Episodic ejection of relativistic jets by the X-ray transient GRO J1655-40
Article Abstract:
The galactic black-hole candidate GRO J1655-40 may advance the study of relativistic jets from accretion disks because its jets evolve quickly and are near enough for small-scale features to be visible. In the intrinsically asymmetric relativistic jets, the blobs of emission associated with episodes of continuous jet ejection, yield emission on both sides of the central engine. The lifetime of the ejecta ranges from a few days to several months. Relativistic beaming fails to explain the alternate brightening and fading of the jets.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
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Correlation between X-ray outbursts and relativistic ejections in the X-ray transient GRO J1655 - 40
Article Abstract:
X-ray emission from relativistic jet sources usually proceeds radio relativistic jets by between a few days and two weeks despite the belief that the emissions feed the source with the material necessary to produce the jet. Therefore, the mechanism by which the X-ray emissions are connected to the ejection method must be complex. GRO J1655 - 40, an object/accretion-disk system, may help resolve some of the questions about jet formation and its connection to X-ray emission.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
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A new type of transient high-energy source in the direction of the Galactic Centre
Article Abstract:
Rapid and successive bursts of hard X-rays started to be observed on Dec. 2, 1995 from a source in the direction of the Galactic Centre. The bursts occurred at intervals of approximately five seconds and normally lasted 30 seconds. They attained a peak intensity of around 300 counts s(super -1) in the 25-60 keV energy band. More than 1,000 bursts have since been reported, and the source is believed to be a neutron star.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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