In 2020, astronomers from the European Southern Observatory (ESO) advanced the discovery of HR 6819, a triple system with a binary star that they believe contains a stellar black hole.
According to their calculations, this black hole was then the closest known to Earth.
A hypothesis which, as
Futura
reports , is now being questioned.
In an article published in the scientific journal Astronomy & Astrophysics, astronomers now believe that HR 6819 is a double star without a black hole.
Thanks to the combined use of the Very Large Telescope (VLT) and the Very Large Telescope Interferometer (VLTI) of the ESO (European Astral Observatory), which allows them to obtain a better definition of the observed details, astronomers now consider that HR 6819 is a “vampire system”.
Phenomenon of “stellar vampirization”
In other words, what scientists had observed in 2020 would be, according to their recent interpretation, a phenomenon of “stellar vampirism”.
This is a phenomenon of aspiration by a star from the atmosphere of its stellar companion, specifies Futura.
From then on, the donor star being stripped of its matter, the recipient star begins to rotate more rapidly.
This is what scientists would have observed in 2020.
However, this phase of observation is made complex because of the rare and ephemeral nature of the phenomenon, which explains the misunderstanding of astronomers.
It actually illustrates the evolution of a binary system, which is exciting news for scientists who now hope to study the impact of this vampirism on the evolution of massive stars to better understand gravitational waves and explosions of stars. supernova.
Science
Space: Why "multi-messenger" astronomy allows us to better understand the universe
Science
Space: A huge black hole discovered very close to our galaxy
Space
Astronomy
Black hole
Science
0 comment
0 share
Share on Messenger
Share on Facebook
Share on Twitter
Share on Flipboard
Share on Pinterest
Share on Linkedin
Send by Mail
To safeguard
A fault ?
To print