SN 2020fqv explained

SN 2020fqv was a type II supernova which occurred in March 2020 in the spiral galaxy NGC 4568, approximately 60 million light years from Earth. The explosion was detected by both the Zwicky Transient Facility and the Transiting Exoplanet Survey Satellite. Observations were obtained by the Hubble Space Telescope both years before and just 26 hours after it exploded, as well as many other instruments, providing the first holistic view of such an event.^[2] ^[3] ^[4] ^[5] ^[6]

The progenitor star is modelled to be a red supergiant with a radius of and a mass of, fairly typical of type II supernova progenitors.^[6]

Notes and References

Web site: SN 2020fqv . Transient Name Server . IAU supernova working group . 2022-02-28 .
Web site: 2021-10-28. The last days of a massive star before it went supernova. 2021-11-01. SYFY Official Site. en-US.
Web site: Gough. Evan. 2021-10-29. Quick Action Let Hubble Watch the Earliest Stages of an Unfolding Supernova Detonation. 2021-11-01. Universe Today. en-US.
Web site: 2021-11-25. Astronomers Observe 'Rosetta Stone of Supernovae' Sci-News.com. 2021-10-30. Breaking Science News Sci-News.com. en-US.
Web site: Howell. Elizabeth. 2021-10-25. Hubble telescope spots doomed star that is the 'Rosetta stone' of supernovas. 2021-10-30. Space.com. en.
Tinyanont. Samaporn. Ridden-Harper. R. Foley. R J. Morozova. V. Kilpatrick. C D. Dimitriadis. G. DeMarchi. L. Gagliano. A. Jacobson-Galán. W V. Messick. A. Pierel. J D R. 2021-10-26. Progenitor and close-in Circumstellar Medium of Type II Supernova 2020fqv from high-cadence photometry and ultra-rapid UV spectroscopy. Monthly Notices of the Royal Astronomical Society. 512 . stab2887. 2777–2797 . 10.1093/mnras/stab2887. 0035-8711. 2110.10742.