The Atacama Cosmology Telescope: Cross-correlation of cosmic microwave background lensing and quasars
The Atacama Cosmology Telescope: Cross-correlation of cosmic microwave background lensing and quasars
We measure the cross-correlation of Atacama Cosmology Telescope CMB lensing convergence maps with quasar maps made from the Sloan Digital Sky Survey DR8 SDSS-XDQSO photometric catalog. The CMB lensing-quasar cross-power spectrum is detected for the first time at a significance of 3.8 sigma, which directly confirms that the quasar distribution …