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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 ISSN 2041-8205.

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Official URL: http://iopscience.iop.org/1538-4357/682/1/L45/

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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, Engineering and Medicine > 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:
DateEvent
20 July 2008Published
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 (Creative Commons)
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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