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Thermal X-ray emission from hot polar cap in drifting subpulse pulsars |
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| Authors: | Janusz Gil George Melikidze Bing Zhang |
| Institution: | (1) Institute of Astronomy, University of Zielona Góra, Lubuska 2, 65-265 Zielona Góra, Poland;(2) Abastumani Astrophysical Observatory, Al. Kazbegi ave. 2a, 0160 Tbilisi, Georgia;(3) Physics University of Nevada Las Vegas, Las Vegas, NV, USA |
| Abstract: | Within the framework of the partially screened inner acceleration region the relationship between the X-ray luminosity and the circulational periodicity of drifting subpulses is derived. This relationship is quite well satisfied in pulsars for which an appropriate radio and X-ray measurements exist. A special case of PSR B0943+10 is presented and discussed. The problem of formation of a partially screened inner acceleration region for all pulsars with drifting subpulses is also considered. It is argued that an efficient inner acceleration region just above the polar cap can be formed in a very strong and curved non-dipolar surface magnetic field. We acknowledge the support of the Polish State Committee for scientific research under Grant P03D 029 26. G.M. was partially supported by Georgian NSF grant ST06/4-096. |
| Keywords: | Neutron stars Pulsars Radio emission X-ray |
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