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Article: Internal shock model for the X-ray flares of Swift J1644+57
| Title | Internal shock model for the X-ray flares of Swift J1644+57 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Authors | |||||||||||
| Keywords | Radiation mechanisms: non-thermal X-rays: general | ||||||||||
| Issue Date | 2012 | ||||||||||
| Publisher | Blackwell Publishing Ltd. The Journal's web site is located at http://www.oxfordjournals.org/our_journals/mnras/ | ||||||||||
| Citation | Monthly Notices Of The Royal Astronomical Society, 2012, v. 421 n. 1, p. 908-912 How to Cite? | ||||||||||
| Abstract | Swift J1644+57 is an unusual transient event, likely powered by the tidal disruption of a star by a massive black hole. Multiple short time-scale X-ray flares were seen over a span of several days. We propose that these flares could be produced by internal shocks. In the internal shock model, the forward and reverse shocks are produced by collisions between relativistic shells ejected from a central engine. The synchrotron emission from the forward and reverse shocks could dominate in two quite different energy bands; under some conditions, the relativistic reverse shock dominates the X-ray emission and the Newtonian forward shock dominates the infrared and optical emission. We show that the spectral energy distribution of Swift J1644+57 could be explained by an internal shock model. © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS. | ||||||||||
| Persistent Identifier | http://hdl.handle.net/10722/149125 | ||||||||||
| ISSN | 2023 Impact Factor: 4.7 2023 SCImago Journal Rankings: 1.621 | ||||||||||
| ISI Accession Number ID |
Funding Information: We thank the referee for detailed and very constructive suggestions that have allowed us to improve our manuscript. We also thank Drs Y. W. Yu and R. Li for useful discussion. KSC is supported by GRF Grants of the Government of the Hong Kong SAR under HKU 7011/10P. FYW is supported by the National Natural Science Foundation of China (grant no. 11103007), Jiangsu Planned Projects for Postdoctoral Research Funds 1002006B and China Postdoctoral Science Foundation funded projects (20100481117 and 201104521). | ||||||||||
| References |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Wang, FY | en_HK |
| dc.contributor.author | Cheng, KS | en_HK |
| dc.date.accessioned | 2012-06-22T06:24:53Z | - |
| dc.date.available | 2012-06-22T06:24:53Z | - |
| dc.date.issued | 2012 | en_HK |
| dc.identifier.citation | Monthly Notices Of The Royal Astronomical Society, 2012, v. 421 n. 1, p. 908-912 | en_HK |
| dc.identifier.issn | 0035-8711 | en_HK |
| dc.identifier.uri | http://hdl.handle.net/10722/149125 | - |
| dc.description.abstract | Swift J1644+57 is an unusual transient event, likely powered by the tidal disruption of a star by a massive black hole. Multiple short time-scale X-ray flares were seen over a span of several days. We propose that these flares could be produced by internal shocks. In the internal shock model, the forward and reverse shocks are produced by collisions between relativistic shells ejected from a central engine. The synchrotron emission from the forward and reverse shocks could dominate in two quite different energy bands; under some conditions, the relativistic reverse shock dominates the X-ray emission and the Newtonian forward shock dominates the infrared and optical emission. We show that the spectral energy distribution of Swift J1644+57 could be explained by an internal shock model. © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS. | en_HK |
| dc.language | eng | en_US |
| dc.publisher | Blackwell Publishing Ltd. The Journal's web site is located at http://www.oxfordjournals.org/our_journals/mnras/ | - |
| dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | en_HK |
| dc.rights | © 2012 The Authors. Monthly Notices of the Royal Astronomical Society © 2012 RAS. The definitive version is available at https://dx.doi.org/10.1111/j.1365-2966.2012.20392.x | - |
| dc.subject | Radiation mechanisms: non-thermal | en_HK |
| dc.subject | X-rays: general | en_HK |
| dc.title | Internal shock model for the X-ray flares of Swift J1644+57 | en_HK |
| dc.type | Article | en_HK |
| dc.identifier.email | Cheng, KS: hrspksc@hkucc.hku.hk | en_HK |
| dc.identifier.authority | Cheng, KS=rp00675 | en_HK |
| dc.description.nature | published_or_final_version | - |
| dc.identifier.doi | 10.1111/j.1365-2966.2012.20392.x | en_HK |
| dc.identifier.scopus | eid_2-s2.0-84862807349 | en_HK |
| dc.identifier.hkuros | 199936 | en_US |
| dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-84862807349&selection=ref&src=s&origin=recordpage | en_HK |
| dc.identifier.volume | 421 | en_HK |
| dc.identifier.issue | 1 | en_HK |
| dc.identifier.spage | 908 | en_HK |
| dc.identifier.epage | 912 | en_HK |
| dc.identifier.isi | WOS:000302693600103 | - |
| dc.publisher.place | United Kingdom | en_HK |
| dc.identifier.scopusauthorid | Wang, FY=19934457200 | en_HK |
| dc.identifier.scopusauthorid | Cheng, KS=9745798500 | en_HK |
| dc.identifier.issnl | 0035-8711 | - |