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

Details 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

Jan 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006adspr..38.2756n&link_type=abstract

Advances in Space Research, Volume 38, Issue 12, p. 2756-2758.

Physics

3

Scientific paper

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.

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