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http://hdl.handle.net/2445/99489
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DC Field | Value | Language |
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dc.contributor.author | Altamirano, Diego | - |
dc.contributor.author | Van der Klis, M. | - |
dc.contributor.author | Méndez, M. | - |
dc.contributor.author | Migliari, Simone | - |
dc.contributor.author | Jonker, P. G. | - |
dc.contributor.author | Tiengo, A. | - |
dc.contributor.author | Zhang, W. | - |
dc.date.accessioned | 2016-06-13T14:16:27Z | - |
dc.date.available | 2016-06-13T14:16:27Z | - |
dc.date.issued | 2005-11 | - |
dc.identifier.issn | 0004-637X | - |
dc.identifier.uri | http://hdl.handle.net/2445/99489 | - |
dc.description.abstract | We study the rapid X-ray time variability in all public data available from the Rossi X-Ray Timing Explorer Proportional Counter Array on the atoll source 4U 1820-30 in the low-luminosity island state. A total of ~46 ks of data were used. We compare the frequencies of the variability components of 4U 1820-30 with those in other atoll sources. These frequencies were previously found to follow a universal scheme of correlations. We find that 4U 1820-30 shows correlations that are shifted by factors of 1.13 ± 0.01 and 1.21 ± 0.02 with respect to those in other atoll sources. These shifts are similar to, but smaller than, the shift factor of ~1.45 previously reported for some accreting millisecond pulsars. Therefore, 4U 1820-30 is the first atoll source that shows no significant pulsations but has a significant shift in the frequency correlations compared with the other three nonpulsating atoll sources. | - |
dc.format.extent | 9 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Institute of Physics (IOP) | - |
dc.relation.isformatof | Reproducció del document publicat a: http://dx.doi.org/10.1086/447761 | - |
dc.relation.ispartof | Astrophysical Journal, 2005, vol. 633, num. 1, p. 358-366 | - |
dc.relation.uri | http://dx.doi.org/10.1086/447761 | - |
dc.rights | (c) American Astronomical Society, 2005 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Estels binaris de raigs X | - |
dc.subject.classification | Estels de neutrons | - |
dc.subject.classification | Astronomia de raigs X | - |
dc.subject.other | X-ray binaries | - |
dc.subject.other | Neutron stars | - |
dc.subject.other | X-ray astronomy | - |
dc.title | The Island State of the Atoll Source 4U 1820-30 | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 634037 | - |
dc.date.updated | 2016-06-13T14:16:32Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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634037.pdf | 851.18 kB | Adobe PDF | View/Open |
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