PMO OpenIR  > 分子云与恒星形成研究团组
X-RAY AND OPTICAL OBSERVATIONS OF A 0535+26
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; Rodriguez, J.8; Suso, J.10; Case, G.11; Cherry, M. L.11; Guiriec, S.12; McBride, V. A.4
2012-07-20
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume754Issue:1Pages:20
AbstractWe 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.
KeywordAccretion, Accretion Disks Pulsars: Individual (a 0535+26) Stars: Emission-line, Be Stars: Neutron X-rays: Binaries
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/754/1/20
WOS KeywordQUASI-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
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000306111800020
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8008
Collection分子云与恒星形成研究团组
Affiliation1.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
11.Louisiana State Univ, Baton Rouge, LA 70803 USA
12.NASA GSFC, Greenbelt, MD 20771 USA
Recommended Citation
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.
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