Huge Black Hole Found in Dwarf Galaxy.
A supermassive black hole discovered inside a nearby dwarf galaxy may help explain how galaxies grew in the early universe.
At its center, nearly every large galaxy contains a supermassive black hole surrounded by a big bulge of stars. But whether the black hole or the bulge formed first has long been a chicken-and-egg question in astronomy.
New x-ray and radio observations of the dwarf galaxy Henize 2-10 show that, while the tiny galaxy lacks a bulge, it very likely contains a supermassive black hole—one about a quarter as large as the black hole at the center of our Milky Way.
Henize 2-10 is small and irregularly shaped, and it’s actively formiReines had been studying star-forming regions in Henize 2-10 using the Very Large Array in New Mexico and the Hubble Space Telescope when she found a compact source of radio waves emanating from the galaxy.
The orbiting Chandra X-ray Observatory later revealed x-rays being emitted from the same source.
The radiation pattern is “characteristic of a black hole feeding into its environment,” Reines said. But unlike smaller black holes that form from collapsed stars, this black hole is about a million times the mass of a star.
Such supermassive black holes have been found in small galaxies before, but those galaxies are “like scaled-down versions of normal galaxies,” Reines said.
“Henize 2-10 has this irregular shape … and the star formation really sets it apart,” she said. “We think we might be witnessing the early phase of galaxy evolution.”ng stars, which means it’s very similar to early galaxies, researchers say. The new finding therefore suggests that early galaxies also formed their central black holes before developing bulges.
Ah, another black hole discovery, if only they could be able to trace all these black holes to its white hole counterpart.
Keep searching humans, you’re almost there