Discovery of gamma-ray emission from the extragalactic pulsar wind nebula N 157B with HESS

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10127206" target="_blank" >RIV/00216208:11320/12:10127206 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1051/0004-6361/201219906" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201219906</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201219906" target="_blank" >10.1051/0004-6361/201219906</a>

Result language

angličtina

Original language name

Discovery of gamma-ray emission from the extragalactic pulsar wind nebula N 157B with HESS

Original language description

We present the significant detection of the first extragalactic pulsar wind nebula (PWN) detected in gamma rays, N 157B, located in the large Magellanic Cloud (LMC). Pulsars with high spin-down luminosity are found to power energised nebulae that emit gamma rays up to energies of several tens of TeV. N 157B is associated with PSR J0537-6910, which is the pulsar with the highest known spin-down luminosity. The High Energy Stereoscopic System telescope array observed this nebula on a yearly basis from 2004 to 2009 with a dead-time corrected exposure of 46 h. The gamma-ray spectrum between 600 GeV and 12 TeV is well-described by a pure power-law with a photon index of 2.8 +/- 0.2(stat) +/- 0.3(syst) and a normalisation at 1 TeV of (8.2 +/- 0.8(stat) +/- 2.5(syst)) x 10(-13) cm(-2) s(-1) TeV-1. A leptonic multi-wavelength model shows that an energy of about 4 x 10(49) erg is stored in electrons and positrons. The apparent efficiency, which is the ratio of the TeV gamma-ray luminosity to th

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/GPP203%2F11%2FP363" target="_blank" >GPP203/11/P363: Study of Very High Energy Cosmic Gamma Rays with the H.E.S.S. experiment</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

Confidentiality

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

Name of the periodical

Astronomy and Astrophysics

ISSN

0004-6361

e-ISSN

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Volume of the periodical

545

Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

5

Pages from-to

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UT code for WoS article

000309254900158

EID of the result in the Scopus database

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