Infrared photometry and spectroscopy of the supersoft X-ray source RX J0019.8+2156 (= QR And)
Astronomy and Astrophysics 335:1 (1998)
Abstract:
We present JHK photometry and spectroscopy of RX J0019.8+2156. The spectrum appears to be dominated by the accretion disc to at least 2.4 μm, over any other source of emission. We find Paschen, Brackett and He II lines strongly in emission, but no He I. There are satellite lines approximately 850km s-1 either side of the strongest, unblended hydrogen lines. These satellite lines may be the spectral signature of jets from the accretion disc.The variable radio emission from GRS 1915 + 105
Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 292:4 (1997) 925-933
A deep search for radio emission from three X-ray pulsars: Are radio emission and X-ray pulsations anti-correlated?
European Space Agency, (Special Publication) ESA SP (1997) 303-306
Abstract:
We present results from a deep search for radio emission, from the X-ray pulsar systems GX 1+4, GS 0834-430 & 4U 0115+63 which have variously been suggested to possess radio jets and to be good candidates for propeller ejection mechanisms. None of these sources is detected at their optical positions, to 3σ limits of a few hundred μJy. This places upper limits on their radio luminosities and thus on the internal energy and numbers of any relativistic electrons which are three to four orders of magnitude below those of radio-bright X-ray binaries such as SS 433 & Cyg X-3. Spectral and structural information on the proposed 'radio lobes' of GX 1+4 make their association with the source unlikely. The lack of detected radio emission from any X-ray pulsar system is discussed statistically, and it is found that X-ray pulsations and radio emission from X-ray binaries are strongly anti-correlated.Rapid infrared flares in GRS 1915+105: evidence for infrared synchrotron emission
Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 290:4 (1997) l65-l69
Cygnus X-3 in outburst: quenched radio emission, radiation losses and variable local opacity
Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 288:4 (1997) 849-858