E. Gaztañaga

ARRAKIHS: The observability of tidally stripped satellites in a Milky Way-like halo

Current and forthcoming deep imaging surveys are revealing an increasing number of low surface brightness stellar streams around Milky Way-like galaxies. These streams encode information about the orbital evolution and internal structure of their disrupted dwarf galaxy progenitor...

Measurement of the galaxy-velocity power spectrum of DESI tracers with the kinematic Sunyaev-Zel’dovich effect using DESI DR2 and ACT DR6

Joint analyses of high-resolution CMB temperature maps with galaxy surveys provide a unique way to reconstruct the radial velocity field of the underlying matter distribution via the kinematic Sunyaev-Zeldovich (kSZ) effect. Using data from the Atacama Cosmology Telescope (ACT) D...

Unveiling Hidden Lyman Alpha Emitters in the DESI DR1 Data

Abstract We present an automatic method based on machine learning convolutional neural network (CNN) architecture to detect Ly α emitters (LAEs) hidden in the Data Release 1 spectroscopic data set of the Dark Energy Spectroscopic Instrument (DESI). Those LAEs mostly have incorrec...