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- Publisher Website: 10.3847/0004-637X/827/1/41
- Scopus: eid_2-s2.0-84982273311
- WOS: WOS:000382009500041
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Article: Studying the SGR 1806-20/Cl* 1806-20 Region Using the Fermi Large Area Telescope
Title | Studying the SGR 1806-20/Cl* 1806-20 Region Using the Fermi Large Area Telescope |
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Authors | |
Keywords | cosmic rays ISM: individual objects (SNR G9.7-0.0, HESS J1808-204, W31) pulsars: individual (SGR 1806-20) stars: magnetars |
Issue Date | 2016 |
Publisher | IOP Publishing. The Journal's web site is located at http://iopscience.iop.org/0004-637X/ |
Citation | The Astrophysical Journal, 2016, v. 827 n. 1, p. 41:1-8 How to Cite? |
Abstract | The region around SGR 1806-20 and its host stellar cluster Cl* 1806-20 is a potentially important site of particle acceleration. The soft γ-ray repeater and Cl* 1806-20, which also contains several very massive stars including a luminous blue variable hypergiant LBV 1806-20, are capable of depositing a large amount of energy to the surroundings. Using the data taken with the Fermi Large Area Telescope (LAT), we identified an extended LAT source to the southwest of Cl* 1806-20. The centroid of the 1–50 GeV emission is consistent with that of HESS J1808-204 (until now unidentified). The LAT spectrum is best-fit by a broken power law with the break energy {E}{{b}}=297+/- 15 {MeV}. The index above E b is 2.60 ± 0.04 and is consistent with the flux and spectral index above 100 GeV for HESS J1808-204, suggesting an association between the two sources. Meanwhile, the interacting supernova remnant SNR G9.7-0.0 is also a potential contributor to the LAT flux. A tentative flux enhancement at the MeV band during a 45 day interval (2011 January 21–March 7) is also reported. We discuss possible origins of the extended LAT source in the context of both leptonic and hadronic scenarios. |
Persistent Identifier | http://hdl.handle.net/10722/229400 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Yeung, KH | - |
dc.contributor.author | Kong, AKH | - |
dc.contributor.author | Tam, PH | - |
dc.contributor.author | Lin, LCC | - |
dc.contributor.author | Hui, CY | - |
dc.contributor.author | Hu, CP | - |
dc.contributor.author | Cheng, KS | - |
dc.date.accessioned | 2016-08-23T14:10:55Z | - |
dc.date.available | 2016-08-23T14:10:55Z | - |
dc.date.issued | 2016 | - |
dc.identifier.citation | The Astrophysical Journal, 2016, v. 827 n. 1, p. 41:1-8 | - |
dc.identifier.uri | http://hdl.handle.net/10722/229400 | - |
dc.description.abstract | The region around SGR 1806-20 and its host stellar cluster Cl* 1806-20 is a potentially important site of particle acceleration. The soft γ-ray repeater and Cl* 1806-20, which also contains several very massive stars including a luminous blue variable hypergiant LBV 1806-20, are capable of depositing a large amount of energy to the surroundings. Using the data taken with the Fermi Large Area Telescope (LAT), we identified an extended LAT source to the southwest of Cl* 1806-20. The centroid of the 1–50 GeV emission is consistent with that of HESS J1808-204 (until now unidentified). The LAT spectrum is best-fit by a broken power law with the break energy {E}{{b}}=297+/- 15 {MeV}. The index above E b is 2.60 ± 0.04 and is consistent with the flux and spectral index above 100 GeV for HESS J1808-204, suggesting an association between the two sources. Meanwhile, the interacting supernova remnant SNR G9.7-0.0 is also a potential contributor to the LAT flux. A tentative flux enhancement at the MeV band during a 45 day interval (2011 January 21–March 7) is also reported. We discuss possible origins of the extended LAT source in the context of both leptonic and hadronic scenarios. | - |
dc.language | eng | - |
dc.publisher | IOP Publishing. The Journal's web site is located at http://iopscience.iop.org/0004-637X/ | - |
dc.relation.ispartof | The Astrophysical Journal | - |
dc.subject | cosmic rays | - |
dc.subject | ISM: individual objects (SNR G9.7-0.0, HESS J1808-204, W31) | - |
dc.subject | pulsars: individual (SGR 1806-20) | - |
dc.subject | stars: magnetars | - |
dc.title | Studying the SGR 1806-20/Cl* 1806-20 Region Using the Fermi Large Area Telescope | - |
dc.type | Article | - |
dc.identifier.email | Hu, CP: cphu@hku.hk | - |
dc.identifier.email | Cheng, KS: hrspksc@hkucc.hku.hk | - |
dc.identifier.authority | Cheng, KS=rp00675 | - |
dc.identifier.doi | 10.3847/0004-637X/827/1/41 | - |
dc.identifier.scopus | eid_2-s2.0-84982273311 | - |
dc.identifier.hkuros | 262650 | - |
dc.identifier.volume | 827 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | 41:1 | - |
dc.identifier.epage | 8 | - |
dc.identifier.eissn | 1538-4357 | - |
dc.identifier.isi | WOS:000382009500041 | - |
dc.identifier.issnl | 0004-637X | - |