Results 11 to 20 of about 240,141 (195)

Relativistic jets [PDF]

open access: yesNew Astronomy Reviews, 2004
Despite substantial observational and theoretical progress over many years, numerous key questions surrounding the topic of relativistic jets remain to be answered.
Bicknell, G. V.   +2 more
core   +5 more sources

Relativistic jets in narrow-line Seyfert 1 galaxies. New discoveries and open questions

open access: yesEPJ Web of Conferences, 2013
Before the launch of the Fermi satellite only two classes of AGNs were known to produce relativistic jets and thus emit up to the γ-ray energy range: blazars and radio galaxies, both hosted in giant elliptical galaxies.
D’Ammando F.   +4 more
doaj   +2 more sources

Heat transfer from swirling impinging jets [PDF]

open access: yes, 1980
This thesis is concerned with the determination of the local and average mass/heat transfer--from swirling jets impinging orthogonally onto flat surfaces.
Mahmood, M.
core   +7 more sources

The relativistic Jet in M84 [PDF]

open access: yesSymposium - International Astronomical Union, 1996
The elliptical galaxy M84 (NGC 4374, UGC 07494) hosts an FR-I radio continuum source (Laing & Bridle 1987, MNRAS, 228, 557) and a dusty, warped optical emission line “disk” (Baumet al.1988, ApJS, 68, 643; Goudfrooijet al.1994, A&ApS, 105, 341).
J. M. Wrobel, R. C. Walker, A. H. Bridle
openaire   +1 more source

Calibrating The Power Of Relativistic Jets [PDF]

open access: yesProceedings of High Energy Phenomena in Relativistic Outflows VII — PoS(HEPRO VII), 2020
There are several methods to calculate the radiative and kinetic power of relativistic jets, but their results can differ by one or two orders of magnitude. Therefore, it is necessary to perform a calibration of the jet power, to understand the reasons for these differences (whether wrong hypotheses or intrinsic source variability), and if it is ...
Foschini, L.   +14 more
openaire   +3 more sources

Simulations of relativistic extragalactic jets [PDF]

open access: yesThe Astrophysical Journal, 1994
We describe a method for the numerical solution of the relativistic Euler equations which we have found to be both robust and efficient, and which has enabled us to simulate relativistic jets. The technique employs a solver of the Godunov-type, with approximate solution of the local Riemann problems, applied to laboratory frame variables.
Duncan, G. Comer, Hughes, Philip A.
openaire   +2 more sources

Relativistic Jets from Collapsars [PDF]

open access: yesThe Astrophysical Journal, 2000
Using a collapsar progenitor model of MacFadyen & Woosley we have simulated the propagation of an axisymmetric jet through a collapsing rotating massive star with the GENESIS multi-dimensional relativistic hydrodynamic code. The jet forms as a consequence of an assumed (constant or variable) energy deposition in the range $10^{50}$ erg s$^{-1}$ to $
Aloy, Miguel A.   +4 more
openaire   +5 more sources

Shock dynamics in relativistic jets [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2013
We present a formalism of the dynamics of internal shocks in relativistic jets where the source has a time-dependent injection velocity and mass-loss rate. The variation of the injection velocity produces a two-shock wave structure, the working surface, that moves along the jet.
Cantó, J.   +4 more
openaire   +2 more sources

Letter to Nature: An ultra-relativistic outflow from a neutron star accreting gas from a companion. [PDF]

open access: yes, 2004
Collimated relativistic outflows—also known as jets—are amongst the most energetic phenomena in the Universe. They are associated with supermassive black holes in distant active galactic nuclei1, accreting stellar-mass black holes and neutron stars in ...
Johnston, H.   +27 more
core   +1 more source

On the internal structure of relativistic jets [PDF]

open access: yesAstronomy Letters, 2000
19 pages, 2 ...
Beskin, Vassily S., Malyshkin, Leonid
openaire   +2 more sources

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