A VLA study of the Supernova Remnant Kes 79

CASTELLETTI G., GIACANI E., DUBNER G., LOISEAU N.

Capilla del Monte, Córdoba, Argentina, 18 al 22 de septiembre

Congreso; 49a Reunión Anual de la Asociación Argentina de Astronomía; 2006

Asociación Argentina de Astronomía

We present new high quality images of the supernova remnant (SNR) Kes 79 (G33.6+0.1) at 74 and 324 MHz. We also report a new radio continuum image of the SNR at 1.5 GHz obtained after reprocessing VLA archival data and combine it with single-dish observations. The new images reveal two incomplete concentric shells immersed in diffuse emission. Based on the new observations a cometary-like radio nebula with the pulsanting X-ray point source CXOU J185238.6+004020 located at the apex, has been detected at both 324 MHz and 1.5 GHz. A pulsar wind nebula origin is suggested for this structure.