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A massive binary black-hole system in OJ287 and a test of general relativity
M. J. Valtonen, H. J. Lehto, K. Nilsson +23
Tests of Einstein's general theory of relativity have mostly been carried out in weak gravitational fields where the space-time curvature effects are first-order deviations from Ne…
Photometry and astrometry of SS Leo Minoris during the 2006 October superoutburst
Jeremy Shears, David Boyd, Tom Krajci +3
We report unfiltered CCD observations of the first confirmed superoutburst of the SU UMa-type dwarf nova SS LMi in October 2006. From a quiescent magnitude of around 21.7 it rose t…
Photometry of the dwarf nova AW Sagittae during the 2006 November superoutburst
Jeremy Shears, Roger Pickard, Tom Krajci +1
During 2006 November an outburst of the dwarf nova AW Sge was observed using CCD photometry. This revealed 0.25 magnitude superhumps confirming it to be a superoutburst, possibly o…
Analysis of the first confirmed superoutburst of V337 Cygni in 2006 May
David Boyd, Tom Krajci, Jeremy Shears +1
During 2006 May the first confirmed superoutburst of the dwarf nova V337 Cygni was observed using unfiltered CCD photometry. The outburst reached a peak magnitude of 15.2 on May 22…
HR Lyrae (Nova Lyr 1919): from outburst to active quiescence
Jeremy Shears, Gary Poyner
Nova Lyrae was discovered at the Harvard College Observatory on 1919 December 6 at magnitude 6.5. We present a lightcurve for this nova based on published and archival observations…
CG Draconis, a particularly active dwarf nova
Jeremy Shears, Roger Pickard, Gary Poyner
The dwarf nova CG Dra was intensively monitored during 2005 as part of the Variable Star Sections Recurrent Objects Programme and seven outbursts were detected. These observations…