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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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:	Date Event 20 July 2008 Published
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)

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