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SWIFT J1753.5-0127 : a surprising optical/X-ray cross-correlation function
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Durant, M., Gandhi, P., Shahbaz, Tariq, Fabian, A. C., Miller, J., Dhillon, V. S. and Marsh, T. R. (2008) SWIFT J1753.5-0127 : a surprising optical/X-ray cross-correlation function. Astrophysical Journal Letters, Volume 682 (Number 1). L45-L48. doi:10.1086/590906
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Official URL: http://iopscience.iop.org/1538-4357/682/1/L45/
Abstract
We have conducted simultaneous optical and X-ray observations of SWIFT J1753.5-0127 with RXTE and ULTRACAM, while the system persisted in its relatively bright low/hard state. In the cross-correlation function, we find that the optical emission, with a broad negative peak, leads the X-ray emission by a few seconds and has a smaller positive peak at positive lags. This is markedly different from what was seen for the similarly interesting system XTE J1118+480, and it is the first time that such a correlation function has been so clearly measured. We suggest a physical scenario for its origin.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy | ||||
| Divisions: | Faculty of Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Double stars -- Spectra, X-ray spectroscopy, Emission spectroscopy | ||||
| Journal or Publication Title: | Astrophysical Journal Letters | ||||
| Publisher: | IOP Publishing Ltd | ||||
| ISSN: | 2041-8205 | ||||
| Official Date: | 20 July 2008 | ||||
| Dates: |
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| Volume: | Volume 682 | ||||
| Number: | Number 1 | ||||
| Number of Pages: | 4 | ||||
| Page Range: | L45-L48 | ||||
| DOI: | 10.1086/590906 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Open Access | ||||
| Funder: | Spain. Ministerio de Ciencia e Innovación (MICINN), Nihon Gakujutsu Shinkōkai [Japan Society for the Promotion of Science] (NGS), Science and Technology Facilities Council (Great Britain) (STFC), Spain. Ministerio de Educación y Ciencia (MEC) | ||||
| Grant number: | CSD2006-00070 (MEC) |
Data sourced from Thomson Reuters' Web of Knowledge
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