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Type 2 Active Galactic Nuclei with Double-Peaked [OIII] Lines. II.
Single AGNs with Complex Narrow-Line Region Kinematics are More Common than
Binary AGNs: (Abridged) Approximately 1% of low redshift (z<0.3) optically-selected type 2
AGNs show a double-peaked [OIII] narrow emission line profile in their
spatially-i... | astro-ph_CO |
Confronting predictions of the galaxy stellar mass function with
observations at high-redshift: We investigate the evolution of the galaxy stellar mass function at
high-redshift ($z\ge 5$) using a pair of large cosmological hydrodynamical
simulations: {\em MassiveBlack} and {\em MassiveBlack-II}. By combining these
s... | astro-ph_CO |
Testing Parity Symmetry with the Polarized Cosmic Microwave Background: New physics in the early Universe could lead to parity-violation in the late
Universe, sourcing statistics whose sign changes under point reflection. The
best constraints on such phenomena have come from the Planck temperature
fluctuations; however... | astro-ph_CO |
Pushing the Limits of Detectability: Mixed Dark Matter from Strong
Gravitational Lenses: One of the frontiers for advancing what is known about dark matter lies in
using strong gravitational lenses to characterize the population of the
smallest dark matter halos. There is a large volume of information in strong
gravi... | astro-ph_CO |
Shadows of trans-planckian physics on cosmology and the role of the
zero-point energy density: We consider the role of the zero-point energy of a quantum field in cosmology
and show that the flow of trans-planckian momenta due to redshift acts as a
source for this energy, regularized with a cut-off Lambda in physical... | astro-ph_CO |
Scale-dependent power spectrum from initial excited-de Sitter modes: In this paper, we calculate corrections of scalar perturbations spectra
resulting from excited-de Sitter modes as the nontrivial initial states. To
obtain these modes, we consider the asymptotic expansion of the Hankel
functions up to the higher order... | astro-ph_CO |
T-RaMiSu: The Two-meter Radio Mini Survey I. The Bootes Field: We present wide area, deep, high-resolution 153 MHz GMRT observations of the
NOAO Bootes field, adding to the extensive, multi-wavelength data of this
region. The observations, data reduction, and catalogue construction and
description are described here. T... | astro-ph_CO |
Deep LBT/LUCI Spectroscopy of a Lyman-alpha Emitter Candidate at z ~ 7.7: We present deep spectroscopic observations of a Lyman-alpha emitter (LAE)
candidate at z ~ 7.7 using the infrared spectrograph LUCI on the 2 x 8.4m Large
Binocular Telescope (LBT). The candidate is the brightest among the four z ~
7.7 LAE candida... | astro-ph_CO |
Directional detection of Dark Matter: Directional detection of galactic Dark Matter is a promising search strategy
for discriminating genuine WIMP events from background ones. However, to take
full advantage of this powerful detection method, one need to be able to
extract information from an observed recoil map to ide... | astro-ph_CO |
Evolution of Galaxy Stellar Mass Functions, Mass Densities, and Mass to
Light Ratios from z 7 to z 4: We derive stellar masses from SED fitting to rest-frame optical and UV fluxes
for 401 star-forming galaxies at z 4, 5, and 6 from Hubble-WFC3/IR observations
of the ERS combined with the deep GOODS-S Spitzer/IRAC dat... | astro-ph_CO |
Decoding the bispectrum of single-field inflation: Galileon fields arise naturally from the decoupling limit of massive
gravities, and possess special self-interactions which are protected by a
spacetime generalization of Galilean symmetry. We briefly revisit the
inflationary phenomenology of Galileon theories. Working... | astro-ph_CO |
BSG alignment of SDSS galaxy groups: We study the alignment signal between the distribution of brightest satellite
galaxies (BSGs) and the major axis of their host groups using SDSS group
catalog constructed by Yang et al. (2007). After correcting for the effect of
group ellipticity, a statistically significant (~ 5\si... | astro-ph_CO |
An indirect measurement of gas evolution in galaxies at $0.5\leq z \leq
2.0$: One key piece of information missing from high redshift galaxy surveys is the
galaxies' cold gas contents. We present a new method to indirectly determine
cold gas surface densities and integrated gas masses from galaxy star formation
rates... | astro-ph_CO |
Spacetime variation of $α$ and the CMB power spectra after the
recombination: The possible variation of the fine structure constant may be due to the
non-minimal coupling of the electromagnetic field to a light scalar field which
can be the candidate of dark energy. Its dynamical nature renders the fine
structure con... | astro-ph_CO |
The first bent double lobe radio source in a known cluster filament:
Constraints on the intra-filament medium: We announce the first discovery of a bent double lobe radio source (DLRS) in
a known cluster filament. The bent DLRS is found at a distance of 3.4 Mpc from
the center of the rich galaxy cluster, Abell~1763. ... | astro-ph_CO |
Orbital evolution of the Carina dwarf galaxy and self-consistent star
formation history determination: We present a new study of the evolution of the Carina dwarf galaxy that
includes a simultaneous derivation of its orbit and star formation history. The
structure of the galaxy is constrained through orbital paramete... | astro-ph_CO |
Constraints on a mixed model of dark matter particles and primordial
black holes from the Galactic 511 keV line: The galactic 511 keV gamma-ray line has been observed since 1970's, and was
identified as the result of electron-positron annihilation, but the origin of
such positrons is still not clear. Apart from the a... | astro-ph_CO |
Warm Molecular Hydrogen Emission in Normal Edge-On Galaxies NGC 4565 and
NGC 5907: We have observed warm molecular hydrogen in two nearby edge-on disk galaxies,
NGC 4565 and NGC 5907, using the Spitzer high-resolution infrared spectrograph.
The 0-0 S(0) 28.2 micron and 0-0 S(1) 17.0 micron pure rotational lines were
... | astro-ph_CO |
Cross-correlation of the HI 21-cm Signal and Lyman-alpha Forest: A Probe
Of Cosmology: Separating the cosmological redshifted 21-cm signal from foregrounds is a
major challenge. We present the cross-correlation of the redshifted 21-cm
emission from neutral hydrogen (HI) in the post-reionization era with the
Ly-alpha ... | astro-ph_CO |
A Massive, Cooling-Flow-Induced Starburst in the Core of a Highly
Luminous Galaxy Cluster: In the cores of some galaxy clusters the hot intracluster plasma is dense
enough that it should cool radiatively in the cluster's lifetime, leading to
continuous "cooling flows" of gas sinking towards the cluster center, yet no... | astro-ph_CO |
Integral field spectroscopy of a sample of nearby galaxies: II.
Properties of the H ii regions: In this work we analyze the spectroscopic properties of a large number of H
ii regions, \sim2600, located in 38 galaxies. The sample of galaxies has been
assembled from the face-on spirals in the PINGS survey and a sample ... | astro-ph_CO |
Compact molecular disc and ionized gas outflows within 350 pc of the
active nucleus of Mrk 1066: We present stellar and gaseous kinematics of the inner 350 pc radius of the
Seyfert galaxy Mrk1066 derived from J and Kl bands data obtained with the
Gemini NIFS at a spatial resolution of 35 pc. The stellar velocity fiel... | astro-ph_CO |
Galaxy Cluster Science with the Sunyaev-Zel'dovich Effect: Studying galaxy clusters through their Sunyaev-Zel'dovich (SZ) imprint on the
Cosmic Microwave Background has many important advantages. The total SZ signal
is an accurate and precise tracer of the total pressure in the intra-cluster
medium and of cluster mass,... | astro-ph_CO |
Scalar-tensor theories of gravity, neutrino physics, and the $H_0$
tension: We use $Planck$ 2018 data to constrain the simplest models of scalar-tensor
theories characterized by a coupling to the Ricci scalar of the type $F(\sigma)
R$ with $F(\sigma) = N_{pl}^2 + \xi \sigma^2$. We update our results with
previous $Pl... | astro-ph_CO |
The pre-launch Planck Sky Model: a model of sky emission at
submillimetre to centimetre wavelengths: We present the Planck Sky Model (PSM), a parametric model for the generation
of all-sky, few arcminute resolution maps of sky emission at submillimetre to
centimetre wavelengths, in both intensity and polarisation. Se... | astro-ph_CO |
Constraint on $f(R)$ Gravity through the Redshift Space Distortion: In this paper, a specific family of $f(R)$ models that can produce the
$\Lambda$CDM background expansion history is constrained by using the currently
available geometric and dynamic probes. The scale dependence of the growth rate
$f(z,k)$ in this spec... | astro-ph_CO |
Does the Corona Borealis Supercluster form a giant binary-like system?: The distribution of local gravitational potentials generated by a complete
volume-limited sample of galaxy groups and clusters filling the Corona Borealis
region has been derived to search for new gravitational hints in the context of
clus-tering a... | astro-ph_CO |
Projected two- and three-point statistics: Forecasts and mitigation of
non-linear RSDs: The combination of two- and three-point clustering statistics of galaxies and
the underlying matter distribution has the potential to break degeneracies
between cosmological parameters and nuisance parameters and can lead to
signi... | astro-ph_CO |
Probing the Intermediate-Age Globular Clusters in NGC 5128 from
Ultraviolet Observations: We explore the age distribution of the globular cluster (GC) system of the
nearby elliptical galaxy NGC 5128 using ultraviolet (UV) photometry from Galaxy
Evolution Explorer (GALEX) observations, with UV - optical colors used as... | astro-ph_CO |
The investigations of anisotropy in orientations of galaxies: In 1994 Parnovsky, Karachentsev and Karachentseva suggested a modified method
for investigation of the orientations of galaxies. Using this method they
analyzed galaxies from the UGC and ESO catalogues, as well as from their's own
catalogue inclusive of flat... | astro-ph_CO |
Revisit of constraints on holographic dark energy: SNLS3 dataset with
the effects of time-varying $β$ and different light-curve fitters: Previous studies have shown that for the Supernova Legacy Survey three-year
(SNLS3) data there is strong evidence for the redshift-evolution of
color-luminosity parameter $\beta$ of... | astro-ph_CO |
The role of multiple images and model priors in measuring $H_0$ from
supernova Refsdal in galaxy cluster MACS J1149.5+2223: Multiple image gravitational lensing systems with measured time delays
provide a promising one-step method for determining $H_0$. MACS J1149, which
lenses SN Refsdal into a quad S1-S4, and two o... | astro-ph_CO |
Constraint on the minimally extended varying speed of light using time
dilations in type Ia supernovae: The Friedmann-Lema\^{i}tre-Robertson-Walker model establishes the correlation
between redshifts and distances. It has a metric expansion of space. As a
result, the wavelength of photons propagating through the expa... | astro-ph_CO |
The Absolute Magnitudes of Type Ia Supernovae in the Ultraviolet: We examine the absolute magnitudes and light-curve shapes of 14
nearby(redshift z = 0.004--0.027) Type Ia supernovae (SNe~Ia) observed in the
ultraviolet (UV) with the Swift Ultraviolet/Optical Telescope. Colors and
absolute magnitudes are calculated usi... | astro-ph_CO |
VERITAS Observations of the BL Lac Object PG 1553+113 Between May 2010
and May 2011: VERITAS, an array of imaging atmospheric-Cherenkov telescopes, studies
blazars in the energy range between ~100 GeV and ~30 TeV. With its excellent
sensitivity at these energies, and ever-deepening source exposures, VERITAS is
in a p... | astro-ph_CO |
Quintessence's Last Stand?: Current cosmological data puts increasing pressure on models of dark energy
in the freezing class, e.g. early dark energy or those with equation of state
$w$ substantially different from $-1$. We investigate to what extent data will
distinguish the thawing class of quintessence from a cosmol... | astro-ph_CO |
SDSS superclusters: morphology and galaxy content: We compare the galaxy populations in superclusters of different morphology in
the nearby Universe (180 < d < 270 Mpc) to see whether the inner structure and
overall morphology of superclusters are important in shaping galaxy properties
in superclusters. Supercluster mo... | astro-ph_CO |
A "Light," Centrally-Concentrated Milky Way Halo?: We discuss a novel approach to "weighing" the Milky Way dark matter halo, one
that combines the latest samples of halo stars selected from the Sloan Digital
Sky Survey (SDSS) with state-of-the-art numerical simulations of Milky Way
analogs. The fully cosmological runs ... | astro-ph_CO |
Separating E and B types of polarization on an incomplete sky: Detection of magnetic-type ($B$-type) polarization in the Cosmic Microwave
Background (CMB) radiation plays a crucial role in probing the relic
gravitational wave (RGW) background. In this paper, we propose a new method to
deconstruct a polarization map on ... | astro-ph_CO |
Exact Results for Propagators in the Geometrical Adhesion Model: The Geometrical Adhesion Model (GAM) we described in previous papers provides
a fully solved model for the nonlinear evolution of fields that mimic the
cosmological evolution of pressureless fluids. In this context we explore the
expected late time proper... | astro-ph_CO |
The central dark matter distribution of NGC 2976: We study the mass distribution in the late-type dwarf galaxy NGC 2976 through
stellar kinematics obtained with the VIRUS-P integral-field spectrograph and
anisotropic Jeans models as a test of cosmological simulations and baryonic
processes that putatively alter small-s... | astro-ph_CO |
Impact of half-wave plate systematics on the measurement of CMB $B$-mode
polarization: Polarization of the cosmic microwave background (CMB) can help probe the
fundamental physics behind cosmic inflation via the measurement of primordial
$B$ modes. As this requires exquisite control over instrumental systematics,
som... | astro-ph_CO |
First star formation in ultra-light particle dark matter cosmology: The formation of the first stars in the high-redshift Universe is a sensitive
probe of the small-scale, particle physics nature of dark matter (DM). We carry
out cosmological simulations of primordial star formation in ultra-light,
axion-like particle ... | astro-ph_CO |
Star Formation Timescales and the Schmidt Law: We offer a simple parameterization of the rate of star formation in galaxies.
In this new approach, we make explicit and decouple the timescales associated
(a) with disruptive effects the star formation event itself, from (b) the
timescales associated with the cloud assemb... | astro-ph_CO |
Convergence and shear statistics in galaxy clusters as a result of Monte
Carlo simulations: In this paper the influence of galaxy cluster halo environment on the
deflection properties of its galaxies is investigated. For this purpose
circular and elliptical projected cluster haloes obeying Einasto density
profiles ar... | astro-ph_CO |
Birth of the first stars amidst decaying and annihilating dark matter: The first stars are expected to form through molecular-hydrogen (H$_2$)
cooling, a channel that is especially sensitive to the thermal and ionization
state of gas, and can thus act as a probe of exotic energy injection from
decaying or annihilating ... | astro-ph_CO |
The density profiles of Dark Matter halos in Spiral Galaxies: In spiral galaxies, we explain their non-Keplerian rotation curves (RCs) by
means of a non-luminous component embedding their stellar-gaseous disks.
Understanding the detailed properties of this component (labelled Dark Matter,
DM) is one of the most pressin... | astro-ph_CO |
Formation times, mass growth histories and concentrations of dark matter
haloes: We develop a simple model for estimating the mass growth histories of dark
matter halos. The model is based on a fit to the formation time distribution,
where formation is defined as the earliest time that the main branch of the
merger t... | astro-ph_CO |
Polynomial inflation models after BICEP2: Large field inflation models are favored by the recent BICEP2 that has
detected gravitational wave modes generated during inflation. We study general
large field inflation models for which the potential contains (constant)
quadratic and quartic terms of inflaton field. We show,... | astro-ph_CO |
Anisotropic correlation functions as tracers of central galaxy
alignments in simulations: Motivated by observational results, we use IllustrisTNG hydrodynamical
numerical simulations to study the alignment of the central galaxies in groups
with the surrounding structures. This approach allows us to analyse galaxy and... | astro-ph_CO |
GUT-Scale Primordial Black Holes: Mergers and Gravitational Waves: Tight constraints on the abundance of primordial black holes can be deduced
across a vast range of masses, with the exception of those light enough to
fully evaporate before nucleosynthesis. This hypothetical population is almost
entirely unconstrained,... | astro-ph_CO |
Hubble tensions: a historical statistical analysis: Statistical analyses of the measurements of the Hubble-Lema\^itre constant
$H_0$ (163 measurements between 1976 and 2019) show that the statistical error
bars associated with the observed parameter measurements have been
underestimated -- or the systematic errors were... | astro-ph_CO |
Non-parametric study of the evolution of the cosmological equation of
state with SNeIa, BAO and high redshift GRBs: We study the dark energy equation of state as a function of redshift in a
non-parametric way, without imposing any {\it a priori} $w(z)$ (ratio of
pressure over energy density) functional form. As a che... | astro-ph_CO |
Color Differences between Clockwise and Counterclockwise Spiral Galaxies: While spiral galaxies observed from Earth clearly seem to spin in different
directions, little is yet known about other differences between galaxies that
spin clockwise and galaxies that spin counterclockwise. Here we compared the
color of 64,399... | astro-ph_CO |
A bias to CMB lensing measurements from the bispectrum of large-scale
structure: The rapidly improving precision of measurements of gravitational lensing of
the Cosmic Microwave Background (CMB) also requires a corresponding increase in
the precision of theoretical modeling. A commonly made approximation is to
model ... | astro-ph_CO |
Constraining the Statistics of Population III Binaries: We perform a cosmological simulation in order to model the growth and
evolution of Population III (Pop III) stellar systems in a range of host
minihalo environments. A Pop III multiple system forms in each of the ten
minihaloes, and the overall mass function is to... | astro-ph_CO |
Evolution of Quiescent and Star-Forming Galaxies Since z~1.5 as a
Function of Their Velocity Dispersions: We measure stellar masses and structural parameters for 5,500 quiescent and
20,000 star-forming galaxies at 0.3<z\leq1.5 in the Newfirm Medium Band Survey
COSMOS and UKIDSS UDS fields. We combine these measuremen... | astro-ph_CO |
Inflation and Early Dark Energy with a Stage II Hydrogen Intensity
Mapping Experiment: This white paper envisions a revolutionary post-DESI, post-LSST dark energy
program based on intensity mapping of the redshifted 21cm emission line from
neutral hydrogen at radio frequencies. The proposed intensity mapping survey
h... | astro-ph_CO |
Real or Interloper? The Redshift Likelihoods of z>8 Galaxies in the
HUDF12: In the absence of spectra, fitting template model spectra to observed
photometric fluxes, known as Spectral Energy Distribution (SED) fitting, has
become the workhorse for identifying high-z galaxies. In this paper, we present
an analysis of ... | astro-ph_CO |
Probing High-Column Outflows in BALQSOs Using Metastable Helium: Outflows are believed to be ubiquitous and fundamentally important in active
galaxies. Despite their importance, key physical properties of outflows remain
poorly unconstrained; this severely limits study of the acceleration process.
It is especially diff... | astro-ph_CO |
Clustering properties of galaxies selected in stellar mass: Breaking
down the link between luminous and dark matter in massive galaxies from z=0
to z=2: We present a study on the clustering of a stellar mass selected sample of
18,482 galaxies with stellar masses M*>10^10M(sun) at redshifts 0.4<z<2.0,
taken from the... | astro-ph_CO |
The evolution of the rest-frame J- and H-band luminosity function of
galaxies to z=3.5: We present the rest-frame J- and H-band luminosity function (LF) of field
galaxies, based on a deep multi-wavelength composite sample from the MUSYC,
FIRES and FIREWORKS survey public catalogues, covering a total area of 450
arcmi... | astro-ph_CO |
Thawing models in the presence of a generalized Chaplygin gas: In this paper we consider a cosmological model whose main components are a
scalar field and a generalized Chaplygin gas. We obtain an exact solution for a
flat arbitrary potential. This solution have the right dust limit when the
Chaplygin parameter $A\righ... | astro-ph_CO |
Scaling Laws in High-Energy Inverse Compton Scattering: Based upon the rate equations for the photon distribution function obtained
in the previous paper, we study the inverse Compton scattering process for
high-energy nonthermal electrons. Assuming the power-law electron distribution,
we find a scaling law in the prob... | astro-ph_CO |
Lyman Alpha Emitters at z=7 in the Subaru/XMM-Newton Deep Survey Field:
Photometric Candidates and Luminosity Function: We conducted a deep narrowband NB973 (FWHM = 200 A centered at 9755 A) survey
of z=7 Lyman alpha emitters (LAEs) in the Subaru/XMM-Newton Deep Survey Field,
using the fully depleted CCDs newly insta... | astro-ph_CO |
Constraining warm dark matter with 21 cm line fluctuations due to
minihalos: Warm dark matter (WDM) with mass m_WDM = O(1) keV has long been discussed as
a promising solution for discrepancies between cosmic structures observed at
small scales and predications of the concordance CDM model. Though several
cosmological... | astro-ph_CO |
Baryon acoustic oscillations with the cross-correlation of spectroscopic
and photometric samples: The baryon acoustic oscillation (BAO) experiment requires a sufficiently
dense sampling of large-scale structure tracers with spectroscopic redshift,
which is observationally expensive especially at high redshifts $z\sim... | astro-ph_CO |
The Mass-Metallicity relation explored with CALIFA: I. Is there a
dependence on the star formation rate?: We present the results on the study of the global and local M-Z relation
based on the first data available from the CALIFA survey (150 galaxies). This
survey provides integral field spectroscopy of the complete o... | astro-ph_CO |
A Geometric Probe of Cosmology: I. Gravitational Lensing Time Delays and
Quasar Reverberation Mapping: We present a novel, purely geometric probe of cosmology based on measurements
of differential time delays between images of strongly lensed quasars due to
finite source effects. Our approach is solely dependent on c... | astro-ph_CO |
Dust in the Early (z>1) Universe: Although dust emission at cosmological distances has only been detected a
little more than a decade ago, remarkable progress has been achieved since then
in characterizing the far-infrared emission of high-redshift systems. The mere
fact that dust can be detected in galaxies at high re... | astro-ph_CO |
How closely do baryons follow dark matter on large scales?: We investigate the large-scale clustering and gravitational interaction of
baryons and dark matter (DM) over cosmic time using a set of collisionless
N-body simulations. Both components, baryons and DM, are evolved from distinct
primordial density and velocity... | astro-ph_CO |
The connection between radio halos and cluster mergers and the
statistical properties of the radio halo population: We discuss the statistical properties of the radio halo population in galaxy
clusters. Radio bi-modality is observed in galaxy clusters: a fraction of
clusters host giant radio halos while the majority ... | astro-ph_CO |
Pushing the Limits of Detectability: Mixed Dark Matter from Strong
Gravitational Lenses: One of the frontiers for advancing what is known about dark matter lies in
using strong gravitational lenses to characterize the population of the
smallest dark matter halos. There is a large volume of information in strong
gravi... | astro-ph_CO |
Heating Galaxy Clusters with Interacting Dark Matter: The overcooling of cool core clusters is a persistent puzzle in the
astrophysics of galaxy clusters. We propose that it may naturally be resolved
via interactions between the baryons of the intracluster medium (ICM) and its
dark matter (DM). DM-baryon interactions c... | astro-ph_CO |
Precision cosmology from large-scale structure of the Universe: Large scale structure of the Universe becomes a leading source of precision
cosmological information. We present two particular tools that can be used in
cosmological analyses of the redshift space galaxy clustering data: a new
open-source code CLASS-PT an... | astro-ph_CO |
Interacting dark matter and cosmic acceleration: We study the effect of an explicit interaction between two scalar fields
components describing dark matter in the context of a recent proposal framework
for interaction. We find that, even assuming a very small coupling, it is
sufficient to explain the observational effe... | astro-ph_CO |
Simulation of Primordial Black Holes with large negative non-Gaussianity: In this work, we have performed numerical simulations of primordial black
hole (PBH) formation in the Friedman-Lema\^itre-Robertson-Walker universe
filled by radiation fluid, introducing the local-type non-Gaussianity to the
primordial curvature ... | astro-ph_CO |
Radio Detection of Green Peas: Implications for Magnetic Fields in Young
Galaxies: Green Peas are a new class of young, emission line galaxies that were
discovered by citizen volunteers in the Galaxy Zoo project. Their low stellar
mass, low metallicity and very high star formation rates make Green Peas the
nearby (z~... | astro-ph_CO |
Reheating constraints and consistency relations of the Starobinsky model
and some of its generalizations: Building on the success of the Starobinsky model in describing the
inflationary period of the universe, we investigate two simple generalizations
of this model and their constraints imposed by the reheating epoch... | astro-ph_CO |
Constraining axion inflation with gravitational waves from preheating: We study gravitational wave production from gauge preheating in a variety of
inflationary models, detailing its dependence on both the energy scale and the
shape of the potential. We show that preheating into Abelian gauge fields
generically leads t... | astro-ph_CO |
Determination of dark matter type by X-ray sources statistics: The current cosmological model includes cold dark matter, which consists of
massive nonrelativistic particles. There are also some observational and
theoretical evidences for warm dark matter. The existence of warm DM can be
examined by measuring of the gal... | astro-ph_CO |
Cosmology and neutrino mass with the Minimum Spanning Tree: The information content of the minimum spanning tree (MST), used to capture
higher-order statistics and information from the cosmic web, is compared to
that of the power spectrum for a $\nu\Lambda$CDM model. The measurements are
made in redshift space using ha... | astro-ph_CO |
Weak lensing magnification in the Dark Energy Survey Science
Verification Data: In this paper the effect of weak lensing magnification on galaxy number
counts is studied by cross-correlating the positions of two galaxy samples,
separated by redshift, using data from the Dark Energy Survey Science
Verification dataset... | astro-ph_CO |
The Effects of Local Primordial Non-Gaussianity on the Formation and
Evolution of Galaxies: Thanks to the rapid progress in precision cosmology in the last few years, we
now have access to physical observables that may constrain the theory of
inflation through the non-Gaussianity (NG) signatures in the cosmic microwa... | astro-ph_CO |
Multiscale cosmology and structure-emerging Dark Energy: A plausibility
analysis: Cosmological backreaction suggests a link between structure formation and the
expansion history of the Universe. In order to quantitatively examine this
connection, we dynamically investigate a volume partition of the Universe into
over... | astro-ph_CO |
Primordial Black Hole Formation during a Strongly Coupled Crossover: The final mass distribution of primordial black holes is sensitive to the
equation of state of the Universe at the scales accessible by the power
spectrum. Motivated by the presence of phase transitions in several beyond the
Standard Model theories, s... | astro-ph_CO |
Tracking the orbit of unresolved subhalos for semi-analytic models: We present a model to track the orbital evolution of "unresolved subhaloes"
(USHs) in cosmological simulations. USHs are subhaloes that are no longer
distinguished by halo finders as self-bound overdensities within their larger
host system due to limit... | astro-ph_CO |
CMB at small scales: Cosmology from tSZ power spectrum: Small scale CMB angular power spectrum contains not only primordial CMB
information but also many contaminants coming from secondary anisotropies. Most
of the latter depend on the cosmological model but are often marginalised over.
We propose a new analysis of the... | astro-ph_CO |
The QUIJOTE experiment: project overview and first results: QUIJOTE (Q-U-I JOint TEnerife) is a new polarimeter aimed to characterize the
polarization of the Cosmic Microwave Background and other Galactic and
extragalactic signals at medium and large angular scales in the frequency range
10-40 GHz. The multi-frequency ... | astro-ph_CO |
Quasar Structure Emerges from the Three Forms of Radiation Pressure: All quasar spectra show the same atomic features in the optical, UV, near-IR
and soft X-rays over all of cosmic time, luminosity black hole mass and
accretion rate. This is a puzzle. Here I show that it is possible that all of
these atomic features ca... | astro-ph_CO |
First study of reionization in tilted flat and untilted non-flat
dynamical dark energy inflation models: We examine the effects of dark energy dynamics and spatial curvature on
cosmic reionization by studying reionization in tilted spatially-flat and
untilted non-flat XCDM and $\phi$CDM dynamical dark energy inflatio... | astro-ph_CO |
Differential Observation Techniques for the SZE-21cm and radio sources: The SZE-21cm has been proposed as an alternative probe for the Dark Ages (DA)
and the Epoch of Reionization (EoR). The effect is produced when photons of the
21cm background are inverse Compton (up-)scattered by electrons residing in hot
plasma of ... | astro-ph_CO |
Constraining Big Bang lithium production with recent solar neutrino data: The 3He({\alpha},{\gamma})7Be reaction affects not only the production of 7Li
in Big Bang nucleosynthesis, but also the fluxes of 7Be and 8B neutrinos from
the Sun. This double role is exploited here to constrain the former by the
latter. A numbe... | astro-ph_CO |
Creation of cosmic structure in the complex galaxy cluster merger Abell
2744: We present a detailed strong lensing, weak lensing and X-ray analysis of
Abell 2744 (z = 0.308), one of the most actively merging galaxy clusters known.
It appears to have unleashed `dark', `ghost', `bullet' and `stripped'
substructures, ea... | astro-ph_CO |
Non-parametric modeling of the intra-cluster gas using APEX-SZ bolometer
imaging data: We demonstrate the usability of mm-wavelength imaging data obtained from the
APEX-SZ bolometer array to derive the radial temperature profile of the hot
intra-cluster gas out to radius r_500 and beyond. The goal is to study the
phy... | astro-ph_CO |
Do Cosmological Perturbations Have Zero Mean?: A central assumption in our analysis of cosmic structure is that cosmological
perturbations have zero ensemble mean. This property is one of the consequences
of statistically homogeneity, the invariance of correlation functions under
spatial translations. In this article w... | astro-ph_CO |
The WIRCAM Deep Infrared Cluster Survey I: Groups and Clusters at z >
1.1: We use CFHTLS deep optical data, WIRCam Deep Survey (WIRDS) NIR data and XMM
data to identify z>1.1 clusters in the CFHTLS D1 and D4 fields. Counterparts to
such clusters can not be identified without deep NIR data and as such the total
of =1d... | astro-ph_CO |
The age-redshift relation for Luminous Red Galaxies in the Sloan Digital
Sky Survey: We present a detailed analysis of 17,852 quiescent, Luminous Red Galaxies
(LRGs) selected from Sloan Digital Sky Survey (SDSS) Data Release Seven (DR7)
spanning a redshift range of 0.0 < z < 0.4. These galaxies are co-added into
four... | astro-ph_CO |
The extended HI halo of NGC 4945 as seen by MeerKAT: Observations of the neutral atomic hydrogen (HI) in the nuclear starburst
galaxy NGC 4945 with MeerKAT are presented. We find a large amount of halo gas,
previously missed by HI observations, accounting for 6.8% of the total HI mass.
This is most likely gas blown int... | astro-ph_CO |
Mass and metal ejection efficiency in disk galaxies driven by young
stellar clusters of nuclear starburst: We present results from models of galactic winds driven by energy injected by
nuclear starbursts. The total energy of the starburst is provided by young
central stellar clusters and parts of the galactic interst... | astro-ph_CO |
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