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Fastest star ever seen is moving at 8% the speed of light 5nvklj





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Fastest star ever seen is moving at 8% the speed of light

Dragon
Dragon
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Fastest star ever seen is moving at 8% the speed of light Empty Fastest star ever seen is moving at 8% the speed of light

Post by Dragon Sun Aug 23, 2020 1:46 pm

In the center of our galaxy, hundreds of stars closely orbit a supermassive black hole. Most of these stars have large enough orbits that their motion is described by Newtonian gravity and Kepler's laws of motion.

But a few orbit so closely that their orbits can only be accurately described by Einstein's theory of general relativity. The star with the smallest orbit is known as S62. Its closest approach to the black hole has it moving more than 8% of light speed.

Our galaxy's supermassive black hole is known as Sagittarius A* (SgrA*). It is a mass of about 4 million suns, and we know this because of the stars that orbit it. For decades, astronomers have tracked the motion of these stars. By calculating their orbits, we can determine the mass of SgrA*.

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Fastest star ever seen is moving at 8% the speed of light 334pu7m
Dragon
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Fastest star ever seen is moving at 8% the speed of light Empty Re: Fastest star ever seen is moving at 8% the speed of light

Post by Dragon Sun Aug 23, 2020 1:48 pm

Fastest star ever seen is moving at 8% the speed of light 1-fasteststare
Credit: ESO/M. Kornmesser

A simulation of how S2 moves so fast that it’s redshifted.

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Fastest star ever seen is moving at 8% the speed of light 334pu7m
Dragon
Dragon
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Fastest star ever seen is moving at 8% the speed of light Empty Re: Fastest star ever seen is moving at 8% the speed of light

Post by Dragon Sun Aug 23, 2020 1:50 pm

Fastest star ever seen is moving at 8% the speed of light 2-fasteststare
Credit: Luís Calçada/ESO

Orbital precession of a star near a supermassive black hole.

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Fastest star ever seen is moving at 8% the speed of light 334pu7m
Dragon
Dragon
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Posts : 7263
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Fastest star ever seen is moving at 8% the speed of light Empty Re: Fastest star ever seen is moving at 8% the speed of light

Post by Dragon Sun Aug 23, 2020 1:52 pm

Fastest star ever seen is moving at 8% the speed of light 5f3a690250dfe
Credit: arXiv:2008.04764 [astro-ph.GA]

S4711 on its orbit around Sgr A*.

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Fastest star ever seen is moving at 8% the speed of light 334pu7m

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