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A 0535+26 in the August/September 2005 outburst observed by RXTE and INTEGRAL

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A 0535+26 in the August/September 2005 outburst observed by RXTE and INTEGRAL

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dc.contributor.author Caballero, I.
dc.contributor.author Kretschmar, P.
dc.contributor.author Santangelo, A.
dc.contributor.author Staubert, R.
dc.contributor.author Klochkov, D.
dc.contributor.author Camero Arranz, Ascension
dc.contributor.author Ferrigno, C.
dc.contributor.author Finger, M.H.
dc.contributor.author Kreykenbohm, I.
dc.contributor.author McBride, V.A.
dc.contributor.author Pottschmidt, K.
dc.contributor.author Rothschild, R.E.
dc.contributor.author Schönherr, G.
dc.contributor.author Segreto, A.
dc.contributor.author Suchy, S.
dc.contributor.author Wilms, J.
dc.contributor.author Wilson, C.A.
dc.date.accessioned 2010-08-10T10:53:39Z
dc.date.available 2010-08-10T10:53:39Z
dc.date.issued 2007
dc.identifier.uri http://hdl.handle.net/10550/16810
dc.description.abstract Aims. In this Letter we present results fromINTEGRAL andRXTE observations of the spectral and timing behavior of the High Mass X-ray Binary A0535+26 during its August/September 2005 normal (type I) outburst with an average flux F(5−100) keV ~ 400 mCrab. The search for cyclotron resonance scattering features (fundamental and harmonic) is one major focus of the paper. Methods. Our analysis is based on data from INTEGRAL and RXTE Target of Opportunity Observations performed during the outburst. The pulse period is determined. X-ray pulse profiles in different energy ranges are analyzed. The broad band INTEGRAL and RXTE pulse phase averaged X-ray spectra are studied. The evolution of the fundamental cyclotron line at different luminosities is analyzed. Results. The pulse period P is measured to be 103.39315(5) s at MJD 53614.5137. Two absorption features are detected in the phase averaged spectra at E1 ~ 45 keV and E2 ~ 100 keV. These can be interpreted as the fundamental cyclotron resonance scattering feature and its first harmonic and therefore the magnetic field can be estimated to be B ~ 4 × 10^12 G. en
dc.language.iso en en
dc.relation http://www.aanda.org/articles/aa/pdf/2007/14/aa7032-06.pdf en
dc.source CABALLERO, I. ; Kretschmar, P. ; Santangelo, A. ; Staubert, R. ; Klochkov, D. ; Camero Arranz, Ascension ; Ferrigno, C. ; Finger, M.H. ; Kreykenbohm, I. ; McBride, V.A. ; Pottschmidt, K. ; Rothschild, R.E. ; Schönherr, G. ; Segreto, A. ; Suchy, S. ; Wilms, J. ; Wilson, C.A., 2007, A 0535+26 in the August/September 2005 outburst observed by RXTE and INTEGRAL, Astronomy and Astrophysics, vol. 465, no. 2, p. L21-L24 en
dc.subject X-rays ; binaries ; Stars ; Magnetic fields ; Individual Star ; A0535+26 en
dc.title A 0535+26 in the August/September 2005 outburst observed by RXTE and INTEGRAL en
dc.type info:eu-repo/semantics/article en
dc.type info:eu-repo/semantics/publishedVersion en
dc.subject.unesco UNESCO::ASTRONOMÍA Y ASTROFÍSICA en
dc.subject.unesco UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia en
dc.identifier.doi 10.1051/0004-6361:20067032 en
dc.description.private Camero Arranz, Ascension, Ascension.Camero@uv.es en
dc.identifier.idgrec 040372 en
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