منابع مشابه
Radio Jet in Ngc 7479
The barred galaxy NGC 7479 hosts a remarkable jet-like radio continuum feature: bright, 12-kpc long in projection, and hosting an aligned magnetic field. The degree of polarization is 6%–8% along the jet, and remarkably constant, which is consistent with helical field models. The radio brightness of the jet suggests strong interaction with the ISM and hence a location near the disk plane. We ob...
متن کاملJet deflections in radio galaxies
Convincing evidence for the interaction between jets and their environments has been found inmany extragalactic radio sources. In some radio galaxies these interactions appear to cause the jet to be deflected, not completely stopped or disrupted. This paper presents a simple model which accounts for jet deflections with oblique shocks in a relativistic flow. Using the model in conjunction with ...
متن کاملFIRST quasars and the radio dichotomy
Much evidence has been presented in favor of and against the existence of two distinct populations of quasars, radio-loud and radio-quiet. The SDSS differs from earlier optically selected quasar surveys in the large number of quasars and the targeting of FIRST radio source counterparts as quasar candidates. This allows a qualitatively different approach of constructing a series of samples at di...
متن کاملA dichotomy in the orientation of dust and radio jets in nearby low - power radio galaxies ⋆
We examine the properties of central dust in nearby quiescent and active early-type galaxies. The active galaxies are low-power radio galaxies with Fanaroff & Riley Type I or I/II radio jets. We focus on (a) the comparison of the dust distributions in the active and quiescent galaxy samples and (b) the relation between the radio jet and dust orientations. Our main observational conclusions are:...
متن کاملRadio and optical orientations of galaxies
We investigate the correlations between optical and radio isophotal position angles for 14302 SDSS galaxies with r magnitudes brighter than 18 and which have been associated with extended FIRST radio sources. We identify two separate populations of galaxies using the colour, concentration and their principal components. Surprisingly strong statistical alignments are found: late-type galaxies ar...
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ژورنال
عنوان ژورنال: New Astronomy Reviews
سال: 2006
ISSN: 1387-6473
DOI: 10.1016/j.newar.2006.06.031