Results 271 to 280 of about 214,668 (294)

Observations of A0535+26 transient X-ray source

Advances in Space Research, 1981
Observations of the transient X-ray source A0535+26 obtained with the Signe-2MP instrument aboard Prognoz 6 and 7 are reported. Peak fluxes for the flares of this source are plotted, and the average count for a frame is studied as a function of the rotation angle (the measurement time was 10.5 hours).
I.V. Estulin, Sh.Yu. Rakhamimov, B.L. Novak, N.A. Eismont   +3 more
openaire   +1 more source

The nature of transient X-ray sources

Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1976
A review of models for transient X-ray sources and the predictions they entail.
openaire   +1 more source

BATSE observations of transient hard X-ray sources

AIP Conference Proceedings, 1994
Many transient sources have been detected and monitored by the Burst and Transient Source Experiment (BATSE) since launch using the Earth occultation technique. These include x‐ray novae, pulsars, and other galactic sources. We present preliminary results of the temporal and spectral characteristics for seven transients which are potentially black hole
B. A. Harmon, S. N. Zhang, C. A. Wilson, B. C. Rubin, G. J. Fishman, W. S. Paciesas   +5 more
openaire   +1 more source

Solar cycle model for oscillating transient X-ray sources

Astrophysics and Space Science, 1976
The oscillations observed recently in the transient X-ray source A1118-61 are attributed to variations in the magnetic activity of a rotating white dwarf similar to the 11-year solar activity cycle. The transient nature, in analogy with the sun, is attributed to the variation in the strength of the cycle.
Krishna M. V. Apparao, S. M. Chitre
openaire   +1 more source

Association of recurrent soft x-ray transients with x-ray burst sources

AIP Conference Proceedings, 1982
Hakucho observations have revealed that the soft transients, 2S1608‐522, 2S1715‐321, CenX‐4 and Aq1X‐1, all generate X‐ray burst. This result makes it convincing that these sources involve neutron stars. Furthermore, the optical counterpart of Aq1X‐1, when X‐ray quiescent, is identified to be a ∼KO dwarf, thus providing evidence that Aq1X‐1 is a binary
openaire   +1 more source

Improved declination for transient X-ray source A0620–00

Nature, 1975
OBSERVATIONS with the Effelsberg 100-m telescope at a frequency of 4,600 MHz have resulted in an improved declination for the radio source believed to be associated with the transient X-ray source A0620–00 (ref. 1). The observations were made on August 24, 1975 with a cooled parametric amplifier of system temperature 65 K.
J. BIEGING, D. DOWNES
openaire   +1 more source

Transient X-Ray Sources with Late-Type Companions

1989
In a few short-period (P≲1 day) X-ray binaries it is possible to observe the late-type secondary. Two examples are the X-ray novae Cen X-4 and A0620–00. Optical studies have shown that the degenerate star in the former has the mass expected for a neutron star, whereas the compact object in the latter is considerably more massive and is a likely black ...
openaire   +1 more source

X-Ray Properties of Black-Hole Binaries

Annual Review of Astronomy and Astrophysics, 2006
Jeffrey E Mcclintock
exaly  

Transient galactic radio and X-ray sources

Nature, 1976
openaire   +1 more source

GS2023+338: a new class of X-ray transient source?

Nature, 1989
Shunji Kitamoto
exaly