Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/12402
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Type: | Journal article |
Title: | Detection of diffuse TeV gamma-ray emission from the nearby starbust galaxy NGC 253 |
Author: | Itoh, C. Enomoto, R. Yanagita, S. Yoshida, T. Asahara, A. Bicknell, G. Clay, R. Edwards, P. Gunji, S. Hara, S. Hara, T. Hattori, T. Hayashi, S. Hayashi, S. Kabuki, S. Kajino, F. Katagiri, H. Kawachi, A. Kifune, T. Kubo, H. et al. |
Citation: | Astronomy and Astrophysics: a European journal, 2002; 396(1):L1-L4 |
Publisher: | EDP Sciences |
Issue Date: | 2002 |
ISSN: | 0004-6361 1432-0746 |
Statement of Responsibility: | C. Itoh ... R. W. Clay ... J. R. Patterson, R. J. Protheroe ... D. L. Swaby ... et al. |
Abstract: | We report the TeV gamma-ray observations of the nearby normal spiral galaxy NGC 253. At a distance of ∼2.5 Mpc, NGC 253 is one of the nearest starburst galaxies. This relative closeness, coupled with the high star formation rate in the galaxy, make it a good candidate TeV gamma-ray source. Observations were carried out in 2000 and 2001 with the CANGAROO-II 10m imaging atmospheric Cerenkov telescope. TeV gamma-ray emission is detected at the ∼11σ level with a flux of (7.8 ± 2.5) × 10⁻¹² cm⁻² s⁻¹ at energies >0.5 TeV. The data indicate that the emission region is broader than the point spread function of our telescope. |
Keywords: | gamma rays: observation; galaxies: individual: NGC 253; galaxies: starburst; cosmic rays |
Provenance: | An erratum for this article has been published. Please click on the description link below to view the erratum. |
Rights: | © ESO 2002. Article published by EDP Sciences |
DOI: | 10.1051/0004-6361:20021565 |
Description (link): | http://www.aanda.org/index.php?option=com_article&access=doi&doi=10.1051/0004-6361:20066244&Itemid=129 |
Published version: | http://dx.doi.org/10.1051/0004-6361:20021565 |
Appears in Collections: | Aurora harvest 7 Physics publications |
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hdl_12402.pdf | Published version | 146.82 kB | Adobe PDF | View/Open |
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