Tag Archive for 'Hills mechanism'

Artist’s impression of a hypervelocity star ejected from the Large Magellanic Cloud (shown on right). When a binary star system ventures too close to a supermassive black hole, the intense gravitational forces tear the pair apart. One star is captured into a tight orbit around the black hole, while the other is flung outward at extreme velocities -- often exceeding thousands of kilometers per second -- becoming a hypervelocity star. The inset illustration depicts this process: the original binary’s orbital path is shown as interwoven lines, with one star being captured by the black hole (near center of inset) while the other is ejected into space (lower right). Image credit: CfA / Melissa Weiss.

Astronomers Find Strong Evidence for Supermassive Black Hole in Large Magellanic Cloud

Mar 6, 2025 by News Staff

The mass of the supermassive black hole in the center of the Large Magellanic Cloud, a small satellite galaxy of the Milky Way, is about 600,000 solar...

An artist’s impression of S5-HVS1’s ejection by Sagittarius A*, the supermassive black hole at the center of the Milky Way Galaxy. Sagittarius A* and the captured binary partner to S5-HVS1 are seen far away in the left corner of the picture, while S5-HVS1 is in the foreground, speeding away from them. Image credit: James Josephides, Swinburne Astronomy Productions.

S5-HVS1: Hypervelocity Star Ejected by Milky Way’s Supermassive Black Hole

Nov 13, 2019 by News Staff

A main-sequence hypervelocity star traveling at huge speeds after being ejected by Sagittarius A*, the supermassive black hole at the center of our Milky...