Black hole’s annual feast begins | Science News


Science News is a nonprofit.

Help us keep you informed.


Black hole’s annual feast begins

Astronomers offer explanations for source of light around object with an unusual yearly behavior

10:08am, August 24, 2012

BEIJING — A black hole about 290 million light-years away has just begun slurping material from its surroundings, an annual ritual revealed by a periodic brightening in X-ray wavelengths.

“It is picking up again, just today — or last night — which is good,” astronomer Roberto Soria of the International Center for Radio Astronomy Research in Perth, Australia, said August 22 at the 28th General Assembly of the International Astronomical Union. “I was starting to get a bit worried because this cycle was three or four days late.

This article is only available to Science News subscribers. Already a subscriber? Log in now. Or subscribe today for full access.

Get Science News headlines by e-mail.

More from Science News

From the Nature Index Paid Content