NuSTAR observations of a varying-flux quasar in the Epoch of Reionization

Lea Marcotulli, Thomas Connor, Eduardo Bañados +13

With enough X-ray flux to be detected in a 160s scan by SRG/eROSITA, the $z=6.19$ quasar CFHQS J142952+544717 is, by far, the most luminous X-ray source known at $z>6$. We pres…