Speaker
Description
I will present the high-resolution 1.5-GHz radio observations of 280
nearby galaxies with the eMERLIN array, part of the LeMMINGs survey.
The sample consists of active and non-active galaxies, taken from
the Palomar sample. The radio images reveal a broad variety of
morphologies: one/two-sided jets, double-lobed jets, complex
structures and star formation regions on a typical scale of ~100 pc,
down to a radio luminosity of ~10^19 W/Hz. The most important result
is the detection of pc-scale jetted structures associated with black
hole masses down to 10^6 solar mass. By dividing the sample into
optical classes, LINERs show more core-brightened radio morphologies
and appear to be the scaled-down version of FRI radio galaxies;
Seyferts show less collimated jets than LINERs; HII galaxies and
Absorption-line galaxies are a mixed populationof weakly active and
silent black holes. In addition, by including new Chandra X-ray
data, I will explore their disc-jet connection and the origin of
their nuclear emission in low-luminosity AGN and inactive galaxies.
| Reasearch area | Extragalactic Continuum (galaxies/AGN, galaxy clusters) |
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