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Title: Fermi-LAT and WMAP Observations of the Puppis A Supernova Remnant

Abstract

In this paper, we report the detection of GeV γ-ray emission from the supernova remnant (SNR) Puppis A with the Fermi Gamma-Ray Space Telescope. Puppis A is among the faintest SNRs yet detected at GeV energies, with a luminosity of only 2.7 × 1034 (D/2.2 kpc)2 erg s-1 between 1 and 100 GeV. The γ-ray emission from the remnant is spatially extended, with a morphology matching that of the radio and X-ray emission, and is well described by a simple power law with an index of 2.1. We attempt to model the broadband spectral energy distribution (SED), from radio to γ-rays, using standard nonthermal emission mechanisms. To constrain the relativistic electron population we use 7 years of Wilkinson Microwave Anisotropy Probe data to extend the radio spectrum up to 93 GHz. Finally, both leptonic- and hadronic-dominated models can reproduce the nonthermal SED, requiring a total content of cosmic-ray electrons and protons accelerated in Puppis A of at least W CR ≈ (1-5) × 1049 erg.

Authors:
 [1];  [2];  [3];  [3];  [4];  [5]
  1. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  2. Max Planck Inst. for Nuclear Physics, Heidelberg (Germany); Heidelberg Univ. (Germany)
  3. Univ. of Bordeaux 1, Gradignan (France). Bordeaux-Gradignan Center of Nuclear Studies
  4. Alternative Energies and Atomic Energy Commission (CEA), Saclay (France). Astrophysics Service. CEA-IRFU/CNRS/Paris Diderot Univ. Lab. AIM
  5. Stanford Univ., CA (United States). Dept. of Physics. W. W. Hansen Experimental Physics Lab.; SLAC National Accelerator Lab., Menlo Park, CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE; National Aeronautic and Space Administration (NASA); European Union (EU)
Contributing Org.:
Fermi-LAT Collaboration
OSTI Identifier:
1356666
Grant/Contract Number:  
AC02-76SF00515; ERC-StG-259391
Resource Type:
Accepted Manuscript
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 759; Journal Issue: 2; Journal ID: ISSN 0004-637X
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; acceleration of particles; cosmic rays; ISM; non-thermal radiation mechanisms

Citation Formats

Hewitt, J. W., Grondin, M. -H., Lemoine-Goumard, M., Reposeur, T., Ballet, J., and Tanaka, T. Fermi-LAT and WMAP Observations of the Puppis A Supernova Remnant. United States: N. p., 2012. Web. doi:10.1088/0004-637X/759/2/89.
Hewitt, J. W., Grondin, M. -H., Lemoine-Goumard, M., Reposeur, T., Ballet, J., & Tanaka, T. Fermi-LAT and WMAP Observations of the Puppis A Supernova Remnant. United States. doi:10.1088/0004-637X/759/2/89.
Hewitt, J. W., Grondin, M. -H., Lemoine-Goumard, M., Reposeur, T., Ballet, J., and Tanaka, T. Mon . "Fermi-LAT and WMAP Observations of the Puppis A Supernova Remnant". United States. doi:10.1088/0004-637X/759/2/89. https://www.osti.gov/servlets/purl/1356666.
@article{osti_1356666,
title = {Fermi-LAT and WMAP Observations of the Puppis A Supernova Remnant},
author = {Hewitt, J. W. and Grondin, M. -H. and Lemoine-Goumard, M. and Reposeur, T. and Ballet, J. and Tanaka, T.},
abstractNote = {In this paper, we report the detection of GeV γ-ray emission from the supernova remnant (SNR) Puppis A with the Fermi Gamma-Ray Space Telescope. Puppis A is among the faintest SNRs yet detected at GeV energies, with a luminosity of only 2.7 × 1034 (D/2.2 kpc)2 erg s-1 between 1 and 100 GeV. The γ-ray emission from the remnant is spatially extended, with a morphology matching that of the radio and X-ray emission, and is well described by a simple power law with an index of 2.1. We attempt to model the broadband spectral energy distribution (SED), from radio to γ-rays, using standard nonthermal emission mechanisms. To constrain the relativistic electron population we use 7 years of Wilkinson Microwave Anisotropy Probe data to extend the radio spectrum up to 93 GHz. Finally, both leptonic- and hadronic-dominated models can reproduce the nonthermal SED, requiring a total content of cosmic-ray electrons and protons accelerated in Puppis A of at least W CR ≈ (1-5) × 1049 erg.},
doi = {10.1088/0004-637X/759/2/89},
journal = {Astrophysical Journal},
number = 2,
volume = 759,
place = {United States},
year = {2012},
month = {10}
}

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Cited by: 23 works
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