The most luminous X-ray source currently known is a quasar called
PKS2126-158. It has an X-ray luminosity of
Imagine the Universe is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA's Goddard Space Flight Center.
The Imagine Team
Acting Project Leader: Dr. Barbara Mattson
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