NASA Releases a Simulation of 22 Known Black Hole Binary Systems - by PaulMattSutter
All of the 22 confirmed systems in the visual live in the Milky Way galaxy or our nearest neighbor, the Large Magellanic CloudThe star colors are accurate. For example, the hottest stars, which are blue-white, are five times hotter than the Sun. The coolest stars, which are red, are 45% cooler.
The accretion disks are so bright that they outshine the stars, so their coloring is on a different scale.how we see them from our perspective on EarthThe visualization includes some famous black hole binary systems. For example, there’s Cygnus X-1, the first known black hole, which sits 7,200 light-years away from us. In that system, the black hole has a mass of 21 solar masses, and the companion star is 40 times bigger than the sun.
By studying the orbiting system, astronomers can figure out the properties of the black hole. The X-ray emission gives a sense of the overall size, while the orbit of the companion reveals the mass. Putting these together gives the density, and if it’s above a certain threshold then astronomers know that it’s a black hole.
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