6 papers
Multi-epoch spectroscopy and XMM-Newton observations of RX J2115-58
Mark Cropper, Gavin Ramsay, Tom Marsh
We present phase resolved optical spectroscopy and X-ray light curves of the asynchronous polar RX J2115-58 as they change on the beat period.
The XMM-Newton-MSSL survey of Polars
Gavin Ramsay, Mark Cropper
The XMM-Newton-MSSL survey of polars is a snapshot survey of nearly 40 polars. We present the initial results, with an emphasis on the energy balance in these systems and the numbe…
XMM-Newton EPIC observations of Her X-1
G. Ramsay, S. Zane, M. A. Jimenez-Garate +2
We present spin-resolved X-ray data of the neutron star binary Her X-1. We find evidence that the Iron line at 6.4 keV originates from the same location as the blackbody X-ray comp…
RX J2115--5840: confirmation of a new near-synchronous polar
Gavin Ramsay, David A. H. Buckley, Mark Cropper +1
Following the suggestion of Schwope et al that the magnetic cataclysmic variable RX J2115-5840 maybe a near-synchronous polar, we obtained optical polarimetry of this system over a…
The optical counterpart of the double degenerate polar RX J1914+24
Gavin Ramsay, Mark Cropper, Keith Mason +1
Cropper et al 1998 presented X-ray observations of RX J1914+24 and claimed that the most likely interpretation of their data was that of a double degenerate Polar. Here we show the…
Continuum and line emission from post-shockc flows
Mark Cropper, Kinwah Wu, Gavin Ramsay
The post-shock flow in the accretion region of MCVs is considered to be a magnetically confined cooling flow. The X-ray spectrum from this hot plasma is emitted from a range of tem…