A VLA Archive Observation of the Youngest Known Galactic Supernova Remnant G1.9+0.3

Yolanda Gómez

Abstract


We present the analysis of an unpublished VLA archive observation made at 1.49 GHz in 1989 toward the supernova remnant G1.9+0.3, the youngest such Galactic object known. This observation agrees with the time evolution in angular size previously reported. We derive an expansion rate of 0.46+0.11% per year and an age of 220±70₄₅ 45 yr for the remnant by comparing the 1985 and 1989 images.

Keywords


ISM: individual (G1.9+0.3); supernova remnants

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