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

Abstract

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 $\sim$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 analysis procedures and techniques are given.

16 pages, 27 figures, aa.cls

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• Evidence of TeV gamma-ray emission from the nearby starburst galaxy NGC 253
• Detection of diffuse TeV gamma-ray emission from the nearby starburst galaxy NGC 253
• Observation of gamma-rays greater than 10 TeV from Markarian 421
• Galactic Gamma-Ray Halo of the Nearby Starburst Galaxy NGC 253

Cited by in corpus (12)

• Teraelectronvolt Astronomy
• Detection of Gamma Rays From a Starburst Galaxy
• Detection of Sub-TeV Gamma-Rays from the Galactic Center Direction by CANGAROO-II
• Astrophysical Origins of Ultrahigh Energy Cosmic Rays
• High energy gamma-ray emission from the starburst nucleus of NGC 253
• Detection of Gamma-rays around 1TeV from RX J0852.0-4622 by CANGAROO-II
• A Search for TeV Gamma-ray Emission from the PSR B1259-63/SS2883 Binary System with the CANGAROO-II 10-m Telescope
• A search for very high energy gamma-ray emission from the starburst galaxy NGC 253 with H.E.S.S
• Evidence of TeV gamma-ray emission from the nearby starburst galaxy NGC 253
• Erratum: Detection of diffuse TeV gamma-ray emission from the nearby starburst galaxy NGC 253
• Constraints on Cold Dark Matter in the Gamma-ray Halo of NGC 253
• Search for TeV gamma-rays from SN 1987A in 2001