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Title: Detection of gamma-ray emission from the Starburst Galaxies M82 and NGC 253 with the Large Area Telescope on Fermi

Abstract

Here, we report the detection of high-energy γ-ray emission from two starburst galaxies using data obtained with the Large Area Telescope on board the Fermi Gamma-ray Space Telescope. Furthermore, we detected a steady point-like emission above 200 MeV at significance levels of 6.8σ and 4.8σ, respectively, from sources positionally coincident with locations of the starburst galaxies M82 and NGC 253. The total fluxes of the sources are consistent with γ-ray emission originating from the interaction of cosmic rays with local interstellar gas and radiation fields and constitute evidence for a link between massive star formation and γ-ray emission in star-forming galaxies.

Authors:
 [1]
  1. Naval Research Lab. (NRL), Washington, DC (United States); National Academy of Sciences, Washington, DC (United States); et al.
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
Fermi LAT Collaboration
OSTI Identifier:
1357585
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 709; Journal Issue: 2; Journal ID: ISSN 2041-8205
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; cosmic rays; galaxies: individual (M82, NGC 253); gamma rays: general; radiation mechanisms: non-thermal

Citation Formats

Abdo, A. A. Detection of gamma-ray emission from the Starburst Galaxies M82 and NGC 253 with the Large Area Telescope on Fermi. United States: N. p., 2010. Web. doi:10.1088/2041-8205/709/2/L152.
Abdo, A. A. Detection of gamma-ray emission from the Starburst Galaxies M82 and NGC 253 with the Large Area Telescope on Fermi. United States. doi:10.1088/2041-8205/709/2/L152.
Abdo, A. A. Thu . "Detection of gamma-ray emission from the Starburst Galaxies M82 and NGC 253 with the Large Area Telescope on Fermi". United States. doi:10.1088/2041-8205/709/2/L152. https://www.osti.gov/servlets/purl/1357585.
@article{osti_1357585,
title = {Detection of gamma-ray emission from the Starburst Galaxies M82 and NGC 253 with the Large Area Telescope on Fermi},
author = {Abdo, A. A.},
abstractNote = {Here, we report the detection of high-energy γ-ray emission from two starburst galaxies using data obtained with the Large Area Telescope on board the Fermi Gamma-ray Space Telescope. Furthermore, we detected a steady point-like emission above 200 MeV at significance levels of 6.8σ and 4.8σ, respectively, from sources positionally coincident with locations of the starburst galaxies M82 and NGC 253. The total fluxes of the sources are consistent with γ-ray emission originating from the interaction of cosmic rays with local interstellar gas and radiation fields and constitute evidence for a link between massive star formation and γ-ray emission in star-forming galaxies.},
doi = {10.1088/2041-8205/709/2/L152},
journal = {Astrophysical Journal Letters},
number = 2,
volume = 709,
place = {United States},
year = {2010},
month = {1}
}

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Free Publicly Available Full Text
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Cited by: 119 works
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