The Apparent "Angular Size - Frequency" Dependence in ~3000 Parsec-scale Extragalactic Jets

Simple item page
dc.creatorYang, J.
dc.creatorGurvits, L. I.
dc.creatorFrey, S.
dc.creatorLobanov, A. P.
dc.date2008-11-18
dc.date.accessioned2026-07-07T10:19:11Z
dc.date.available2026-07-07T10:19:11Z
dc.descriptionThe upper envelope of the amplitude of the VLBI visibility function usually represents the most compact structural pattern of extragalactic radio sources, in particular, the "core-jet" morphologies. By fitting the envelope to a circular Gaussian model in ~3000 parsec-scale core-jet structures, we find that the apparent angular size shows significant power-law dependence on the observing frequency (power index n = -0.95 pm 0.37). The dependence is likely to result from synchrotron self-absorption in the inhomogeneous jet and not the free-free absorption (n = -2.5), nor the simple scatter broadening (n leq -2).
dc.description3 pages, 3 figures, Proceedings of 10th Asian-Pacific Regional IAU Meeting 2008
dc.identifierhttps://arxiv.org/abs/0811.2926
dc.identifierhttp://arxiv.org/abs/0811.2926
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/174417
dc.subjectAstrophysics
dc.titleThe Apparent "Angular Size - Frequency" Dependence in ~3000 Parsec-scale Extragalactic Jets
dc.typetext

Files

Collections

arXiv