Cyclotron Resonance Energies at a Low X-Ray Luminosity: A0535+262 Observed with Suzaku | Zendy

Y. Terada | Zendy; T. Mihara | Zendy; M. Nakajima | Zendy; M. Suzuki | Zendy; Naoki Isobe | Zendy; Kazuo Makishima | Zendy; H. Takahashi | Zendy; Teruaki Enoto | Zendy; M. Kokubun | Zendy; T. Kitaguchi | Zendy; Sachindra Naik | Zendy; Tadayasu Dotani | Zendy; F. Nagase | Zendy; T. Tanaka | Zendy; Shin Watanabe | Zendy; Shunji Kitamoto | Zendy; Keisuke Sudoh | Zendy; A. Yoshida | Zendy; Y. E. Nakagawa | Zendy; S. Sugita | Zendy; Takayoshi Kohmura | Zendy; Takayuki Kotani | Zendy; Daisuke Yonetoku | Zendy; L. Angelini | Zendy; J. Cottam | Zendy; K. Mukai | Zendy; R. L. Kelley | Zendy; Yang Soong | Zendy; M. W. Bautz | Zendy; S. Kissel | Zendy; J. Doty | Zendy

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Cyclotron Resonance Energies at a Low X-Ray Luminosity: A0535+262 Observed with Suzaku

Author(s) -

Y. Terada,

T. Mihara,

M. Nakajima,

M. Suzuki,

Naoki Isobe,

Kazuo Makishima,

H. Takahashi,

Teruaki Enoto,

M. Kokubun,

T. Kitaguchi,

Sachindra Naik,

Tadayasu Dotani,

F. Nagase,

T. Tanaka,

Shin Watanabe,

Shunji Kitamoto,

Keisuke Sudoh,

A. Yoshida,

Y. E. Nakagawa,

S. Sugita,

Takayoshi Kohmura,

Takayuki Kotani,

Daisuke Yonetoku,

L. Angelini,

J. Cottam,

K. Mukai,

R. L. Kelley,

Yang Soong,

M. W. Bautz,

S. Kissel,

J. Doty

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/508018

Subject(s) - physics , astrophysics , pulsar , luminosity , cyclotron resonance , observatory , resonance (particle physics) , astronomy , cyclotron , electron , nuclear physics , atomic physics , galaxy

The binary X-ray pulsar A0535+262 was observed with the Suzaku X-rayobservatory, on 2005 September 14 for a net exposure of 22 ksec. The source wasin a declining phase of a minor outburst, exhibiting 3--50 keV luminosity ofabout $3.7 \times 10^{35}$ ergs s$^{-1}$ at an assumed distance of 2 kpc. Inspite of the very low source intensity (about 30 mCrab at 20 keV), its electroncyclotron resonance was detected clearly with the Suzaku Hard X-ray Detector,in absorption at about 45 keV. The resonance energy is found to be essentiallythe same as those measured when the source is almost two orders of magnitudemore luminous. These results are compared with the luminosity-dependent changesin the cyclotron resonance energy, observed from 4U 0115+63 and X 0331+53.

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