NAGIOS: RODERIC FUNCIONANDO

The role of Kelvin-Helmholtz instability in the internal structure of relativistic outflows : the case of the jet in 3C 273

Repositori DSpace/Manakin

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

The role of Kelvin-Helmholtz instability in the internal structure of relativistic outflows : the case of the jet in 3C 273

dc.contributor.author	Perucho Pla, Manuel
dc.contributor.author	Lobanov, A.P.
dc.contributor.author	Marti Puig, Jose Maria
dc.contributor.author	Hardee, P.E.
dc.date.accessioned	2010-06-29T10:28:57Z
dc.date.available	2010-06-29T10:28:57Z
dc.date.issued	2006
dc.identifier.citation	PERUCHO PLA, Manuel ; Lobanov, A.P. ; Marti Puig, Jose Maria ; Hardee, P.E., 2006, The role of Kelvin-Helmholtz instability in the internal structure of relativistic outflows. The case of the jet in 3C 273, Astronomy and Astrophysics, vol. 456, no. 2, p. 493-504	en
dc.identifier.uri	http://hdl.handle.net/10550/13987
dc.description.abstract	Context. Relativistic outflows represent one of the best-suited tools to probe the physics of AGN. Numerical modelling of internal structure of the relativistic outflows on parsec scales provides important clues about the conditions and dynamics of the material in the immediate vicinity of the central black holes in AGN. Aims. We investigate possible causes of the structural patterns and regularities observed in the parsec-scale jet of the well-known quasar 3C 273. Methods. We present here the results from a 3D relativistic hydrodynamics numerical simulation based on the parameters given for the jet by Lobanov & Zensus (2001, Science, 294, 128), and one in which the effects of jet precession and the injection of discrete components have been taken into account. We compare the model with the structures observed in 3C 273 using very long baseline interferometry and constrain the basic properties of the flow. Results. We find growing perturbation modes in the simulation with similar wavelengths to those observed, but with a different set of wave speeds and mode identification. If the observed longest helical structure is produced by the precession of the flow, longer precession periods should be expected. Conclusions. Our results show that some of the observed structures could be explained by growing Kelvin-Helmholtz instabilities in a slow moving region of the jet. However, we point towards possible errors in the mode identification that show the need of more complete linear analysis in order to interpret the observations. We conclude that, with the given viewing angle, superluminal components and jet precession cannot explain the observed structures.	en
dc.language.iso	en	en
dc.subject	Quasars ; 3C 273 ; Active galaxies ; Galaxies ; Jets ; Hydrodynamics	en
dc.title	The role of Kelvin-Helmholtz instability in the internal structure of relativistic outflows : the case of the jet in 3C 273	en
dc.type	journal article	es_ES
dc.subject.unesco	UNESCO::ASTRONOMÍA Y ASTROFÍSICA	en
dc.subject.unesco	UNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia	en
dc.identifier.doi	10.1051/0004-6361:20065310	en
dc.identifier.idgrec	035546	en
dc.type.hasVersion	VoR	es_ES
dc.identifier.url	http://www.aanda.org/articles/aa/pdf/2006/35/aa5310-06.pdf	en