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Evidence of TeV gamma-ray emission from the nearby starburst galaxy NGC 253

Itoh, Chie; Enomoto, R; Yanagita, S; Yoshida, T; Tanimori, T; Okumura, K; Asahara, A; Bicknell, Geoffrey; Clay, Roger W; Edwards, Philip G; Gunji, S; Hara, Shinji; Hara, T; Hattori, T; Hayashi, Sei; Hayashi, Seuchi; Kabuki, S; Kajino, F; Katagiri, H; Kawachi, A; Kifune, Tadashi; Kubo, H; Kushida, J; Matsubara, Y; Mizumoto, Y; Mori, Masaki; Moro, H; Muraishi, H; Muraki, Y; Naito, T; Nakase, T; Nishida, D; Nishijima, K; Ohishi, M; Patterson, Joseph R; Protheroe, Raymond; Sakurazawa, K; Swaby, D L; Tokanai, F; Tsuchiya, K; Tsunoo, H; Uchida, T; Watanabe, O; Watanabe, S; Yoshikoshi, T

Description

TeV gamma-rays were recently detected from the nearby normal spiral galaxy NGC 253 (Itoh et al. 2002). Observations to detect the Cherenkov light images initiated by gamma-rays from the direction of NGC 253 were carried out in 2000 and 2001 over a total period of ∼150 hours. The orientation of images in gamma-ray-like events is not consistent with emission from a point source, and the emission region corresponds to a size greater than 10 kpc in radius. Here, detailed descriptions of the...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
URI: http://hdl.handle.net/1885/88038
Source: Astronomy and Astrophysics

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