Fermi establishes classical novae as a distinct class of gamma-ray sources

Cheung, C. C.

doi:10.1126/science.1253947

Fermi establishes classical novae as a distinct class of gamma-ray sources

Journal Article · Thu Jul 31 00:00:00 EDT 2014 · Science

DOI:https://doi.org/10.1126/science.1253947· OSTI ID:1356459

Cheung, C. C. ^[1]

Naval Research Lab. (NRL), Washington, DC (United States); et al.

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 γ rays and stood in contrast to the first γ-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 γ-ray sources detected over 2-3 week durations. The γ-ray detections point to unexpected high-energy particle acceleration processes linked to the mass ejection from thermonuclear explosions in an unanticipated class of Galactic γ-ray sources.

View Accepted Manuscript (DOE)

Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE

Contributing Organization:: The Fermi-LAT Collaboration

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1356459

Journal Information:: Science, Journal Name: Science Journal Issue: 6196 Vol. 345; ISSN 0036-8075

Publisher:: AAASCopyright Statement

Country of Publication:: United States

Language:: English

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