Probing the Accretion Processes in Soft X-Ray Selected Polars
High-energy data of accreting white dwarfs give access to the regime of the primary accretion-induced energy release and the different proposed accretion scenarios. We perform XMM-Newton observations of polars selected due to their ROSAT hardness ratios close to -1.0 and model the emission processes...
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| Format: | Article |
| Language: | English |
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Czech Technical University in Prague
2015-02-01
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| Series: | Acta Polytechnica CTU Proceedings |
| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/2836 |
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| author | I. Traulsen K. Reinsch A. D. Schwope |
| author_facet | I. Traulsen K. Reinsch A. D. Schwope |
| author_sort | I. Traulsen |
| collection | DOAJ |
| description | High-energy data of accreting white dwarfs give access to the regime of the primary accretion-induced energy release and the different proposed accretion scenarios. We perform XMM-Newton observations of polars selected due to their ROSAT hardness ratios close to -1.0 and model the emission processes in accretion column and accretion region. Our models consider the multi-temperature structure of the emission regions and are mainly determined by mass-flow density, magnetic field strength, and white-dwarf mass. To describe the full spectral energy distribution from infrared to X-rays in a physically consistent way, we include the stellar contributions and establish composite models, which will also be of relevance for future X-ray missions. We confirm the X-ray soft nature of three polars. |
| format | Article |
| id | doaj-art-e068a7fa17e345ebaa7e144a852d2820 |
| institution | Kabale University |
| issn | 2336-5382 |
| language | English |
| publishDate | 2015-02-01 |
| publisher | Czech Technical University in Prague |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj-art-e068a7fa17e345ebaa7e144a852d28202025-08-20T03:39:25ZengCzech Technical University in PragueActa Polytechnica CTU Proceedings2336-53822015-02-0121768010.14311/APP.2015.02.00762604Probing the Accretion Processes in Soft X-Ray Selected PolarsI. Traulsen0K. Reinsch1A. D. Schwope2Leibniz-Institut f¨ur Astrophysik Potsdam (AIP), An der Sternwarte 16, 14482 Potsdam, GermanyInstitut fur Astrophysik, Georg-August-Universitat Gottingen, Friedrich-Hund-Platz 1, 37077 Gottingen, GermanyLeibniz-Institut f¨ur Astrophysik Potsdam (AIP), An der Sternwarte 16, 14482 Potsdam, GermanyHigh-energy data of accreting white dwarfs give access to the regime of the primary accretion-induced energy release and the different proposed accretion scenarios. We perform XMM-Newton observations of polars selected due to their ROSAT hardness ratios close to -1.0 and model the emission processes in accretion column and accretion region. Our models consider the multi-temperature structure of the emission regions and are mainly determined by mass-flow density, magnetic field strength, and white-dwarf mass. To describe the full spectral energy distribution from infrared to X-rays in a physically consistent way, we include the stellar contributions and establish composite models, which will also be of relevance for future X-ray missions. We confirm the X-ray soft nature of three polars.https://ojs.cvut.cz/ojs/index.php/APP/article/view/2836 |
| spellingShingle | I. Traulsen K. Reinsch A. D. Schwope Probing the Accretion Processes in Soft X-Ray Selected Polars Acta Polytechnica CTU Proceedings |
| title | Probing the Accretion Processes in Soft X-Ray Selected Polars |
| title_full | Probing the Accretion Processes in Soft X-Ray Selected Polars |
| title_fullStr | Probing the Accretion Processes in Soft X-Ray Selected Polars |
| title_full_unstemmed | Probing the Accretion Processes in Soft X-Ray Selected Polars |
| title_short | Probing the Accretion Processes in Soft X-Ray Selected Polars |
| title_sort | probing the accretion processes in soft x ray selected polars |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/2836 |
| work_keys_str_mv | AT itraulsen probingtheaccretionprocessesinsoftxrayselectedpolars AT kreinsch probingtheaccretionprocessesinsoftxrayselectedpolars AT adschwope probingtheaccretionprocessesinsoftxrayselectedpolars |