroscopy from space at near-infrared wavelengths. more specifically, nirspec's integral-field unit can obtain spectra covering the wavelength range 0.6−5.3 μm for a contiguous 3.1″ × ... | the near-infrared spectrograph (nirspec) on the james webb space telescope. iii. integral-field spectroscopy |
we describe five broad-band filters and a narrow-band one for the hyper suprime-cam (hsc) at the prime focus of the subaru telescope. since the hsc is a practical successor to the suprime-cam (sc), our broad-band filter set follows the sc's sdss g', r', i', z' filters, and y filter, and the hα filter is adopted as our ... | hyper suprime-cam: filters |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.