Gamma-Ray Emission Concurrent with the Nova in the Symbiotic Binary V407 Cygni
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F10%3A00481853" target="_blank" >RIV/67985815:_____/10:00481853 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1126/science.1192537" target="_blank" >http://dx.doi.org/10.1126/science.1192537</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1126/science.1192537" target="_blank" >10.1126/science.1192537</a>
Alternative languages
Result language
angličtina
Original language name
Gamma-Ray Emission Concurrent with the Nova in the Symbiotic Binary V407 Cygni
Original language description
Novae are thermonuclear explosions on a white dwarf surface fueled by mass accreted from a companion star. Current physical models posit that shocked expanding gas from the nova shell can produce x-ray emission, but emission at higher energies has not been widely expected. Here, we report the Fermi Large Area Telescope detection of variable gamma-ray emission (0.1 to 10 billion electron volts) from the recently detected optical nova of the symbiotic star V407 Cygni. We propose that the material of the nova shell interacts with the dense ambient medium of the red giant primary and that particles can be accelerated effectively to produce pi(0) decay gamma-rays from proton-proton interactions. Emission involving inverse Compton scattering of the red giant radiation is also considered and is not ruled out.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Science
ISSN
0036-8075
e-ISSN
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Volume of the periodical
329
Issue of the periodical within the volume
5993
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
817-821
UT code for WoS article
000280809900044
EID of the result in the Scopus database
2-s2.0-77955628305