Observations of Supernova Remnants

This chapter discusses the GMRT 325-MHz observations of candidate and known SNRs. The motivation behind this exercise was two-fold. Firstly, to use the higher sensitivity and resolution provided by GMRT at low frequencies which would unambiguously identify the SNRs. Secondly, GMRT has only recently come to a stage where enough antennas are available in the interferometric mode to attempt imaging of weak extended sources, which truly tests the imaging performance of the instrument. In these early stages of the telescope where a large fraction of time and effort goes into debugging the instrument, it was important to have a scientific goal in mind to provide the focus, direction and motivation to debug the telescope and bring it to a level where it can be used for scientific purposes. These observations provided the required focus where the scientific returns for the debugging effort put-in were perceived to be substantial.