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.

Ackermann M, Ajello M, Albert A, Baldini L, Ballet J, Barbiellini G, et al. (2014). Fermi establishes classical novae as a distinct class of gamma-ray sources. SCIENCE, 345(6196), 554-558 [10.1126/science.1253947].

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

D'AMMANDO, FILIPPO;
2014

Abstract

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.
2014
Ackermann M, Ajello M, Albert A, Baldini L, Ballet J, Barbiellini G, et al. (2014). Fermi establishes classical novae as a distinct class of gamma-ray sources. SCIENCE, 345(6196), 554-558 [10.1126/science.1253947].
Ackermann M; Ajello M; Albert A; Baldini L; Ballet J; Barbiellini G; Bastieri D; Bellazzini R; Bissaldi E; Blandford RD; Bloom ED; Bottacini E; Brandt...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/595717
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