Tag Archives: blazar

[ad_1] Credit: CC0 Public Domain A two-year cycle in the gamma brightness of a blazar, a galaxy powered by a supermassive black hole, has been confirmed by ten years of observations at …

[ad_1] "Where exactly in the active galaxy, neutrinos are produced will be a topic of debate," he added in an email. "It's clear that the supermassive black hole provides the power of …