A Rare Case of Midsize Black Hole of Galaxy M82

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Astrophysicists by using archival data from an X-ray satellite have identified what they now consider is a strange midsize black hole. We are familiar with stellar black holes produced by dying stars; they are comparatively small, evaluating up to about 25 times the mass of our sun. According to our current knowledge, we know of supermassive black holes, now supposed to exist in in the centres of most galaxies, comprising hundreds of thousands to billions of times the mass of our host star. But this black hole called M82 X-1 – the perkiest X-ray source in the galaxy Messier 82(M82), situated 12 million light-years away, is supposed to be about 400 times the sun’s mass. And that typical characteristic makes it very rare. Tod Strohmayer, an astrophysicist at NASA’s Goddard Space Flight Center, noted on the rareness of midsize black holes: “Between the two extremes of stellar and supermassive black holes, it’s a real desert; with only about half a dozen objects whose inferred masses place them in the middle ground.” You can learn more about this rare black hole in the videos below……
A composite image of the nearby galaxy Messier 82. Image credit: full-field – X-ray: NASA / CXC / JHU / D. Strickland; optical: NASA / ESA / STScI / AURA/ Hubble Heritage Team; IR: NASA / JPL-Caltech /Univ. of AZ / C. Engelbracht; inset – NASA / CXC / Tsinghua University / H. Feng et al.

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