X-RAY AND OPTICAL OBSERVATIONS OF A 0535+26
文献类型：期刊论文
| 作者 | Camero-Arranz, A.1,2; Finger, M. H.1,2; Wilson-Hodge, C. A.2; Jenke, P.2; Steele, I.3; Coe, M. J.4; Gutierrez-Soto, J.5,6; Kretschmar, P.7; Caballero, I.8; Yan, J.9 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2012-07-20 |
| 卷号 | 754期号:1页码:20 |
| ISSN号 | 0004-637X |
| 关键词 | accretion, accretion disks pulsars: individual (A 0535+26) stars: emission-line, Be stars: neutron X-rays: binaries |
| 英文摘要 | We present recent contemporaneous X-ray and optical observations of the Be/X-ray binary system A 0535+26 with the Fermi/Gamma-ray Burst Monitor (GBM) and several ground-based observatories. These new observations are put into the context of the rich historical data (since similar to 1978) and discussed in terms of the neutron-star-Be-disk interaction. The Be circumstellar disk was exceptionally large just before the 2009 December giant outburst, which may explain the origin of the unusual recent X-ray activity of this source. We found a peculiar evolution of the pulse profile during this giant outburst, with the two main components evolving in opposite ways with energy. A hard 30-70 mHz X-ray quasi-periodic oscillation was detected with GBM during this 2009 December giant outburst. It becomes stronger with increasing energy and disappears at energies below 25 keV. In the long term a strong optical/X-ray correlation was found for this system, however in the medium term the H alpha equivalent width and the V-band brightness showed an anti-correlation after similar to 2002 August. Each giant X-ray outburst occurred during a decline phase of the optical brightness, while the H alpha showed a strong emission. In late 2010 and before the 2011 February outburst, rapid V/R variations are observed in the strength of the two peaks of the H alpha line. These had a period of similar to 25 days and we suggest the presence of a global one-armed oscillation to explain this scenario. A general pattern might be inferred, where the disk becomes weaker and shows V/R variability beginning similar to 6 months following a giant outburst. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | QUASI-PERIODIC OSCILLATIONS ; AUGUST/SEPTEMBER 2005 OUTBURST ; PULSAR SAX J1808.4-3658 ; BINARY 1A 0535+262 ; EQUATION-OF-STATE ; MILLISECOND PULSAR ; TIMING EXPLORER ; BURST MONITOR ; ACCRETION TORQUES ; GIANT OUTBURST |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000306111800020 |
| 公开日期 | 2013-01-31 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/8008]  |
| 专题 | 紫金山天文台_分子云与恒星形成研究团组 |
| 作者单位 | 1.Univ Space Res Assoc, Huntsville, AL 35806 USA 2.NASA, George C Marshall Space Flight Ctr, Space Sci Off, Huntsville, AL 35812 USA 3.Liverpool John Moores Univ, Liverpool L3 2AJ, Merseyside, England 4.Univ Southampton, Southampton SO17 1BJ, Hants, England 5.Inst Astrofis Andalucia, E-18008 Granada, Spain 6.Valencian Int Univ, Castellon De La Plana 12006, Spain 7.ESA ESAC, Madrid, Spain 8.AIM CEA Saclay, Paris, France 9.Chinese Acad Sci, Purple Mt Observ, Beijing, Peoples R China 10.Univ Valencia, Paterna 46980, Spain |
| 推荐引用方式 GB/T 7714 | Camero-Arranz, A.,Finger, M. H.,Wilson-Hodge, C. A.,et al. X-RAY AND OPTICAL OBSERVATIONS OF A 0535+26[J]. ASTROPHYSICAL JOURNAL,2012,754(1):20. |
| APA | Camero-Arranz, A..,Finger, M. H..,Wilson-Hodge, C. A..,Jenke, P..,Steele, I..,...&McBride, V. A..(2012).X-RAY AND OPTICAL OBSERVATIONS OF A 0535+26.ASTROPHYSICAL JOURNAL,754(1),20. |
| MLA | Camero-Arranz, A.,et al."X-RAY AND OPTICAL OBSERVATIONS OF A 0535+26".ASTROPHYSICAL JOURNAL 754.1(2012):20. |
入库方式： OAI收割
来源：紫金山天文台
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