Submitted by Arts & Sciences Web Team on November 30, 2017 - 3:44pm
It seems like even black holes can’t resist the temptation to insert themselves unannounced into photographs. A cosmic photobomb found as a background object in images of the nearby Andromeda galaxy has revealed what could be the most tightly coupled pair of supermassive black holes ever seen.
As they report in a paper published online Nov. 20 in The Astrophysical Journal, astronomers from the University of Washington made this discovery using X-ray data from NASA’s Chandra X-ray Observatory and optical data from two ground-based telescopes, Gemini-North in Hawaii and the Palomar Transient Factory in California.
Read the full story at UW News, and a post by Trevor Dorn-Wallenstein on the Chandra blog.