SIMBAD references

2006ApJ...648L.139T - Astrophys. J., 648, L139-L142 (2006/September-2)

Cyclotron resonance energies at a low X-ray luminosity: A0535+262 observed with Suzaku.

TERADA Y., MIHARA T., NAKAJIMA M., SUZUKI M., ISOBE N., MAKISHIMA K., TAKAHASHI H., ENOTO T., KOKUBUN M., KITAGUCHI T., NAIK S., DOTANI T., NAGASE F., TANAKA T., WATANABE S., KITAMOTO S., SUDOH K., YOSHIDA A., NAKAGAWA Y., SUGITA S., KOHMURA T., KOTANI T., YONETOKU D., ANGELINI L., COTTAM J., MUKAI K., KELLEY R., SOONG Y., BAUTZ M., KISSEL S. and DOTY J.

Abstract (from CDS):

The binary X-ray pulsar A0535+262 was observed with the Suzaku X-ray observatory on 2005 September 14 for a net exposure of 22 ks. The source was in the declining phase of a minor outburst, exhibiting 3-50 keV luminosity of ∼3.7x1035 ergs/s at an assumed distance of 2 kpc. In spite of the very low source intensity (about 30 mcrab at 20 keV), its electron cyclotron resonance was detected clearly with the Suzaku Hard X-Ray Detector, in absorption at about 45 keV. The resonance energy is found to be essentially the same as that measured when the source is almost 2 orders of magnitude more luminous. These results are compared with the luminosity-dependent changes in the cyclotron resonance energy, observed from 4U 0115+63 and X0331+53.

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Journal keyword(s): Magnetic Fields - Stars: Pulsars: Individual: Alphanumeric: A0535+26 - Stars: Neutron - X-Rays: Binaries

Simbad objects: 5

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