Detection of Gamma Rays from a Starburst Galaxy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F09%3A00207052" target="_blank" >RIV/00216208:11320/09:00207052 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Detection of Gamma Rays from a Starburst Galaxy

Original language description

Starburst galaxies exhibit in their central regions a highly increased rate of supernovae, the remnants of which are thought to accelerate energetic cosmic rays up to energies of ~ 10^15 eV. We report the detection of gamma rays -- tracers of such cosmicrays -- from the starburst galaxy NGC 253 using the H.E.S.S. array of imaging atmospheric Cherenkov telescopes. The gamma-ray flux above 220 GeV is F = (5.5 /- 1.0stat /- 2.8sys) x 10^-13 ph. s-1 cm-2, implying a cosmic-ray density about three orders ofmagnitude larger than that in the center of the Milky Way. The fraction of cosmic-ray energy channeled into gamma rays in this starburst environment is 5 times larger than that in our Galaxy.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BF - Elementary particle theory and high energy physics

OECD FORD branch

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Project

<a href="/en/project/LC527" target="_blank" >LC527: Center for Particle Physics</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

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

Name of the periodical

Science

ISSN

0036-8075

e-ISSN

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Volume of the periodical

326

Issue of the periodical within the volume

5956

Country of publishing house

US - UNITED STATES

Number of pages

3

Pages from-to

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UT code for WoS article

000271951000033

EID of the result in the Scopus database

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