FERMI LARGE AREA TELESCOPE DISCOVERY OF GeV GAMMA-RAY EMISSION FROM THE VICINITY OF SNR W44
| dc.contributor.author | UCHIYAMA, Y. | |
| dc.contributor.author | FUNK, S. | |
| dc.contributor.author | KATAGIRI, H. | |
| dc.contributor.author | KATSUTA, J. | |
| hal.structure.identifier | GLAST | |
| dc.contributor.author | LEMOINE-GOUMARD, M. | |
| dc.contributor.author | TAJIMA, H. | |
| dc.contributor.author | TANAKA, T. | |
| dc.contributor.author | F. TORRES, D. | |
| dc.date.issued | 2012 | |
| dc.identifier.issn | 2041-8205 | |
| dc.description.abstractEn | We report the detection of GeV γ-ray emission from the molecular cloud complex that surrounds the supernova remnant (SNR) W44 using the Large Area Telescope on board Fermi. While the previously reported γ-ray emission from SNR W44 is likely to arise from the dense radio-emitting filaments within the remnant, the γ-ray emission that appears to come from the surrounding molecular cloud complex can be ascribed to the cosmic rays (CRs) that have escaped from W44. The non-detection of synchrotron radio emission associated with the molecular cloud complex suggests the decay of π0 mesons produced in hadronic collisions as the γ-ray emission mechanism. The total kinetic energy channeled into the escaping CRs is estimated to be Wesc ~ (0.3-3) × 1050 erg, in broad agreement with the conjecture that SNRs are the main sources of Galactic CRs. | |
| dc.language.iso | en | |
| dc.publisher | Bristol : IOP Publishing | |
| dc.subject.en | acceleration of particles | |
| dc.subject.en | cosmic rays | |
| dc.subject.en | ISM: supernova remnants | |
| dc.subject.en | radiation mechanisms: non-thermal | |
| dc.title.en | FERMI LARGE AREA TELESCOPE DISCOVERY OF GeV GAMMA-RAY EMISSION FROM THE VICINITY OF SNR W44 | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1088/2041-8205/749/2/L35 | |
| dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE] | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Phénomènes cosmiques de haute energie [astro-ph.HE] | |
| dc.identifier.arxiv | 1203.3234 | |
| bordeaux.journal | The Astrophysical journal letters | |
| bordeaux.page | L35 | |
| bordeaux.volume | 749 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | in2p3-00695269 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Non spécifiée | |
| hal.origin.link | https://hal.archives-ouvertes.fr//in2p3-00695269v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The%20Astrophysical%20journal%20letters&rft.date=2012&rft.volume=749&rft.spage=L35&rft.epage=L35&rft.eissn=2041-8205&rft.issn=2041-8205&rft.au=UCHIYAMA,%20Y.&FUNK,%20S.&KATAGIRI,%20H.&KATSUTA,%20J.&LEMOINE-GOUMARD,%20M.&rft.genre=article |
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