Measurement of the galaxy-velocity power spectrum of DESI tracers with the kinematic Sunyaev–Zeldovich effect using DESI DR2 and ACT DR6
- kinetic SZ: Doppler shift of CMB photons scattered by electrons moving with a bulk velocity relative to the CMB rest frame
- thermal SZ: inverse Compton scattering of CMB photons by hot electrons in galaxy clusters
- Cosmic Infrared Background: thermal dust emission from unresolved star-forming galaxies throughout cosmic history
