Spatial distribution of antisymmetrically-curved extragalactic radio-jets

Florido, E.; Battaner, E.; Sánchez-Saavedra, M. L.

doi:10.1007/bf00653558

Cited by 9 publications

(11 citation statements)

References 37 publications

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“…The differential rotation between the inner and outer parts may result in precession of the inner part of the disk and the central black hole, hence drive a precessed jet produced by neutrino annihilation around the inner part of the disk, forming an Sor Z-shaped jet as observed in many extragalactic radio sources (see, e.g. Florido et al 1990). A tilted accretion disk surrounding a black hole would also lead to the precession of the black hole and result in an S-shaped jet as observed in SS 433 (Sarazin et al 1980;Lu 1990;Lu & Zhou 2005), although the angle between angular momentum of black hole and disk is small because of evolution of a two-compact-object system may decrease the angle between them in mergers or the anisotropic fall-back mass cannot produce a large angle between black hole and fall-back mass in collapsars.…”

Section: Introductionmentioning

confidence: 99%

Jet precession driven by neutrino-cooled disk for gamma-ray bursts

Liu¹,

Liang

et al. 2010

A&A

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Aims.A model of jet precession driven by a neutrino-cooled disk around a spinning black hole is presented to explain the temporal structure and spectral evolution of gamma-ray bursts (GRBs). Methods. The differential rotation of the outer part of a neutrino-dominated accretion disk may result in precession of the inner part of the disk and the central black hole, hence driving a precessed jet via neutrino annihilation around the inner part of the disk. Results. Both analytic and numeric results for our model are presented. Our calculations show that a black-hole, accretion-disk system with the black hole mass M 3.66 M , accretion rateṀ 0.54 M s −1 , spin parameter a = 0.9, and viscosity parameter α = 0.01 may drive a precessed jet with period P = 1 s and luminosity L = 10 51 erg s −1 , corresponding to the scenario for long GRBs. A precessed jet with P = 0.1 s and L = 10 50 erg s −1 may be powered by a system with M 5.59 M ,Ṁ 0.74 M s −1 , a = 0.1, and α = 0.01, and is possibly responsible for the short GRBs. Both the temporal and spectral evolution in GRB pulse may be explained with our model. Conclusions. GRB central engines most likely power a precessed jet driven by a neutrino-cooled disk. The global GRB lightcurves thus could be modulated by the jet precession during the accretion timescale of the GRB central engine. Both the temporal and spectral evolution in GRB pulse may stem from a viewing effect of the jet precession.

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Section: Introductionmentioning

confidence: 99%

Jet precession driven by neutrino-cooled disk for gamma-ray bursts

Liu¹,

Liang

et al. 2010

A&A

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“…An S-(or Z-) shaped morphological symmetry has been observed for many extragalactic radio sources, for example, for 39 of 365 extended radio sources collected by Florido, Battaner, & Sanchez-Saavedra (1990), for more than 30% of quasars with redshifts less than 1 and with a two-sided radio structure (Hutchings, Price, & Gower 1988). This phenomenon has generally been attributed to precession in the orientation of the radio jet.…”

Section: Introductionmentioning

confidence: 92%

Observational Evidence of Jet Precession in Galactic Nuclei Caused by Accretion Disks

Zhou

2005

ApJ

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“…See Figure 14 for typical examples of S or Z-shaped morphology. In an early compilation Florido et al (1990) found approximately 11% of radio sources with two jets showed S or Z-shaped morphology while approximately 9% showed both jets curving in same direction. The sample was 365 sources from published observations.…”

Section: S or Z-shapementioning

confidence: 99%

Morphological Annotations for Groups in the First Database

Proctor

2011

ApJS

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The morphology of selected groups of sources in the FIRST (Faint Images of the Radio Sky at Twenty Centimeters) survey and catalog is examined. Sources in the FIRST catalog (April 2003 release, 811117 entries) were sorted into singles, doubles, triples and groups of higher-count membership based on a proximity criteria. The 7106 groups with four or more components were examined individually for bent types including, but not limited to, wide-angle tail (WAT) and narrowangle tail (NAT) types. In the process of this examination, ring, double-double (DD), X-shaped, hybrid morphology (HYMOR), giant radio sources (GRS), and the herein described W-shaped and tri-axial morphology systems were also identified. For the convenience of the reader separate tables for distinctive types were generated. A few curiosities were found. For the 16,950 three-component groups and 74,788 two-component groups, catalogs with probability estimates for bent classification, as determined by pattern recognition techniques, are presented.

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Spatial distribution of antisymmetrically-curved extragalactic radio-jets

Cited by 9 publications

References 37 publications

Jet precession driven by neutrino-cooled disk for gamma-ray bursts

Jet precession driven by neutrino-cooled disk for gamma-ray bursts

Observational Evidence of Jet Precession in Galactic Nuclei Caused by Accretion Disks

Morphological Annotations for Groups in the First Database

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