AT2019qiz is a
tidal disruption event (TDE) that occurred at a distance of 215 millions
light years (65
megaparsec), from Earth.[1] It is the nearest TDE discovered to date.[2] It was discovered in September 2019 by observations in ultraviolet, optical, X-ray and radio wavelengths made at the
European Southern Observatory (ESO)[3] situated in Chile and was presented in October 2020 by research published in the monthly notices of the
Royal Astronomical Society. It involves a star with a sun-like mass and a black hole with a mass of around 106solar masses. The TDE appears very young and increasing in brightness. The encounter tore away half of the mass of the star and threw debris at a speed of 10,000 km/s, comparable to that observed in
supernova explosions.[4][5]
References
^Nicholl, M.; Wevers, T.; Oates, S. R.; Alexander, K. D.; Leloudas, G.; Onori, F.; Jerkstrand, A.; Gomez, S.; Campana, S. (2020-09-14). "An outflow powers the optical rise of the nearby, fast-evolving tidal disruption event AT2019qiz". Monthly Notices of the Royal Astronomical Society. 499 (1): 482–504.
arXiv:2006.02454.
Bibcode:
2020MNRAS.499..482N.
doi:
10.1093/mnras/staa2824.
S2CID219305100.