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Detection of the Small Magellanic Cloud in gamma-rays with Fermi/LAT

The flux of gamma rays with energies 100MeV is dominated by diffuse emission from CRs illuminating the ISM of our Galaxy through the processes of Bremsstrahlung, pion production and decay, and inverse-Compton scattering. The study of this diffuse emission provides insight into the origin and transpo... Full description

Journal Title: Astronomy and Astrophysics - A&A November 2010, Vol.523, p.A46
Main Author: A. Abdo, A
Other Authors: Ackermann, Markus , Ajello, Marco , Baldini, Luca , Ballet, Jean , Barbiellini, Guido , Bastieri, D , Bechtol, K , Bellazzini, R , Berenji, B , D. Blandford, R , D. Bloom, E , Bonamente, E , W. Borgland, A , Bouvier, A , J. Brandt, T , Bregeon, J , Brez, A , Brigida, M , Bruel, Pascal
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0004-6361 ; E-ISSN: 1432-0746 ; DOI: 10.1051/0004-6361/201014855
Link: http://hal.in2p3.fr/in2p3-00585465
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recordid: hal_soai_HAL_in2p3_00585465v1
title: Detection of the Small Magellanic Cloud in gamma-rays with Fermi/LAT
format: Article
creator:
  • A. Abdo, A
  • Ackermann, Markus
  • Ajello, Marco
  • Baldini, Luca
  • Ballet, Jean
  • Barbiellini, Guido
  • Bastieri, D
  • Bechtol, K
  • Bellazzini, R
  • Berenji, B
  • D. Blandford, R
  • D. Bloom, E
  • Bonamente, E
  • W. Borgland, A
  • Bouvier, A
  • J. Brandt, T
  • Bregeon, J
  • Brez, A
  • Brigida, M
  • Bruel, Pascal
subjects:
  • Physics
  • Astrophysics
  • High Energy Astrophysical Phenomena
  • Sciences of the Universe
  • Astrophysics
  • High Energy Astrophysical Phenomena
  • Magellanic Clouds
  • Cosmic Rays
  • Gamma Rays: General
  • Acceleration of Particles
  • Astronomy & Astrophysics
  • Physics
ispartof: Astronomy and Astrophysics - A&A, November 2010, Vol.523, p.A46
description: The flux of gamma rays with energies 100MeV is dominated by diffuse emission from CRs illuminating the ISM of our Galaxy through the processes of Bremsstrahlung, pion production and decay, and inverse-Compton scattering. The study of this diffuse emission provides insight into the origin and transport of CRs. We searched for gamma-ray emission from the SMC in order to derive constraints on the CR population and transport in an external system with properties different from the Milky Way. We analysed the first 17 months of continuous all-sky observations by the Large Area Telescope of the Fermi mission to determine the spatial distribution, flux and spectrum of the gamma-ray emission from the SMC. We also used past radio synchrotron observations of the SMC to study the population of CR electrons specifically. We obtained the first detection of the SMC in high-energy gamma rays, with an integrated 100MeV flux of (3.7 +/-0.7) x10e-8 ph/cm2/s, with additional systematic...
language: eng
source:
identifier: ISSN: 0004-6361 ; E-ISSN: 1432-0746 ; DOI: 10.1051/0004-6361/201014855
fulltext: no_fulltext
issn:
  • 0004-6361
  • 00046361
  • 1432-0746
  • 14320746
url: Link


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titleDetection of the Small Magellanic Cloud in gamma-rays with Fermi/LAT
creatorA. Abdo, A ; Ackermann, Markus ; Ajello, Marco ; Baldini, Luca ; Ballet, Jean ; Barbiellini, Guido ; Bastieri, D ; Bechtol, K ; Bellazzini, R ; Berenji, B ; D. Blandford, R ; D. Bloom, E ; Bonamente, E ; W. Borgland, A ; Bouvier, A ; J. Brandt, T ; Bregeon, J ; Brez, A ; Brigida, M ; Bruel, Pascal
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ispartofAstronomy and Astrophysics - A&A, November 2010, Vol.523, p.A46
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subjectPhysics ; Astrophysics ; High Energy Astrophysical Phenomena ; Sciences of the Universe ; Astrophysics ; High Energy Astrophysical Phenomena ; Magellanic Clouds ; Cosmic Rays ; Gamma Rays: General ; Acceleration of Particles ; Astronomy & Astrophysics ; Physics
descriptionThe flux of gamma rays with energies 100MeV is dominated by diffuse emission from CRs illuminating the ISM of our Galaxy through the processes of Bremsstrahlung, pion production and decay, and inverse-Compton scattering. The study of this diffuse emission provides insight into the origin and transport of CRs. We searched for gamma-ray emission from the SMC in order to derive constraints on the CR population and transport in an external system with properties different from the Milky Way. We analysed the first 17 months of continuous all-sky observations by the Large Area Telescope of the Fermi mission to determine the spatial distribution, flux and spectrum of the gamma-ray emission from the SMC. We also used past radio synchrotron observations of the SMC to study the population of CR electrons specifically. We obtained the first detection of the SMC in high-energy gamma rays, with an integrated 100MeV flux of (3.7 +/-0.7) x10e-8 ph/cm2/s, with additional systematic...
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titleDetection of the Small Magellanic Cloud in gamma-rays with Fermi/LAT
description

The flux of gamma rays with energies >100MeV is dominated by diffuse emission from CRs illuminating the ISM of our Galaxy through the processes of Bremsstrahlung, pion production and decay, and inverse-Compton scattering. The study of this diffuse emission provides insight into the origin and transport of CRs. We searched for gamma-ray emission from the SMC in order to derive constraints on the CR population and transport in an external system with properties different from the Milky Way. We analysed the first 17 months of continuous all-sky observations by the Large Area Telescope of the Fermi mission to determine the spatial distribution, flux and spectrum of the gamma-ray emission from the SMC. We also used past radio synchrotron observations of the SMC to study the population of CR electrons specifically. We obtained the first detection of the SMC in high-energy gamma rays, with an integrated >100MeV flux of (3.7 +/-0.7) x10e-8 ph/cm2/s, with additional systematic...

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The flux of gamma rays with energies >100MeV is dominated by diffuse emission from CRs illuminating the ISM of our Galaxy through the processes of Bremsstrahlung, pion production and decay, and inverse-Compton scattering. The study of this diffuse emission provides insight into the origin and transport of CRs. We searched for gamma-ray emission from the SMC in order to derive constraints on the CR population and transport in an external system with properties different from the Milky Way. We analysed the first 17 months of continuous all-sky observations by the Large Area Telescope of the Fermi mission to determine the spatial distribution, flux and spectrum of the gamma-ray emission from the SMC. We also used past radio synchrotron observations of the SMC to study the population of CR electrons specifically. We obtained the first detection of the SMC in high-energy gamma rays, with an integrated >100MeV flux of (3.7 +/-0.7) x10e-8 ph/cm2/s, with additional systematic...

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