Results 111 to 120 of about 12,766 (215)

Optimal Reconstruction of Baryon Acoustic Oscillations for DESI 2024 [PDF]

open access: green
E. Paillas   +75 more
openalex   +1 more source

The SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations at Redshift of 0.72 with the DR14 Luminous Red Galaxy Sample [PDF]

open access: bronze, 2018
Julian E. Bautista   +37 more
openalex   +1 more source

Constraints on the speed of sound in the k-essence model of dark energy

open access: yesEuropean Physical Journal C: Particles and Fields
We consider a k-essence scalar field model for the late-time cosmic acceleration in which the sound speed, parametrized as $$c_s$$ c s is constant. We compute the relevant background and perturbation quantities corresponding to the observables like ...
Bikash R. Dinda, Narayan Banerjee
doaj   +1 more source

Optimal Transport Reconstruction of Baryon Acoustic Oscillations [PDF]

open access: green, 2022
Farnik Nikakhtar   +3 more
openalex   +1 more source

Streaming Velocities and the Baryon Acoustic Oscillation Scale [PDF]

open access: green, 2016
J. Blazek   +2 more
openalex   +1 more source

Uncalibrated Cosmic Standards as a Robust Test on Late-time Cosmological Models

open access: yesThe Astrophysical Journal
We present an assumption-minimized framework for testing late-time cosmological models using uncalibrated cosmic standards (UCS)—including standard rulers and standard candles—without relying on absolute calibrations.
Yihao Wang, Weikang Lin
doaj   +1 more source

Accurately Estimating Redshifts from CSST Slitless Spectroscopic Survey Using Deep Learning

open access: yesThe Astrophysical Journal
Chinese Space Station Telescope (CSST) has the capability to conduct a slitless spectroscopic survey simultaneously with a photometric survey. The spectroscopic survey will measure slitless spectra, potentially providing more accurate estimations of ...
Xingchen Zhou   +12 more
doaj   +1 more source

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