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Fermi establishes classical novae as a distinct class of gamma-ray sources
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2014 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 345, no 6196, 554-558 p.Article in journal (Refereed) Published
Abstract [en]

A classical nova results from runaway thermonuclear explosions on the surface of a white dwarf that accretes matter from a low-mass main-sequence stellar companion. In 2012 and 2013, three novae were detected in gamma rays and stood in contrast to the first gamma-ray-detected nova V407 Cygni 2010, which belongs to a rare class of symbiotic binary systems. Despite likely differences in the compositions and masses of their white dwarf progenitors, the three classical novae are similarly characterized as soft-spectrum transient gamma-ray sources detected over 2- to 3-week durations. The gamma-ray detections point to unexpected high-energy particle acceleration processes linked to the mass ejection from thermonuclear explosions in an unanticipated class of Galactic gamma-ray sources.

Place, publisher, year, edition, pages
2014. Vol. 345, no 6196, 554-558 p.
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Physical Sciences
URN: urn:nbn:se:su:diva-107031DOI: 10.1126/science.1253947ISI: 000339651300043OAI: diva2:743519


Available from: 2014-09-04 Created: 2014-09-02 Last updated: 2014-09-04Bibliographically approved

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Conrad, JanLarsson, Stefan
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Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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