| Possible hard X-ray shortages in bursts from KS 1731-260 and 4U 1705-44 (Research Note) | |
Ji L(纪龙) ; Zhang S(张澍); Chen YP(陈玉鹏); Ji, L; Zhang, S; Chen, YP; Zhang, SN; Kretschmar, P; Wang, JM; Li, J; Zhang SN(张双南); Wang JM(王建民); Li J(李剑)
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| 2014 | |
| Source Publication | ASTRONOMY & ASTROPHYSICS
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| ISSN | 0004-6361 |
| EISSN | 1432-0746 |
| Volume | 564Pages:A20 |
| Abstract | Aims. A hard X-ray shortage, implying the cooling of the corona, was observed during bursts of IGR J17473-272, 4U 1636-536, Aql X-1, and GS 1826-238. Apart from these four sources, we investigate here an atoll sample, in which the number of bursts for each source is larger than 5, to explore the possible additional hard X-ray shortage during Rossi X-ray timing explorer (RXTE) era. Methods. According to the source catalog that shows type-I bursts, we analyzed all the available pointing observations of these sources carried out by the RXTE proportional counter array. We grouped and combined the bursts according to their outburst states and searched for the possible hard X-ray shortage while bursting. Results. We found that the island states of KS 1731-260 and 4U 1705-44 show a hard X-ray shortage at significant levels of 4.5 and 4.7 sigma and a systematic time lag of 0.9 +/- 2.1 s and 2.5 +/- 2.0 s with respect to the soft X-rays, respectively. While in their banana branches and other sources, we did not find any consistent shortage. |
| Keyword | stars: coronae X-rays: binaries X-rays: bursts stars: neutron |
| Subject Area | Astronomy & Astrophysics |
| DOI | 10.1051/0004-6361/201322981 |
| Indexed By | SCI ; INSPIREHEP ; ADS |
| Language | 英语 |
| WOS ID | WOS:000334671000020 |
| ADS Bibcode | 2014A&A...564A..20J |
| ADS URL | https://ui.adsabs.harvard.edu/abs/2014A&A...564A..20J |
| ADS CITATIONS | https://ui.adsabs.harvard.edu/abs/2014A&A...564A..20J/citations |
| inspireid | 1281502 |
| inspireURL | https://inspirehep.net/literature/1281502 |
| Citation statistics |
Cited Times:12 [INSPIRE]
Cited Times:17 [ADS]
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| Document Type | 期刊论文 |
| Identifier | http://ir.ihep.ac.cn/handle/311005/224836 |
| Collection | 粒子天体物理中心 |
| Recommended Citation GB/T 7714 | Ji L,Zhang S,Chen YP,et al. Possible hard X-ray shortages in bursts from KS 1731-260 and 4U 1705-44 (Research Note)[J]. ASTRONOMY & ASTROPHYSICS,2014,564:A20. |
| APA | 纪龙.,张澍.,陈玉鹏.,Ji, L.,Zhang, S.,...&李剑.(2014).Possible hard X-ray shortages in bursts from KS 1731-260 and 4U 1705-44 (Research Note).ASTRONOMY & ASTROPHYSICS,564,A20. |
| MLA | 纪龙,et al."Possible hard X-ray shortages in bursts from KS 1731-260 and 4U 1705-44 (Research Note)".ASTRONOMY & ASTROPHYSICS 564(2014):A20. |
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