Showing 2024 · astro-ph.COShow all

11 papers · 2 filters

astro-ph.CO2024★ 3 cited

Strong gravitational lensing with upcoming wide-field radio surveys

Samuel McCarty, Liam Connor

The number of strong lensing systems will soon increase by orders of magnitude thanks to sensitive, wide-field optical and infrared imaging surveys such as Euclid, Rubin-LSST, and…

astro-ph.CO2024★ 1 cited

A semi-analytic estimate for the effective sound speed counterterm in the EFTofLSS

Caio Nascimento, Drew Jamieson, Matthew McQuinn +1

The Effective Field Theory of Large Scale Structure (EFTofLSS) has found tremendous success as a perturbative framework for the evolution of large scale structure, and it is now ro…

astro-ph.CO2024★ 69 cited

Massive neutrinos and cosmic composition

Marilena Loverde, Zachary J. Weiner

Cosmological data probe massive neutrinos via their effects on the geometry of the Universe and the growth of structure, both of which are degenerate with the late-time expansion h…

astro-ph.CO2024★ 1 cited

GalaxiesML: a dataset of galaxy images, photometry, redshifts, and structural parameters for machine learning

Tuan Do, Bernie Boscoe, Evan Jones +2

We present a dataset built for machine learning applications consisting of galaxy photometry, images, spectroscopic redshifts, and structural properties. This dataset comprises 286…

astro-ph.CO2024★ 14 cited

ZTF SN Ia DR2: Study of Type Ia Supernova lightcurve fits

M. Rigault, M. Smith, N. Regnault +34

Type Ia supernova (SN Ia) cosmology relies on the estimation of lightcurve parameters to derive precision distances that leads to the estimation of cosmological parameters. The emp…

astro-ph.CO2024★ 19 cited

ZTF SN Ia DR2: Environmental dependencies of stretch and luminosity of a volume limited sample of 1,000 Type Ia Supernovae

M. Ginolin, M. Rigault, M. Smith +43

To get distances, Type Ia Supernovae magnitudes are corrected for their correlation with lightcurve width and colour. Here we investigate how this standardisation is affected by th…

astro-ph.CO2024★ 40 cited

Cosmology with varying fundamental constants from hyperlight, coupled scalars

Masha Baryakhtar, Olivier Simon, Zachary J. Weiner

The fundamental constants at recombination can differ from their present-day values due to degeneracies in cosmological parameters, raising the possibility of yet-undiscovered phys…

astro-ph.CO2024★ 26 cited

Imprints of Supermassive Black Hole Evolution on the Spectral and Spatial Anisotropy of Nano-Hertz Stochastic Gravitational-Wave Background

Mohit Raj Sah, Suvodip Mukherjee, Vida Saeedzadeh +3

The formation and evolution of supermassive black holes (SMBHs) remains an open question in the field of modern cosmology. The detection of nanohertz (n-Hz) gravitational waves via…

astro-ph.CO2024★ 5 cited

The Quasar Catalogue for S-PLUS DR4 (QuCatS) and the estimation of photometric redshifts

L. Nakazono, R. R. Valença, G. Soares +12

The advent of massive broad-band photometric surveys enabled photometric redshift estimates for unprecedented numbers of galaxies and quasars. These estimates can be improved using…

astro-ph.CO2024★ 23 cited

Detecting Dark Matter Substructures on Small Scales with Fast Radio Bursts

Huangyu Xiao, Liang Dai, Matthew McQuinn

We propose measuring the arrival time difference of Fast Radio Bursts (FRBs) along two adjacent sightlines as a new probe to dark matter substructures on scales down to A…

astro-ph.CO2024★ 37 cited

The Dark Energy Survey: Cosmology Results With ~1500 New High-redshift Type Ia Supernovae Using The Full 5-year Dataset

DES Collaboration, T. M. C. Abbott, M. Acevedo +156

We present cosmological constraints from the sample of Type Ia supernovae (SN Ia) discovered during the full five years of the Dark Energy Survey (DES) Supernova Program. In contra…