http://www.newsweek.com/black-holes-jet-star-astronomy-977848

Thirteen years ago, two supernova-hunting teams were surveying colliding galaxy pair Arp 299—one looking for radio waves, one for infrared emissions. Instead of an exploding star, energetic infrared signals pointed to something even weirder.

Now, the researchers have pieced together a violent explanation: a bright jet of hot matter spurting from a dying star as it’s pulled apart by the gravity of a hungry supermassive black hole. The team reported its findings Thursday in the journal Science.