Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Ogley, R. N."'
Autor:
Ogley, R. N., Chaty, S., Crocker, M., Eyres, S. P. S., Kenworthy, M. A., Richards, A. M. S., Rodriguez, L. F., Stirling, A. M.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 330 (2002) 772
We have made a deep search for radio emission from all the northern hemisphere supersoft X-ray sources using the VLA and MERLIN telescopes, at 5 and 8.4 GHz. Three previously undetected sources: T Pyx, V1974 Cygni and RX J0019.8+2156 were imaged in q
Externí odkaz:
http://arxiv.org/abs/astro-ph/0111120
Autor:
Ogley, R. N., Burnell, S. J. Bell, Spencer, R. E., Newell, S. J., Stirling, A. M., Fender, R. P.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 326 (2001) 349
We have observed a number of minor radio flares in Cyg X-3 using the MERLIN array. Photometric observations show the system to be highly active with multiple flares on hourly timescales over the one month observing programme. Analysis of the source's
Externí odkaz:
http://arxiv.org/abs/astro-ph/0104469
Autor:
Fender, R. P., Hjellming, R. M., Tilanus, R. P. J., Pooley, G. G., Deane, J. R., Ogley, R. N., Spencer, R. E.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 322 (2001) L23
We present observations of the X-ray transient XTE J1118+480 during its Low/Hard X-ray state outburst in 2000, at radio and sub-millimetre wavelengths with the VLA, Ryle Telescope, MERLIN and JCMT. The high-resolution MERLIN observations reveal all t
Externí odkaz:
http://arxiv.org/abs/astro-ph/0101346
Publikováno v:
Astrophys.Space Sci. 276 (2001) 99-100
We have observed in the mid-infrared (4-18 micron) the counterpart of the compact object GRS 1915+105, and the western jet of SS433. The images were carried out with the ISOCAM infrared camera on board of the Infrared Space Observatory (ISO). The mid
Externí odkaz:
http://arxiv.org/abs/astro-ph/0011213
Publikováno v:
Mon.Not.Roy.Astron.Soc. 322 (2001) 177
We observed the energetic binary Cygnus X-3 in both quiescent and flaring states between 4 and 16 microns using the ISO satellite. We find that the quiescent source shows the thermal free-free spectrum typical of a hot, fast stellar wind, such as fro
Externí odkaz:
http://arxiv.org/abs/astro-ph/0010439
Publikováno v:
Mon.Not.Roy.Astron.Soc. 317 (2000) 158
We present the first detections of the black hole X-ray binary GRS 1915+105 at sub-millimetre wavelengths. We clearly detect the source at 350 GHz on two epochs, with significant variability over the 24 hr between epochs. Quasi-simultaneous radio mon
Externí odkaz:
http://arxiv.org/abs/astro-ph/0004123
Autor:
Ogley, R. N., Burnell, S. J. Bell, Fender, R. P., Pooley, G. G., Waltman, E. B., van der Klis, M.
Publikováno v:
New Astron.Rev. 42 (1998) 637-640
Multi-wavelength photometric observations of Cygnus X-3 were carried out at 18 cm through to 450 um, complemented by X-ray (2-10 keV) observations. The system was mildly active with cm fluxes at 150 -- 250 mJy. We find the spectrum to be flat with a
Externí odkaz:
http://arxiv.org/abs/astro-ph/9808019
Publikováno v:
Vistas Astron. 41 (1997) 65
Modelling of the point spread function of the UKIRT IRCAM3 array was conducted in order to test any extended emission around the X-ray binary Cyg X-3. We found that the point spread function cannot be represented by a simple Gaussian, but modelling o
Externí odkaz:
http://arxiv.org/abs/astro-ph/9611114
Publikováno v:
ASP Conf Ser 121 (1997) 775
We present UKIRT infrared images of the X-ray binary Cygnus X-3. We address the possibility of extended infrared emission and show that it could be either warm circumstellar material or a star near the binary's line of sight.
Comment: to appear
Comment: to appear
Externí odkaz:
http://arxiv.org/abs/astro-ph/9609112
Publikováno v:
MNRAS 285 (1997) 187
Following the recent discovery that Cyg X-3 exhibits superluminal motion, the implications of superluminal expansion and contraction are investigated. We propose that the effect is due to either a propagating photon pattern or to outwardly moving she
Externí odkaz:
http://arxiv.org/abs/astro-ph/9609114