Back to Search Start Over

Study of the luminosity-dependent cyclotron resonance energies of the binary X-ray pulsar 4U 0115+63 with RXTE

Study of the luminosity-dependent cyclotron resonance energies of the binary X-ray pulsar 4U 0115+63 with RXTE

Authors :
Motoki Nakajima
Tatehiro Mihara
Kazuo Makishima
H. Niko
Source :
Advances in Space Research. 38:2756-2758
Publication Year :
2006
Publisher :
Elsevier BV, 2006.

Abstract

We report on the luminosity dependent change of the cyclotron resonance energy obtained from a transient X-ray pulsar, 4U 0115+63. Using RXTE data observed on 1999 March, we found that the fundamental resonance energy stayed constant (∼11 keV) when the source luminosity was above ∼5 × 1037 erg s−1. As the luminosity decreased below ∼5 × 1037 erg s−1, the fundamental resonance energy gradually increased up to ∼16 keV at 0.16 × 1037 erg s−1. The luminosity dependence of the resonance energy can be understood by the change of the accretion column height.

Details

ISSN :
02731177
Volume :
38
Database :
OpenAIRE
Journal :
Advances in Space Research
Accession number :
edsair.doi...........2ca9327d2e6fd0b101a0fbfc190d3e9a
Full Text :
https://doi.org/10.1016/j.asr.2005.09.049