Accretion disk parameters in HLX-1
| dc.contributor.author | Soria, Roberto | |
| dc.contributor.author | Hau, G. | |
| dc.date.accessioned | 2017-01-30T11:51:17Z | |
| dc.date.available | 2017-01-30T11:51:17Z | |
| dc.date.created | 2016-02-17T19:30:19Z | |
| dc.date.issued | 2012 | |
| dc.identifier.citation | Soria, R. and Hau, G. 2012. Accretion disk parameters in HLX-1. Proceedings of the International Astronomical Union. 8 (S290): pp. 78-81. | |
| dc.identifier.uri | http://hdl.handle.net/20.500.11937/15678 | |
| dc.identifier.doi | 10.1017/S1743921312019254 | |
| dc.description.abstract |
We estimate the outer radius of the accretion disk in HLX-1 from its optical brightness and from the exponential timescale of the decline in the X-ray lightcurve after an outburst. We find that the disk is an order of magnitude smaller than the semimajor axis of the orbit. If the disk size is determined by the circularization radius near periastron, the eccentricity of the binary system must be ? 0.95. We report on the discovery of Ha emission during the 2012 outburst, with a single-peaked, narrow profile (consistent with a nearly face-on view), and a central velocity displaced by ˜ 490 km s-1 from that of the host galaxy. © International Astronomical Union 2013. | |
| dc.title | Accretion disk parameters in HLX-1 | |
| dc.type | Conference Paper | |
| dcterms.source.volume | 8 | |
| dcterms.source.startPage | 78 | |
| dcterms.source.endPage | 81 | |
| dcterms.source.title | Proceedings of the International Astronomical Union | |
| dcterms.source.series | Proceedings of the International Astronomical Union | |
| dcterms.source.isbn | 9781107033795 | |
| curtin.department | Department of Physics and Astronomy | |
| curtin.accessStatus | Fulltext not available |
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