Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Waltman, E."'
Autor:
Lazio, T. Joseph W., Waltman, E. B., Ghigo, F. D., Fiedler, R. L., Foster, R. S., Johnston, K. J.
Publikováno v:
Astrophys.J.Suppl. 136 (2001) 265-392
We present light curves for 149 sources monitored with the Green Bank Interferometer. The light curves are at two radio frequencies (approximately 2.5 and 8.2 GHz) and range from 3 to 15 yrs in length, covering the interval 1979--1996, and have a typ
Externí odkaz:
http://arxiv.org/abs/astro-ph/0105433
Autor:
Muno, M. P., Remillard, R. A., Morgan, E. H., Waltman, E. B., Dhawan, V., Hjellming, R. M., Pooley, G.
We combine a complete sample of 113 pointed observations taken with the Rossi X-ray Timing Explorer between 1996-1999, monitoring observations taken with the Ryle telescope and the Green Bank Interferometer, and selected observations with the Very La
Externí odkaz:
http://arxiv.org/abs/astro-ph/0104067
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
The binary system, LSI+61 303, is unusual both because of the dramatic, periodic, radio outbursts, and because of its possible association with the 100 MeV gamma-ray source, 2CG135+01. We have performed simultaneous radio and Rossi X-ray Timing Explo
Externí odkaz:
http://arxiv.org/abs/astro-ph/9908076
Autor:
Fender, R. P., Garrington, S. T., McKay, D. J., Muxlow, T. W. B., Pooley, G. G., Spencer, R. E., Stirling, A. M., Waltman, E. B.
Publikováno v:
Mon.Not.Roy.Astron.Soc.304:865,1999
We present high resolution MERLIN radio images of multiple relativistic ejections from GRS 1915+105 in 1997 October / November. The observations were made at a time of complex radio behaviour, corresponding to multiple optically-thin outbursts and se
Externí odkaz:
http://arxiv.org/abs/astro-ph/9812150
Autor:
McCollough, M. L., Robinson, C. R., Zhang, S. N., Harmon, B. A., Paciesas, W. S., Dieters, S., Phengchamnan, S., Hjellming, R. M., Rupen, M., Mioduszewski, A. J., Waltman, E. B., Ghigo, F. D., Pooley, G. G., Fender, R. P., Cui, W., Trushkin, S.
Cyg X-3 is an unusual X-ray binary which shows remarkable correlative behavior between the hard X-ray, soft X-ray, and the radio. We present an analysis of these long term light curves in the context of spectral changes of the system. This analysis w
Externí odkaz:
http://arxiv.org/abs/astro-ph/9811046
Autor:
McCollough, M. L., Robinson, C. R., Zhang, S. N., Harmon, B. A., Hjellming, R. M., Waltman, E. B., Foster, R. S., Ghigo, F. D., Briggs, M. S., Pendleton, G. N., Johnston, K. J.
Using CGRO/BATSE hard X-ray (HXR) data and GHz radio monitoring data from the Green Bank Interferometer (GBI), we have performed a long term study ($\sim$ 1800 days) of the unusual X-ray binary Cyg X-3 resulting in the discovery of a remarkable relat
Externí odkaz:
http://arxiv.org/abs/astro-ph/9810212
Autor:
McCollough, M. L., Robinson, C. R., Zhang, S. N., Harmon, B. A., Paciesas, W. S., Dieters, S. W., Hjellming, R. M., Rupen, M., Mioduszewski, A. J., Waltman, E. B., Ghigo, F. D., Pooley, G. G., Fender, R. P., Cui, W., Trushkin, S.
Publikováno v:
New Astron.Rev. 42 (1998) 629-632
In the period between May 1997 and August 1997 a series of pointed RXTE observations were made of Cyg X-3. During this period Cyg X-3 made a transition from a quiescent radio state to a flare state (including a major flare) and then returned to a qui
Externí odkaz:
http://arxiv.org/abs/astro-ph/9809389
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
Autor:
Turler, M., Paltani, S., Courvoisier, T. J. -L., Aller, M. F., Aller, H. D., Blecha, A, Bouchet, P., Lainela, M., McHardy, I. M., Robson, E. I., Stevens, J. A., Terasranta, H., Tornikoski, M., Ulrich, M. -H., Waltman, E. B., Wamsteker, W., Wright, M. C. H.
Publikováno v:
1999, A&AS 134, 89
We present a wide multi-wavelength database of most observations of the quasar 3C 273 obtained during the last 30 years. This database is the most complete set of observations available for an active galactic nucleus (AGN). It contains nearly 20'000
Externí odkaz:
http://arxiv.org/abs/astro-ph/9807283