122 citations · 3.4k across the 145 of their papers we have counts for
9 papers · 1 filter
A study of Jupiter's aurorae with XMM-Newton
G. Branduardi-Raymont, A. Bhardwaj, R. F. Elsner +6
We present a detailed analysis of Jupiter's X-ray (0.2-10 keV) auroral emissions as observed by XMM-Newton in Nov. 2003 and compare it with that of an Apr. 2003 observation. We dis…
SDSS J0926+3624, the first eclipsing AM CVn star, as seen by ULTRACAM
T. R. Marsh, V. S. Dhillon, S. Littlefair +6
We present light curves of SDSS J0926+3624, the first eclipsing AM CVn star, observed with the high-speed CCD camera ULTRACAM on the WHT. We find unusually that the accreting white…
Recent observational progress in AM CVn binaries
G. Ramsay, C. Brocksopp, P. Groot +9
We present the results of some recent research on AM CVn systems. We present: X-ray/UV observations made using XMM-Newton; the X-ray grating spectrum of RX J1914+24; preliminary re…
Latest results on Jovian disk X-rays from XMM-Newton
G. Branduardi-Raymont, A. Bhardwaj, R. F. Elsner +6
We present the results of a spectral study of the soft X-ray emission (0.2-2.5 keV) from low-latitude (`disk') regions of Jupiter. The data were obtained during two observing campa…
A search for stellar X-ray sourcesin the Sagittarius and Carina dwarf galaxies - I: X-ray observations
G. Ramsay, K. Wu
ROSAT observations found no convincing evidence for X-ray sources located in local dwarf spheroidal galaxies (dSph). Now with more sensitive instruments on board Chandra and XMM-Ne…
Multi-band Astronomy with LISA
G. Branduardi-Raymont, G. Ramsay, C. Wang +2
We discuss astrophysical scenarios relevant to the generation of gravitational waves (GW) and effects expected to arise from the interaction of GW and electromagnetic (EM) radiatio…
XMM-Newton observations of AM CVn binaries: V396 Hya & SDSS J1240-01
Gavin Ramsay, Paul J. Groot, Tom Marsh +3
We present the results of XMM-Newton observations of two AM CVn systems - V396 Hya and SDSS J1240-01. Both systems are detected in X-rays and in the UV: neither shows coherent vari…
RApid Temporal Survey - RATS II: Followup observations of 4 newly discovered short period variables
Gavin Ramsay, Ralf Napiwotzki, Pasi Hakala +1
The RApid Temporal Survey (RATS) is a survey to detect objects whose optical intensity varies on timescales of less than ~70 min. In our pilot dataset taken with the INT and the Wi…
XMM-Newton and Chandra observations of the ultra-compact binary RX J1914+24
Gavin Ramsay, Mark Cropper, Pasi Hakala
The nature of the X-ray source RX J1914+24 has been the subject of much debate. It shows a prominent period of 569 sec in X-rays and the optical/infra-red: in most models this has…