Zobrazeno 1 - 10
of 42
pro vyhledávání: '"E. B. Waltman"'
Publikováno v:
Symposium - International Astronomical Union. 219:181-186
Periodicities of radio flaring activity from the Algol systems β Per and δ Lib and the RS CVn systems V711 Tau and UX Ari were determined from a continuous 5-year survey. The radio continuum fluxes at 2.3 GHz and 8.3 GHz were monitored with the NRA
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f78e7b07240a4833de165dfd1f9146f
https://doi.org/10.1017/s0074180900182105
https://doi.org/10.1017/s0074180900182105
Publikováno v:
The Astrophysical Journal Supplement Series. 147:337-361
We report on the longest-running continuous radio flare survey of two Algol-type systems (β Per and δ Lib) and two RS CVn systems (V711 Tau and UX Ari). All four systems have late-type components, and all were known to display radio flaring activit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6786e38ed1dd0e7c9249fac270263868
https://doi.org/10.1086/375835
https://doi.org/10.1086/375835
Autor:
Alan P. Marscher, J. Hallum, Margo F. Aller, Hugh D. Aller, H. Teräsranta, S. G. Jorstad, J. R. Mattox, E. B. Waltman
Publikováno v:
The Astrophysical Journal. 549:906-914
During the first 3 years of the Compton Gamma Ray Observatory mission, the blazar CTA 26 was observed 10 times by EGRET and not significantly detected. We report an observation in 1995 when CTA 26 flared to a peak γ-ray flux of (4.9 ± 1.5) × 10-6
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5114f5a1eff0f35e44237c8be4ebc19b
https://doi.org/10.1086/319435
https://doi.org/10.1086/319435
Autor:
Sergei A. Trushkin, Rob Fender, Frank D. Ghigo, Robert M. Hjellming, Michael P. Rupen, Robert J. Sault, Richard W. Hunstead, Bryan Gaensler, Simon Garrington, Anita M. S. Richards, M. L. McCollough, D. Smith, C. J. de la Force, E. B. Waltman, D. Campbell-Wilson, A. J. Mioduszewski, Ralph Spencer
Publikováno v:
The Astrophysical Journal. 544:977-992
We report on radio observations of the 1999 September event of the X-ray transient V4641 Sgr (=XTE J1819-254=SAX J1819.3-2525). This event was extremely rapid in its rise and decay across radio, optical, and X-ray wavelengths; the X-rays rose to 12 c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7172769b59d2a5ee7a6abdda15582773
https://doi.org/10.1086/317255
https://doi.org/10.1086/317255
Autor:
B. A. Harmon, Geoffrey N. Pendleton, R. S. Foster, S. N. Zhang, C. R. Robinson, Robert M. Hjellming, Frank D. Ghigo, K. J. Johnston, Michael L. McCollough, Michael S. Briggs, E. B. Waltman
Publikováno v:
The Astrophysical Journal. 517:951-955
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a734d9e44422e5c3da6e0412f6e4d2bc
https://doi.org/10.1086/307241
https://doi.org/10.1086/307241
Autor:
A. M. Stirling, T. W. B. Muxlow, Simon Garrington, Rob Fender, Ralph Spencer, Guy G. Pooley, E. B. Waltman, D. J. McKay
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 304, 865-876. Oxford University Press
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::822739715960793b1174331d6cb7b2bc
https://doi.org/10.1046/j.1365-8711.1999.02364.x
https://doi.org/10.1046/j.1365-8711.1999.02364.x
Publikováno v:
The Astrophysical Journal. 507:371-383
We report dual circular polarization VLBA observations of Algol made at orbital phases 0.22-0.30 using a differential phase referencing technique. The flux density of Algol varied from 10 to 20 mJy during the observations. The radio maps show a doubl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c7f6759534b560131bfff491f74203e
https://doi.org/10.1086/306311
https://doi.org/10.1086/306311
Autor:
Shan-Jie Qian, Thomas P. Krichbaum, A. Witzel, Hugh D. Aller, Alexander Kraus, Silke Britzen, E. B. Waltman, E. Valtaoja
Publikováno v:
Chinese Astronomy and Astrophysics. 22:280-287
In this paper we use the “burst-injection model” of Qian et al. to analyze the evolution of the two mm-radio outbursts in 1991/93 in PKS 0528 + 134. comparison is made between the model and observed light curves at 12 frequencies between 230 GHz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db17b31bfc02361c9dae821d1b03d89d
https://doi.org/10.1016/s0275-1062(98)00038-1
https://doi.org/10.1016/s0275-1062(98)00038-1
Publikováno v:
The Astrophysical Journal. 491:381-387
LSI +61 303 is an exotic binary system consisting of a ~10 Msun B star and a compact object which is probably a neutron star. The system is associated with the interesting radio source GT0236+610 that exhibits bright radio outbursts with a period of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::690a75a20160421022b583ea8ae869fc
https://doi.org/10.1086/304923
https://doi.org/10.1086/304923
Publikováno v:
Vistas in Astronomy. 41:43-47
Quenching of the X-ray binary Cygnus X-3 at 2.25 GHz prior to outbursts during 1990–1993 is compared with published multi-frequency results. Flux density measurements obtained at 15 GHz with the Ryle Telescope during 1994–1995 are compared with f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7183ed6d71d0e0cff2361d6100f58ae8
https://doi.org/10.1016/s0083-6656(96)00061-x
https://doi.org/10.1016/s0083-6656(96)00061-x