Nonthermal emission model of isolated X-ray pulsar RX J0420.0-5022
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....
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| Published in: | Advances in Astronomy and Space Physics |
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| Date: | 2013 |
| Main Authors: | , |
| Format: | Article |
| Language: | English |
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Головна астрономічна обсерваторія НАН України
2013
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/119422 |
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| Cite this: | 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. |
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Chkheidze, N. Babyk, Iu. 2017-06-06T19:07:22Z 2017-06-06T19:07:22Z 2013 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 https://nasplib.isofts.kiev.ua/handle/123456789/119422 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. The authors are grateful to Prof. George Machabeli for valuable discussions. The HEASARC online data archive at NASA/GSFC has been used extensively in this research. This research was supported by the Shota Rustaveli National Science Foundation grant (12/31). en Головна астрономічна обсерваторія НАН України Advances in Astronomy and Space Physics Nonthermal emission model of isolated X-ray pulsar RX J0420.0-5022 Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Nonthermal emission model of isolated X-ray pulsar RX J0420.0-5022 |
| spellingShingle |
Nonthermal emission model of isolated X-ray pulsar RX J0420.0-5022 Chkheidze, N. Babyk, Iu. |
| title_short |
Nonthermal emission model of isolated X-ray pulsar RX J0420.0-5022 |
| title_full |
Nonthermal emission model of isolated X-ray pulsar RX J0420.0-5022 |
| title_fullStr |
Nonthermal emission model of isolated X-ray pulsar RX J0420.0-5022 |
| title_full_unstemmed |
Nonthermal emission model of isolated X-ray pulsar RX J0420.0-5022 |
| title_sort |
nonthermal emission model of isolated x-ray pulsar rx j0420.0-5022 |
| author |
Chkheidze, N. Babyk, Iu. |
| author_facet |
Chkheidze, N. Babyk, Iu. |
| publishDate |
2013 |
| language |
English |
| container_title |
Advances in Astronomy and Space Physics |
| publisher |
Головна астрономічна обсерваторія НАН України |
| format |
Article |
| 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.
|
| issn |
2227-1481 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/119422 |
| citation_txt |
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. |
| work_keys_str_mv |
AT chkheidzen nonthermalemissionmodelofisolatedxraypulsarrxj042005022 AT babykiu nonthermalemissionmodelofisolatedxraypulsarrxj042005022 |
| first_indexed |
2025-11-28T13:37:57Z |
| last_indexed |
2025-11-28T13:37:57Z |
| _version_ |
1850853733164908544 |