Gamma-Ray Emission Concurrent with the Nova in the Symbiotic Binary V407 Cygni

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Gamma-Ray Emission Concurrent with the Nova in the Symbiotic Binary V407 Cygni

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Gamma-Ray Emission Concurrent with the Nova in the Symbiotic Binary V407 Cygni

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Science

ISSN

0036-8075

e-ISSN

—

Svazek periodika

329

Číslo periodika v rámci svazku

5993

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

817-821

Kód UT WoS článku

000280809900044

EID výsledku v databázi Scopus

2-s2.0-77955628305