Detection of diffuse TeV gamma-ray emission from the neaby starburst galaxy NGC 253
Open Access
- 22 November 2002
- journal article
- letter
- Published by EDP Sciences in Astronomy & Astrophysics
- Vol. 396 (1) , L1-L4
- https://doi.org/10.1051/0004-6361:20021565
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 10 m imaging atmospheric Cerenkov telescope. TeV gamma-ray emission is detected at the ~ level with a flux of at energies >0.5 TeV. The data indicate that the emission region is broader than the point spread function of our telescope.Keywords
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