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titleSuperposition of cyclotron lines in accreting X-ray pulsars
Author(jpn)西村, 治
Author(eng)Nishimura, Osamu
Author Affiliation(jpn)長野工業高等専門学校
Author Affiliation(eng)Department of Electronics and Computer Science, Nagano National College of Technology
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 page232
End page233
Publication date2010-02-26
AbstractWe model cyclotron lines by calculating a superposition of the spectra of a number of the cyclotron lines emerging from different heights of lineforming regions with nonuniform density, temperature and magnetic field strength in each region. We found that a shallower and broader fundamental line associated with a deeper second harmonic line as observed in Vela X-1 and A0535+26 can be produced via the superposition of a large number of the cyclotron lines. Our simplified model succeeds in reproducing an asymmetric line profile, an anharmonic line ratio.
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
Keywordsstars: atmospheres - stars: magnetic fields - stars: neutron
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-09-008E

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