Radio Emission from AGN in Giant LSB Galaxies

Details Radio Emission from AGN in Giant LSB Galaxies Radio Emission from AGN in Giant LSB Galaxies

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..407..167d&link_type=abstract

The Low-Frequency Radio Universe ASP Conference Series, Vol. 407, proceedings of the conference held 8-12 December 2008, at Nati

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

We present GMRT multi-frequency radio observations of the centres of five Giant Low surface Brightness (LSB) galaxies. LSB galaxies have massive H I disks, are poor in star formation and are possibly the most dark matter dominated systems in our nearby universe. AGN have been detected at optical wavelengths but further studies at radio wavelengths have not been done before. We have conducted GMRT observations at 1.4~GHz and 610~MHz of five LSB galaxies that have prominent bulges and extended LSB disks. Our maps show that the emission is usually concentrated in the central region and is often associated with AGN activity and sometimes star formation as well. Compact cores and extended features resembling radio jets or lobes are seen in three galaxies while the remaining two galaxies have diffuse radio emission associated with the old stellar population in the bulge.

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