repeated outbursts of an event called ASASSN-14ko tagged posts

An ‘Old Faithful’ Active Galaxy: Black Hole Rips Away at Star

This image of active galaxy ESO 253-3 was captured by the European Space Observatory’s Multi Unit Spectroscopic Explorer as part of the All-weather MUse Supernova Integral-field of Nearby Galaxies (AMUSING) survey. ESO 253-3 displays the most predictable and frequent flares scientists have yet identified in an active galaxy.
Credits: Michael Tucker (University of Hawai’i) and the AMUSING survey

During a typical year, over a million people visit Yellowstone National Park, where the Old Faithful geyser regularly blasts a jet of boiling water high in the air. Now, an international team of astronomers has discovered a cosmic equivalent, a distant galaxy that erupts roughly every 114 days.

Using data from facilities including NASA’s Neil Gehrels Swift Observatory and Transiting Exopla...

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