Published: Fri, January 17, 2020
Sci-tech | By Patricia Wade

Astronomers discover class of strange objects near our galaxy's enormous black hole

Astronomers discover class of strange objects near our galaxy's enormous black hole

These peculiar objects look like gas clouds but behave like stars.

During the last decade, experts looking in the black hole's cosmic neighborhood saw two odd objects which seemed to be orbiting this black hole.

"I beget the gasoline streamer hypothesis worked effectively after we exact had G1 and G2, nevertheless with 6 objects, orbiting at very various inclinations, this hypothesis is more vital to appear at", talked about Anna Ciurlo, an astronomer at UCLA and first creator on the contemporary eye.

G1 and G2 have attracted attention because they appear to interact with the supermassive galactic black hole and possibly improve its accretion activity.

The objects did not pique the interest of scientists until they travelled close to the black hole, which forced them to stretch out over space.

These stars eventually merged into one single extremely large star which is cloaked in unusually thick gas and dust.

Milky Way's supermassive black hole, known as Sagittarius A*, is known for its vast gravitational pull that attracts various cosmic objects such as dust, gas and even stars to its center.

"At the time of closest approach, G2 had a really unusual signature".

The four new objects join G1 and G2, which were found in 2005 and 2014 respectively, intriguing scientists because they seem to be compact most of the time but stretch out as they get closer to the black hole during their orbit.

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"One of the things that has gotten everyone excited about the G objects is that the stuff that gets pulled off of them by tidal forces as they sweep by the central black hole must inevitably fall into the black hole", said Mark Morris, study co-author and UCLA professor of physics and astronomy.

"When that happens, it might be able to produce an impressive fireworks show since the material eaten by the black hole will heat up and emit copious radiation before it disappears across the event horizon", Morris added.

"Mergers of stars may be happening in the universe more often than we thought, and likely are quite common", she said.

Ghez postulated what astronomers were seeing became as soon as no longer a gasoline cloud, nevertheless the fabricated from merged binary stars, after two stars orbiting each and each various collided and formed a single, massive enormous title. But G2's close encounter with the supermassive black hole changed that line of thought. "Black holes may be driving binary stars to merge", Andrea Ghaz of the University of California and co-author of a new study said in a statement. Many stars we watch and don't understand are very likely to be the product of such mergers.

Just like most galaxies, the galactic core of the Milky Way hosts a supermassive black hole that will indiscriminately spaghettify and devour all objects that tread too close to it, or does it?

They say the objects represent a new class of unusual objects. "In practice, we believe they hide a star inside, surrounded by dust and gas", Dr. Anna Ciurlo, a UCLA postdoctoral researcher and lead author, tells MEA WorldWide (MEAWW).

During this time, the objects lost some of its material to the black hole, says Ciurlo.

"The Earth is in the suburbs compared to the center of the galaxy, which is some 26,000 light-years away". "The centre of our galaxy has a density of stars a billion times higher than our part of the galaxy. The center of the galaxy is where extreme astrophysics occurs - the X-sports of astrophysics". The magnetic fields are more extreme.

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