Nonthermal emission model of isolated X-ray pulsar RX J0420.0-5022
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Nonthermal emission model of isolated X-ray pulsar RX J0420.0-5022
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| Creator |
Chkheidze, N.
Babyk, Iu. |
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| Description |
In this paper, an alternative theoretical interpretation to the generally assumed thermal emission models of the observed X-ray spectrum of isolated pulsar RX J0420.0-5022 is presented. It is well-known that at a pulsar surface, the distribution function of relativistic particles is one-dimensional. However, cyclotron instability causes an appearance of transverse momenta of relativistic electrons, which as a result start to radiate in the synchrotron regime. On the basis of the Vlasov kinetic equation we study the process of quasi-linear difusion (QLD) developed by means of the cyclotron instability. This mechanism enables the generation optical and X-ray emissions on the light cylinder lengthscales. An analysis of the three archival XMM-Newton observations of RX J0420.0-5022, is performed. Considering a different approach to synchrotron emission theory, a spectral energy distribution was obtained, which was in a good agreement with the observational data. A fit to the X-ray spectrum was conducted using both the present synchrotron emission model spectrum absorbed by cold interstellar matter, as well as the generally assumed black-body absorption model.
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| Date |
2017-06-06T19:07:22Z
2017-06-06T19:07:22Z 2013 |
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| Type |
Article
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| Identifier |
Nonthermal emission model of isolated X-ray pulsar RX J0420.0-5022 / N. Chkheidze, Iu. Babyk // Advances in Astronomy and Space Physics. — 2013. — Т. 3., вип. 1. — С. 32-37. — Бібліогр.: 24 назв. — англ.
2227-1481 http://dspace.nbuv.gov.ua/handle/123456789/119422 |
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| Language |
en
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| Relation |
Advances in Astronomy and Space Physics
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| Publisher |
Головна астрономічна обсерваторія НАН України
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