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Astrophysics and Space Science, 1976
A rocket observation of cosmic soft X-rays suggests the existence of transient, recurrent soft X-ray sources which are found variable during the flight time of the rocket. Some of the soft X-ray sources thus far reported are considered to be of this time. These sources are listed in Table I, and their positions are shown in Figure 2.
S. Hayakawa +3 more
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A rocket observation of cosmic soft X-rays suggests the existence of transient, recurrent soft X-ray sources which are found variable during the flight time of the rocket. Some of the soft X-ray sources thus far reported are considered to be of this time. These sources are listed in Table I, and their positions are shown in Figure 2.
S. Hayakawa +3 more
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Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1976
Abstract One of the most striking results of Ariel 5 has been the large number of transient sources which has been observed, including what is probably a new type which is relatively short-lived and one near the Galactic Centre which is also probably distinct from the others since it was also observed as a radio source.
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Abstract One of the most striking results of Ariel 5 has been the large number of transient sources which has been observed, including what is probably a new type which is relatively short-lived and one near the Galactic Centre which is also probably distinct from the others since it was also observed as a radio source.
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The nature of transient X-ray sources
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1976Abstract A review of models for transient X-ray sources and the predictions they entail.
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Observations of A0535+26 transient X-ray source
Advances in Space Research, 1981Observations 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 +3 more
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Galactic and extragalactic Fast X-ray Transient sources
Nuclear Physics B - Proceedings Supplements, 2004Abstract Fast X-ray Transients (FXTs) have long been an enigma in x-ray astronomy. These non-recurrent and bright x-ray sources, lasting up to a day and without quiescent x-ray emission, have been studied with the Wide Field Cameras (WFCs) during the 6 years of operational life of BeppoSAX.
John Heise, Jean in 't Zand
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Possible models for some transient X-ray sources
Nature, 1975A TRANSIENT X-ray source flared up in Centaurus during December 1974 and was observed by the satellite Ariel V in the energy interval 3–30 keV (refs 1 and 2) Within a few days the source increased in intensity to a peak of 0.02 photons cm−2 s−1 keV−1. After reaching a maximum, the intensity decayed with an e-folding time of about 7 d.
FRANCO PACINI, STUART L. SHAPIRO
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Association of recurrent soft x-ray transients with x-ray burst sources
AIP Conference Proceedings, 1982Hakucho 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
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Transient X-Ray Sources with Late-Type Companions
1989In 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 ...
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Cosmic ray anisotropies from transient extragalactic sources
Physical Review D, 2021Diego Harari +2 more
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