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titleStudy of the Spectral and Temporal Characteristics of X-ray Emission of the Gamma-ray Binary LS 5039 with Suzaku
Author(jpn)岸下, 徹一; 高橋, 忠幸; 田中, 孝明; 内山, 泰伸; 山岡, 和貴
Author(eng)Kishishita, Tetsuichi; Takahashi, Tadayuki; Tanaka, Takaaki; Uchiyama, Yasunobu; Yamaoka, Kazutaka; Dmitry, Khangulyan; Aharonian, Felix A.; Bosch-Ramon, Valenti; Hinton, Jim A.
Author Affiliation(jpn)宇宙航空研究開発機構宇宙科学研究本部; 宇宙航空研究開発機構宇宙科学研究本部; 青山学院大学理工学部物理・数理学科
Author Affiliation(eng)Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS)(JAXA); Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS)(JAXA); Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory; Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory; Graduate School of Science and Engineering, Aoyama Gakuin University; Max-Planck-Institut fur Kernphysic; Max-Planck-Institut fur Kernphysic; Max-Planck-Institut fur Kernphysic; School of Physics & Astronomy, University of Leeds
Issue Date2010-02-26
Publisher宇宙航空研究開発機構
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
VolumeJAXA-SP-09-008E
Start page52
End page53
Publication date2010-02-26
Languageeng
AbstractWe report on the results from Suzaku and previous X-ray observations on the galactic binary LS5039, a TeV gamma-ray emitting binary. The Suzaku observation which covered continuously more than one orbital period revealed strong X-ray flux modulation at the orbital period for the first time, with its close resemblance to the TeV gamma-ray light curve. The X-ray data up to 70keV measured with Suzaku are described by a hard power-law spectrum with a phase-dependent photon index which varies within GAMMA = 1.45 - 1.6. We also found that the modulation curves are surprisingly stable in 1999 - 2007. The long-term behavior of the non-thermal X-ray light curves over eight years favors that a scenario in which the radiation is related to an ultrarelativistic pulsar wind would be able to account for the stable clock-like X-ray/TeV gamma-ray behaviors.
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
KeywordsBinaries: close - X-ray binaries - stars: individual (LS 5039)
Document TypeConference Paper
JAXA Category特別資料
ISSN1349-113X
NCIDAA11984031
SHI-NOAA0064574020
Report NoJAXA-SP-09-008E
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/17313


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