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692 papers · 1 filter

astro-ph.CO2025

Golden and Silver Dark Sirens for precise H0 measurement with HETDEX

Yixuan Dang, Ish Gupta, Robin Ciardullo +12

Gravitational waves (GWs) from compact binary coalescences are standard sirens that provide a direct measure of the source's luminosity distance, enabling an independent measuremen…

astro-ph.CO2025

Reporting a Deficit of Intrinsic NV Absorbers in Core-dominated, Radio-loud Quasars

Chris Culliton, Amber Roberts, Bryan DeMarcy +5

We searched the Hubble Space Telescope Cosmic Origins Spectrograph archive for ultraviolet spectra of 428 AGN to identify intrinsic NV absorption systems. We filtered out Type 2 AG…

astro-ph.CO2025★ 2 cited

Lyα Intensity Mapping in HETDEX: Galaxy-Lyα Intensity Cross-Power Spectrum

Maja Lujan Niemeyer, Eiichiro Komatsu, José Luis Bernal +18

We present a measurement of the Lyman- (Ly) intensity mapping power spectrum from the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX). We measure the cross-power spect…

astro-ph.CO2025★ 2 cited

Impact of redshift distribution uncertainties on Lyman-break galaxy cosmological parameter inference

Francesco Petri, Boris Leistedt, Daniel J. Mortlock +5

A significant number of Lyman-break galaxies (LBGs) with redshifts 3 < z < 5 are expected to be observed by the upcoming Vera C. Rubin Observatory Legacy Survey of Space and Time (…

astro-ph.CO2025★ 1 cited

Planck isocurvature constraint on primordial black holes lighter than a kiloton

TaeHun Kim, Jinn-Ouk Gong, Donghui Jeong +3

We demonstrate that primordial black holes (PBHs) lighter than , which evaporated before the big bang nucleosynthesis, can induce significant isocurvature perturb…

astro-ph.CO2025★ 3 cited

DESI Spectroscopy of HETDEX Emission-line Candidates I: Line Discrimination Validation

Martin Landriau, Erin Mentuch Cooper, Dustin Davis +50

The Hobby-Eberly Dark Energy Experiment (HETDEX) is an untargeted spectroscopic galaxy survey that uses Ly emitting galaxies (LAEs) as tracers of 1.9 < z < 3.5 large scale struc…

astro-ph.CO2024★ 1 cited

Perturbation Theory Remixed II: Improved Modeling of Nonlinear Bispectrum

Zhenyuan Wang, Donghui Jeong, Atsushi Taruya +2

We present the application of the -th order Eulerian Perturbation Theory (EPT) for modeling the matter bispectrum in real space as an advancement over the Standard Perturbati…

astro-ph.CO2024★ 3 cited

The XMM-SERVS X-ray eXtended Galaxy Cluster (XVXGC) catalog

Weiwei Xu, Linhua Jiang, Ran Li +4

To explain the well-known tension between cosmological parameter constraints obtained from the primary CMB and those drawn from galaxy cluster samples, we propose a possible explan…

astro-ph.CO2024★ 11 cited

pop-cosmos: Scaleable inference of galaxy properties and redshifts with a data-driven population model

Stephen Thorp, Justin Alsing, Hiranya V. Peiris +5

We present an efficient Bayesian method for estimating individual photometric redshifts and galaxy properties under a pre-trained population model (pop-cosmos) that was calibrated…

astro-ph.CO2024

Reevaluating LSST's Capability for Time Delay Measurements in Quasar Accretion Discs

F. Pozo Nuñez, B. Czerny, S. Panda +3

The Legacy Survey of Space and Time (LSST) at the Vera C. Rubin Observatory is poised to observe thousands of quasars using the Deep Drilling Fields (DDF) across six broadband filt…

astro-ph.CO2023★ 4 cited

Reconstructing the Long-wavelength Matter Density Fluctuation Modes from the Scalar-Type Clustering Fossils

Zhenyuan Wang, Donghui Jeong

Revealing the large-scale structure from the 21cm intensity mapping surveys is only possible after the foreground cleaning. However, most current cleaning techniques relying on the…

astro-ph.CO2023★ 3 cited

Zero Metallicity with Zero CPU Hours: Masses of the First Stars on the Laptop

James Gurian, Donghui Jeong, Boyuan Liu

We develop an analytic model for the mass of the first stars forming in the center of primordial gas clouds as a function of host halo mass, redshift, and degree of rotation. The m…

astro-ph.CO2023★ 3 cited

Clusternets: A deep learning approach to probe clustering dark energy

Amirmohammad Chegeni, Farbod Hassani, Alireza Vafaei Sadr +2

Machine Learning (ML) algorithms are becoming popular in cosmology for extracting valuable information from cosmological data. In this paper, we evaluate the performance of a Convo…

astro-ph.CO2023★ 10 cited

The CluMPR Galaxy Cluster-Finding Algorithm and DESI Legacy Survey Galaxy Cluster Catalogue

M. J. Yantovski-Barth, Jeffrey A. Newman, Biprateep Dey +4

Galaxy clusters enable unique opportunities to study cosmology, dark matter, galaxy evolution, and strongly-lensed transients. We here present a new cluster-finding algorithm, CluM…

astro-ph.CO2022★ 38 cited

Beyond CDM constraints from the full shape clustering measurements from BOSS and eBOSS

Agne Semenaite, Ariel G. Sánchez, Andrea Pezzotta +7

We analyse the full shape of anisotropic clustering measurements from the extended Baryon Oscillation Spectroscopic survey (eBOSS) quasar sample together with the combined galaxy s…

astro-ph.CO2022★ 28 cited

Measuring properties of primordial black hole mergers at cosmological distances: effect of higher order modes in gravitational waves

Ken K. Y. Ng, Boris Goncharov, Shiqi Chen +9

Primordial black holes (PBHs) may form from the collapse of matter overdensities shortly after the Big Bang. One may identify their existence by observing gravitational wave (GW) e…

astro-ph.CO2022★ 34 cited

A Lower Bound on the Mass of Compact Objects from Dissipative Dark Matter

James Gurian, Michael Ryan, Sarah Schon +2

We study the minimum mass of dark compact objects formed in dissipative dark-matter halos and show that the simple atomic-dark-matter model consistent with all current observations…

astro-ph.CO2022★ 7 cited

Perturbation Theory Remixed: Improved Nonlinearity Modeling beyond Standard Perturbation Theory

Zhenyuan Wang, Donghui Jeong, Atsushi Taruya +2

We present a novel EPT (th-order Eulerian Perturbation Theory) scheme to model the nonlinear density field by the summation up to th-order density fields in perturbation t…

astro-ph.CO2022★ 31 cited

Forward modeling of galaxy populations for cosmological redshift distribution inference

Justin Alsing, Hiranya Peiris, Daniel Mortlock +2

We present a forward modeling framework for estimating galaxy redshift distributions from photometric surveys. Our forward model is composed of: a detailed population model describ…

astro-ph.CO2022★ 10 cited

Metal Lines Associated with the Lyman-alpha Forest from eBOSS Data

Li Yang, Zheng Zheng, Hélion du Mas des Bourboux +5

We investigate the metal species associated with the Ly forest in the eBOSS quasar spectra. Metal absorption lines are revealed in the stacked spectra from cross-correlating the…

astro-ph.CO2022★ 10 cited

Results on photon-mediated dark matter-nucleus interactions from the PICO-60 CF bubble chamber

B. Ali, I. J. Arnquist, D. Baxter +52

Many compelling models predict dark matter coupling to the electromagnetic current through higher multipole interactions, while remaining electrically neutral. Different multipole…

astro-ph.CO2022★ 17 cited

Combined full shape analysis of BOSS galaxies and eBOSS quasars using an iterative emulator

Richard Neveux, Etienne Burtin, Vanina Ruhlmann-Kleider +8

Standard full-shape clustering analyses in Fourier space rely on a fixed power spectrum template, defined at the fiducial cosmology used to convert redshifts into distances, and co…

astro-ph.CO2022★ 9 cited

Fast and Flexible Analysis of Direct Dark Matter Search Data with Machine Learning

LUX Collaboration, D. S. Akerib, S. Alsum +97

We present the results from combining machine learning with the profile likelihood fit procedure, using data from the Large Underground Xenon (LUX) dark matter experiment. This app…

astro-ph.CO2021★ 247 cited

Constraints on the cosmic expansion history from GWTC-3

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1676

We use 47 gravitational-wave sources from the Third LIGO-Virgo-KAGRA Gravitational-Wave Transient Catalog (GWTC-3) to estimate the Hubble parameter , including its current va…