The Return of the Bursts: Thermonuclear Flashes from Circinus X-1
We report the detection of 15 X-ray bursts with RXTE and Swift observations of the peculiar X-ray binary Circinus X-1 (Cir X-1) during its 2010 May X-ray re-brightening. These are the first X-ray bursts observed from the source after the initial discovery by Tennant and collaborators, 25 years ago....
| Asıl Yazarlar: | , , , , , , , , , , , , , , , , |
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| Diğer Yazarlar: | |
| Materyal Türü: | Makale |
| Dil: | en_US |
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IOP Publishing
2013
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| Online Erişim: | http://hdl.handle.net/1721.1/76229 https://orcid.org/0000-0001-8804-8946 |
| _version_ | 1826207386528907264 |
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| author | Linares, Manuel Alegret Homan, Jeroen Chakrabarty, Deepto Watts, A. Altamirano, D. Soleri, P. Degenaar, N. Yang, Y. Wijnands, R. Casella, P. Rea, N. Armas Padilla, M. Cavecchi, Y. Kalamkar, M. Kaur, R. Patruno, A. Klis, M. van der |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Linares, Manuel Alegret Homan, Jeroen Chakrabarty, Deepto Watts, A. Altamirano, D. Soleri, P. Degenaar, N. Yang, Y. Wijnands, R. Casella, P. Rea, N. Armas Padilla, M. Cavecchi, Y. Kalamkar, M. Kaur, R. Patruno, A. Klis, M. van der |
| author_sort | Linares, Manuel Alegret |
| collection | MIT |
| description | We report the detection of 15 X-ray bursts with RXTE and Swift observations of the peculiar X-ray binary Circinus X-1 (Cir X-1) during its 2010 May X-ray re-brightening. These are the first X-ray bursts observed from the source after the initial discovery by Tennant and collaborators, 25 years ago. By studying their spectral evolution, we firmly identify nine of the bursts as type I (thermonuclear) X-ray bursts. We obtain an arcsecond location of the bursts that confirms once and for all the identification of Cir X-1 as a type I X-ray burst source, and therefore as a low magnetic field accreting neutron star. The first five bursts observed by RXTE are weak and show approximately symmetric light curves, without detectable signs of cooling along the burst decay. We discuss their possible nature. Finally, we explore a scenario to explain why Cir X-1 shows thermonuclear bursts now but not in the past, when it was extensively observed and accreting at a similar rate. |
| first_indexed | 2024-09-23T13:49:12Z |
| format | Article |
| id | mit-1721.1/76229 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:49:12Z |
| publishDate | 2013 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/762292022-10-01T17:18:14Z The Return of the Bursts: Thermonuclear Flashes from Circinus X-1 Linares, Manuel Alegret Homan, Jeroen Chakrabarty, Deepto Watts, A. Altamirano, D. Soleri, P. Degenaar, N. Yang, Y. Wijnands, R. Casella, P. Rea, N. Armas Padilla, M. Cavecchi, Y. Kalamkar, M. Kaur, R. Patruno, A. Klis, M. van der Massachusetts Institute of Technology. Department of Physics MIT Kavli Institute for Astrophysics and Space Research Linares, Manuel Alegret Homan, Jeroen Chakrabarty, Deepto We report the detection of 15 X-ray bursts with RXTE and Swift observations of the peculiar X-ray binary Circinus X-1 (Cir X-1) during its 2010 May X-ray re-brightening. These are the first X-ray bursts observed from the source after the initial discovery by Tennant and collaborators, 25 years ago. By studying their spectral evolution, we firmly identify nine of the bursts as type I (thermonuclear) X-ray bursts. We obtain an arcsecond location of the bursts that confirms once and for all the identification of Cir X-1 as a type I X-ray burst source, and therefore as a low magnetic field accreting neutron star. The first five bursts observed by RXTE are weak and show approximately symmetric light curves, without detectable signs of cooling along the burst decay. We discuss their possible nature. Finally, we explore a scenario to explain why Cir X-1 shows thermonuclear bursts now but not in the past, when it was extensively observed and accreting at a similar rate. 2013-01-09T21:05:21Z 2013-01-09T21:05:21Z 2010-07 2010-06 Article http://purl.org/eprint/type/JournalArticle 2041-8205 2041-8213 http://hdl.handle.net/1721.1/76229 Linares, M. et al. “The Return of the Bursts: Thermonuclear Flashes from Circinus X-1.” The Astrophysical Journal 719.1 (2010): L84–L89. Web. 9 Jan. 2013. https://orcid.org/0000-0001-8804-8946 en_US http://dx.doi.org/10.1088/2041-8205/719/1/l84 Astrophysical Journal. Letters Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/ application/pdf IOP Publishing arXiv |
| spellingShingle | Linares, Manuel Alegret Homan, Jeroen Chakrabarty, Deepto Watts, A. Altamirano, D. Soleri, P. Degenaar, N. Yang, Y. Wijnands, R. Casella, P. Rea, N. Armas Padilla, M. Cavecchi, Y. Kalamkar, M. Kaur, R. Patruno, A. Klis, M. van der The Return of the Bursts: Thermonuclear Flashes from Circinus X-1 |
| title | The Return of the Bursts: Thermonuclear Flashes from Circinus X-1 |
| title_full | The Return of the Bursts: Thermonuclear Flashes from Circinus X-1 |
| title_fullStr | The Return of the Bursts: Thermonuclear Flashes from Circinus X-1 |
| title_full_unstemmed | The Return of the Bursts: Thermonuclear Flashes from Circinus X-1 |
| title_short | The Return of the Bursts: Thermonuclear Flashes from Circinus X-1 |
| title_sort | return of the bursts thermonuclear flashes from circinus x 1 |
| url | http://hdl.handle.net/1721.1/76229 https://orcid.org/0000-0001-8804-8946 |
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