Galactic Gamma-Ray Halo of the Nearby Starburst Galaxy NGC 253

Abstract

Recently, the CANGAROO-II telescope detected diffuse TeV gamma-ray emission from a nearby edge-on starburst galaxy, NGC 253. The emission mechanism is discussed in this report. We review the emissions of radio-to-TeV gamma-rays from NGC 253, and present a model of the non-thermal emissions due to synchrotron radiations and inverse Compton scatterings. A halo model successfully explains the multiband spectrum of NGC 253.

arXiv comment11 pages, 1 figure. submitted to ApJL

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Cited by in corpus (6)

• CHANDRA/VLA Follow-up of TeV J2032+4131, the Only Unidentified TeV Gamma-ray Source
• Extragalactic Sources of TeV Gamma Rays: A Summary
• 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