Compact radio cores in radio galaxies
نویسندگان
چکیده
منابع مشابه
Compact Radio Cores and Nuclear Activity in Seyfert Galaxies
Using recent high–resolution (<0.1”) radio observations of a large sample of Seyfert galaxies (Roy et al., 1994), we analyze the relations between their compact radio core emission and several nuclear and host galaxy properties (galaxy morphology, optical, infrared, X-ray, extended radio emissions, interaction parameters, and some emission line properties). We apply survival analysis techniques...
متن کاملRadio Galaxies in Cooling Cores
A currently active radio galaxy sits at the center of almost every strong cooling core. What effect does it have on the cooling core? Could its effect be strong enough to offset the radiative cooling which should be occuring in these cores? In order to answer these questions we need to know how much energy the radio jet carries to the cooling core; but we have no way to measure the jet power di...
متن کاملVLA and VLBA observations of compact radio cores in LINER galaxies Heino
A VLA survey of nearby LINER galaxies at 15 GHz has revealed the presence of a compact radio core in many sources. The cores seem to be correlated with the optical activity. Follow-up VLBA observations of the ten brightest sources confirm that these cores have brightness temperatures> 10 Kelvin, thus confirming their AGN nature. The two brightest radio sources show extended jet-like structures ...
متن کاملLight-year Scale Radio Cores in Four LINER Galaxies
The LINER galaxies NGC2911, NGC 3079, NGC3998, and NGC6500 were observed at 5 GHz with the European VLBI Network at a resolution of 5 milliarcsecond and found to possess flat-spectrum, variable, highbrightness temperature (TB > 10 8 K) radio cores. These radio characteristics reinforce the view that these LINERs host central engines associated with active galactic nuclei.
متن کاملRadio Galaxies in Cooling Cores: Insights from a Complete Sample
We have observed a new, complete, cooling-core sample with the VLA, in order to understand how the massive black hole in the central galaxy interacts with the local cluster plasma. We find that every cooling core is currently being energized by an active radio jet, which has probably been destabilized by its interaction with the cooling core. We argue that current models of cooling-core radio g...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1994
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/268.2.602