Quasar outburst revises understanding of universe, quasars
Wednesday, December 16, 2015 - 23:00
in Astronomy & Space
An outburst from a distant quasar known as PKS 1441+25 in April of this year gave astronomers at the gamma-ray telescope VERITAS an opportunity to measure the density of the optical 'fog' that lies between the quasar and Earth and to deduce the surprising separation of the high-energy emission from the black hole that drives it.