JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
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title21st century observation of AX J1745.6-2901 and GRS 1741.9-2853 in the Galactic Center
Author(eng)Sakano, Masaaki; Warwick, Robert S.; Trap, Guillaume; Goldwurm, Andrea; Porquet, Delphine; Grosso, Nicolas
Author Affiliation(eng)Department of Physics and Astronomy, University of Leicester; Department of Physics and Astronomy, University of Leicester; Service d'Astriphysique(SAp), IRFU; Service d'Astriphysique(SAp), IRFU; Observatoire astronomique de Strasbourg, Universite de Strasbourg; Observatoire astronomique de Strasbourg, Universite de Strasbourg
Issue Date2010-02-26
Japan Aerospace Exploration Agency (JAXA)
Publication title宇宙航空研究開発機構特別資料:
JAXA Special Publication: The Energetic Cosmos; from Suzaku to ASTRO-H
Start page272
End page273
Publication date2010-02-26
AbstractWe here present the results of the X-ray observations of two X-ray binaries, an eclipsing X-ray burster AX J1754.6-2901 and a recurrent X-ray burster GRS 1741.9-2853, in the Galactic Centre Region, conducted with XMM-Newton, Swift and INTEGRAL. We have detected AX J1745.6-2901 with XMM-Newton in its outburst in 2007, identifying seven eclipses with the period of 8.4 hours, as well as one-type-I X-ray burst. We have also found pseudo-periodical dipping natures in the light curve roughly 4000 seconds prior to each eclipse, though seen only in 5 cases out of 7 eclipses. Based on the spectral and timing natures, we conclude that those dips are likely to be caused with lumps of materials with each seize of < 10(exp 8) metres at the inner edge of the accretion disk. From GRS 1741.9-2853 we have detected 15 type-I bursts in total, during its outburst with the luminosity of 10(exp 36) to 10(exp 37) erg s(sup -1) , while we detected no burst during its quiescent state for 2.8 Ms exposure with INTEGRAL. The characteristics of the observed bursts suggest pure helium explosion
DescriptionMeeting Information: The 3rd Suzaku international Conference "Energetic Cosmos : from Suzaku to ASTRO-H" (June 29-July 2, 2009. Grand Park Otaru Hotel), Otaru, Hokkaido Japan
Meeting sponsors: The University of Tokyo, The Institute of Physical and Chemical Research, The Japan Society for the Promotion of Science
KeywordsX-ray: sources - X-ray: binaries - Eclipse
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-09-008E

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