Luminosity dependent accretion state change in GRO J1008–57
In a former publication, we have analyzed the transient neutron star X-ray binary GRO J1008–57 using all available RXTE-, Swift-, and Suzaku-data. As we have found, the source’s spectral components, i.e., a power-law with high exponential cutoff and a black-body, are strongly correlated with the har...
| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2014-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20136406003 |
| _version_ | 1819349903456862208 |
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| author | Kühnel Matthias Müller Sebastian Kreykenbohm Ingo Fürst Felix Pottschmidt Katja Rothschild Richard E. Caballero Isabel Grinberg Victoria Schönherr Gabriele Shrader Chris Klochkov Dmitry Staubert Rüdiger Ferrigno Carlo Torrejón José-Miguel Martínez-Núñez Silvia Wilms Jörn |
| author_facet | Kühnel Matthias Müller Sebastian Kreykenbohm Ingo Fürst Felix Pottschmidt Katja Rothschild Richard E. Caballero Isabel Grinberg Victoria Schönherr Gabriele Shrader Chris Klochkov Dmitry Staubert Rüdiger Ferrigno Carlo Torrejón José-Miguel Martínez-Núñez Silvia Wilms Jörn |
| author_sort | Kühnel Matthias |
| collection | DOAJ |
| description | In a former publication, we have analyzed the transient neutron star X-ray binary GRO J1008–57 using all available RXTE-, Swift-, and Suzaku-data. As we have found, the source’s spectral components, i.e., a power-law with high exponential cutoff and a black-body, are strongly correlated with the hard X-ray flux (15–50 keV). We update the analytical description of these dependence, including a change in the photon index behaviour from a flat to a logarithmic function. The flux, where the change occurs, is consistent with the onset of the black-body emission. Thus, a change of the accretion state always occurs in GRO J1008–57 at a particular flux level. |
| first_indexed | 2024-12-24T19:07:55Z |
| format | Article |
| id | doaj.art-6268430fd3d6476c8d929c40dff272e5 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-24T19:07:55Z |
| publishDate | 2014-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-6268430fd3d6476c8d929c40dff272e52022-12-21T16:43:04ZengEDP SciencesEPJ Web of Conferences2100-014X2014-01-01640600310.1051/epjconf/20136406003epjconf_mag2013_06003Luminosity dependent accretion state change in GRO J1008–57Kühnel Matthias0Müller Sebastian1Kreykenbohm Ingo2Fürst Felix3Pottschmidt KatjaRothschild Richard E.4Caballero Isabel5Grinberg Victoria6Schönherr Gabriele7Shrader ChrisKlochkov Dmitry8Staubert Rüdiger9Ferrigno Carlo10Torrejón José-Miguel11Martínez-Núñez Silvia12Wilms Jörn13Dr. Karl Remeis-Observatory & ECAP, Universität Erlangen-NürnbergDr. Karl Remeis-Observatory & ECAP, Universität Erlangen-NürnbergDr. Karl Remeis-Observatory & ECAP, Universität Erlangen-NürnbergSpace Radiation Lab, California Institute of Technology, MC 290-17 CahillCenter for Astronomy and Space Sciences, University of CaliforniaCEA SaclayDr. Karl Remeis-Observatory & ECAP, Universität Erlangen-NürnbergLeibniz-Institut für Astrophysik PotsdamInstitut für Astronomie und Astrophysik, Universität TübingenInstitut für Astronomie und Astrophysik, Universität TübingenISDC Data Center for AstrophysicsInstituto de Física Aplicada a las Ciencias y las Tecnologías, Universidad de AlicanteInstituto de Física Aplicada a las Ciencias y las Tecnologías, Universidad de AlicanteDr. Karl Remeis-Observatory & ECAP, Universität Erlangen-NürnbergIn a former publication, we have analyzed the transient neutron star X-ray binary GRO J1008–57 using all available RXTE-, Swift-, and Suzaku-data. As we have found, the source’s spectral components, i.e., a power-law with high exponential cutoff and a black-body, are strongly correlated with the hard X-ray flux (15–50 keV). We update the analytical description of these dependence, including a change in the photon index behaviour from a flat to a logarithmic function. The flux, where the change occurs, is consistent with the onset of the black-body emission. Thus, a change of the accretion state always occurs in GRO J1008–57 at a particular flux level.http://dx.doi.org/10.1051/epjconf/20136406003 |
| spellingShingle | Kühnel Matthias Müller Sebastian Kreykenbohm Ingo Fürst Felix Pottschmidt Katja Rothschild Richard E. Caballero Isabel Grinberg Victoria Schönherr Gabriele Shrader Chris Klochkov Dmitry Staubert Rüdiger Ferrigno Carlo Torrejón José-Miguel Martínez-Núñez Silvia Wilms Jörn Luminosity dependent accretion state change in GRO J1008–57 EPJ Web of Conferences |
| title | Luminosity dependent accretion state change in GRO J1008–57 |
| title_full | Luminosity dependent accretion state change in GRO J1008–57 |
| title_fullStr | Luminosity dependent accretion state change in GRO J1008–57 |
| title_full_unstemmed | Luminosity dependent accretion state change in GRO J1008–57 |
| title_short | Luminosity dependent accretion state change in GRO J1008–57 |
| title_sort | luminosity dependent accretion state change in gro j1008 57 |
| url | http://dx.doi.org/10.1051/epjconf/20136406003 |
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