3 papers
astro-ph.CO2025
The Impact of Spectroscopic Redshift Errors on Cosmological Measurements
Shengyu He, Jiaxi Yu, Antoine Rocher +5
Spectroscopic redshift errors, including redshift uncertainty and catastrophic failures, can bias cosmological measurements from galaxy redshift surveys at sub-percent level. In th…
astro-ph.CO2025
Dynamical Dark Energy in light of the DESI DR2 Baryonic Acoustic Oscillations Measurements
Gan Gu, Xiaoma Wang, Yuting Wang +57
Understanding whether cosmic acceleration arises from a cosmological constant or a dynamical component is a central goal of cosmology, and the Dark Energy Spectroscopic Instrument…
astro-ph.CO2025
Measuring the Mean Free Path of HI Ionizing Photons at with DESI Y1 Quasars
Anning Gao, Jason X. Prochaska, Zheng Cai +31
The mean free path of ionizing photons () in the intergalactic medium (IGM) is a crucial quantity in modelling the ionization state of IGM and the extragalac…