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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| Veröffentlicht in: | Advances in Astronomy and Space Physics |
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| Datum: | 2013 |
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | Englisch |
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Головна астрономічна обсерваторія НАН України
2013
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/119422 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | 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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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862606300434661376 |
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| author | Chkheidze, N. Babyk, Iu. |
| author_facet | Chkheidze, N. Babyk, Iu. |
| 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. |
| collection | DSpace DC |
| container_title | Advances in Astronomy and Space Physics |
| 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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| first_indexed | 2025-11-28T13:37:57Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-119422 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 2227-1481 |
| language | English |
| last_indexed | 2025-11-28T13:37:57Z |
| publishDate | 2013 |
| publisher | Головна астрономічна обсерваторія НАН України |
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| spelling | 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 |
| spellingShingle | Nonthermal emission model of isolated X-ray pulsar RX J0420.0-5022 Chkheidze, N. Babyk, Iu. |
| title | 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_short | 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 |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/119422 |
| work_keys_str_mv | AT chkheidzen nonthermalemissionmodelofisolatedxraypulsarrxj042005022 AT babykiu nonthermalemissionmodelofisolatedxraypulsarrxj042005022 |