Micronova

A micronova is a type of thermonuclear explosion on the surface of a white dwarf much smaller than the strength of a nova; being about 1×1039 ergs (1.0×10−12 foe; 1.0×1032 J) in strength, about a millionth that of a typical nova. It was first described in April 2022.[1][2][3]

Artist's impression of a micronova

A team at European Southern Observatory announced on 20 April 2022 that they identified three micronovae using data from the Transiting Exoplanet Survey Satellite (TESS).[4]

References
  1. S. Scaringi; P.J. Groot; C.Knigge; J.-P. Lasota; D. de Martino; Y. Cavecchi; D.A.H. Buckley; M.E. Camisassa (19 April 2022). "Triggering micronovae through magnetically confined accretion flows in accreting white dwarfs". arXiv:2204.09073 [astro-ph.HE].
  2. S. Scaringi; P. J. Groot; C. Knigge; A. J. Bird; E. Breedt; D. A. H. Buckley; Y. Cavecchi; N. D. Degenaar; D. de Martino; C. Done; M. Fratta; K. Iłkiewicz; E. Koerding; J.-P. Lasota; C. Littlefield; C. F. Manara; M. O’Brien; P. Szkody; F. X. Timmes (20 April 2022). "Localized thermonuclear bursts from accreting magnetic white dwarfs". Nature. 604: 447–450. arXiv:2204.09070. doi:10.1038/s41586-022-04495-6. ISSN 1476-4687.
  3. Ouellette, Jennifer (20 April 2022). "Meet the micronova: Astronomers discovered new type of stellar explosion". Ars Technica.
  4. Kizer Whitt, Kelly (25 April 2022). "Micronovas are new! They're small, but mighty". EarthSky.

See also
  • The dictionary definition of micronova at Wiktionary
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