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 106 solar 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][1]
| Event type | Tidal disruption event |
|---|---|
| Constellation | Eridanus |
| Right ascension | 04h 46m 37.88s[1] |
| Declination | −10° 13′ 34.90″[1] |
| Distance | 215 million light years (65 Mpc)[1] |
| Redshift | 0.01513[1] |
| Host | 2MASX J04463790-1013349[1] |
References
edit- ^ a b c d e f g Nicholl, M.; Wevers, T.; Oates, S. R.; Alexander, K. D.; Leloudas, G.; Onori, F.; Jerkstrand, A.; Gomez, S.; Campana, S.; Arcavi, I.; Charalampopoulos, P.; Gromadzki, M.; Ihanec, N.; Jonker, P. G.; Lawrence, A.; Mandel, I.; Schulze, S.; Short, P.; Burke, J.; McCully, C.; Hiramatsu, D.; Howell, D. A.; Pellegrino, C.; Abbot, H.; Anderson, J. P.; Berger, E.; Blanchard, P. K.; Cannizzaro, G.; Chen, T-W; Dennefeld, M. (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. S2CID 219305100.
- ^ Starr, Michelle (12 October 2020). "Witness The Very Last Scream of Light From a Star Devoured by a Black Hole". ScienceAlert. Retrieved 2020-10-13.
- ^ "ESO telescopes record last moments of star devoured by a black hole". ScienceDaily. Retrieved 2020-10-13.
- ^ "Death by Spaghettification: ESO Telescopes Record Last Moments of Star Devoured by a Black Hole". www.eso.org. European Southern Observatory. Retrieved 2020-10-13.
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