2024-01-28 13:31:15
[SAPOD]Today’s “Space Image”. We introduce characteristic images introduced by sorae in the past, attractive images released by space agencies of various countries, and images submitted by space astronomy fans and experts. (There is a link to the original article at the end of the article)
(Source: sorae portal site to the universe)
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- Image Credit: Lauren Fanfer
- sorae – The mass is three times that of the sun.Lightest black hole ever observed reported
This was introduced by sorae in the April 28, 2021 article “The mass is three times that of the sun. The lightest black hole in the history of observation is reported.”An imaginary drawing of a stellar-mass black hole (left) and the red giant star V723 (right)is.
A research group led by Tharindu Jayasinghe at The Ohio State University has announced the discovery of a stellar-mass black hole (a black hole with a mass up to several tens of times that of the sun) with a mass approximately three times that of the sun. did. The research group claims that what they have discovered is the lightest black hole ever observed, and that it fills the “mass gap” between neutron stars and black holes.
According to the research group, the newly discovered black hole forms a binary star with the red giant star V723, located approximately 1,500 light-years away in the constellation Monoceros. Although V723’s mass is regarding the same as the sun, its diameter is thought to be regarding 25 times that of the sun.
The research group calls this black hole a “unicorn” because it was discovered in the constellation Monoceros. “Unicorn” and V723 revolve around each other on a cycle of regarding 60 days, and V723 is expected to have an elongated shape due to the tidal force caused by the gravity of “Unicorn”, which has three times the mass. I am. Todd Thompson of Ohio State University, who participated in the study, says, “Just like the moon causes tides, black holes distort the shape of stars like a football.”
(Quoted from the original article)
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