نتایج جستجو برای: jets
تعداد نتایج: 14822 فیلتر نتایج به سال:
The Chandra X-ray Observatory has proven to be a vital tool for studying high-energy emission processes in jets associated with active galactic nuclei (AGNs). We have compiled a sample of 27 AGNs selected from the radio flux-limited MOJAVE (Monitoring of Jets in AGNs with VLBA Experiments) sample of highly relativistically beamed jets to look for correlations between X-ray and radio emission on...
Fine jets of slightly conducting viscous fluids and thicker jets or drops of less viscous ones can be drawn from conducting tubes by electric forces. As the potential of the tube relative to a neighbouring plate rises, viscous fluids become nearly conical and fine jets come from the vertices. The potentials at which these jets or drops first appear was measured and compared with calculations. T...
X–ray observations of blazars associated with the OVV (Optically Violently Variable) quasars put strong constraints on the ee pair content of radio-loud quasar jets. From those observations, we infer that jets in quasars contain many more ee pairs than protons, but dynamically are still dominated by protons. In particular, we show that pure ee jet models can be excluded, as they overpredict sof...
Two relativistic X-ray jets have been detected with the Chandra X-ray observatory from the black hole X-ray transient XTE J1550-564. We report a full analysis of the evolution of the two jets with a gamma-ray burst external shock model. A plausible scenario suggests a cavity outside the central source and the jets first travelled with constant velocity and then are slowed down by the interactio...
I present an overview of past, present and future research on micro-quasars and jets, showing that microquasars, i.e. galactic jet sources, are among the best laboratories for high energy phenomena and as-troparticle physics. After reminding the analogy with quasars, I focus on one of the best microquasar representatives, probably the archetype, namely GRS 1915+105, and present accretion and ej...
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