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ASASSN-19bt
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| Object type | Tidal disruption event |
|---|---|
| Constellation | Volans |
| 07h 00m 11.546s[1] | |
| Declination | −66° 02′ 24.14″[1] |
| Redshift | 0.0262 |
 Related media on Wikimedia Commons | |
ASASSN-19bt was a tidal disruption event (TDE) known for being the first such event discovered. It was discovered by the All Sky Automated Survey for SuperNovae (ASAS-SN) project, with early-time, detailed observations by the TESS satellite. It was first detected on January 21, 2019, and reached peak brightness on March 4.[2][3][4]
The black hole which caused the TDE has a mass of around 6 million suns and is in the 16th magnitude galaxy 2MASX J07001137-6602251 in the constellation Volans at a redshift of 0.0262, around 375 million light years away.[2][5]
Observations in UV light made with NASA's Neil Gehrels Swift Observatory showed a drop in the temperature of the tidal disruption from around 71,500 to 35,500 degrees Fahrenheit (40,000 to 20,000 degrees Celsius) over a few days. This is the first time such an early temperature drop has been seen in a tidal disruption event.[3] The transient resulting from the tidal disruption event has been cataloged as AT 2019ahk.[1]
References
[edit]- ^ a b c "AT 2019ahk". Transient Name Server.
- ^ a b Holoien, Thomas W.-S.; Vallely, Patrick J.; Auchettl, Katie; Stanek, K. Z.; Kochanek, Christopher S.; French, K. Decker; Prieto, Jose L.; Shappee, Benjamin J.; Brown, Jonathan S.; Fausnaugh, Michael M.; Dong, Subo; Thompson, Todd A.; Bose, Subhash; Neustadt, Jack M. M.; Cacella, P.; Brimacombe, J.; Kendurkar, Malhar R.; Beaton, Rachael L.; Boutsia, Konstantina; Chomiuk, Laura; Connor, Thomas; Morrell, Nidia; Newman, Andrew B.; Rudie, Gwen C.; Shishkovsky, Laura; Strader, Jay (2019). "Discovery and Early Evolution of ASASSN-19bt, the First TDE Detected by TESS". The Astrophysical Journal. 883 (2): 111. arXiv:1904.09293. Bibcode:2019ApJ...883..111H. doi:10.3847/1538-4357/ab3c66. S2CID 128307681.
- ^ a b Garner, Rob (2019-09-25). "TESS Spots Its 1st Star-shredding Black Hole". NASA. Retrieved 2019-09-28.
- ^ "NASA's TESS Mission Spots Its 1st Star-shredding Black Hole - NASA". 2019-09-26. Retrieved 2025-04-14.
- ^ Kazmierczak, Scott Wiessinger and Jeanette (2019-09-26). "NASA Scientific Visualization Studio | TESS Catches Its First Star-destroying Black Hole". NASA Scientific Visualization Studio. Retrieved 2025-04-14.
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