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A strong ultraviolet pulse from a newborn type Ia supernova
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Number of Authors: 22
2015 (English)In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 521, no 7552, 328-+ p.Article in journal (Refereed) Published
Abstract [en]

Type Ia supernovae(1) are destructive explosions of carbon-oxygen white dwarfs(2,3). Although they are used empirically to measure cosmological distances(4-6), the nature of their progenitors remains mysterious(3). One of the leading progenitor models, called the single degenerate channel, hypothesizes that a white dwarf accretes matter from a companion star and the resulting increase in its central pressure and temperature ignites thermonuclear explosion(3,7,8). Here we report observations with the Swift Space Telescope of strong but declining ultraviolet emission from a type Ia supernova within four days of its explosion. This emission is consistent with theoretical expectations of collision between material ejected by the supernova and a companion star(9), and therefore provides evidence that some type Ia supernovae arise from the single degenerate channel.

Place, publisher, year, edition, pages
2015. Vol. 521, no 7552, 328-+ p.
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:su:diva-118351DOI: 10.1038/nature14440ISI: 000354816500050OAI: diva2:822695
Available from: 2015-06-17 Created: 2015-06-15 Last updated: 2015-06-17Bibliographically approved

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Johansson, JoelAmanullah, RahmanGoobar, ArielSollerman, JesperTaddia, Francesco
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)Department of Astronomy
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Astronomy, Astrophysics and Cosmology

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