Abstract

GOMEZ, Yolanda  and  RODRIGUEZ, Luis F.. A VLA Archive Observation of the Youngest Known Galactic Supernova Remnant G1.9+0.3. Rev. mex. astron. astrofis [online]. 2009, vol.45, n.1, pp.91-94. ISSN 0185-1101.

We present the analysis of an unpublished VLA archive observation made at 1.49 GHz in 1989 toward the supernova remnant G1.9+0.3, the youngest such Galactic object known.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 yr for the remnant by comparing the 1985 and 1989 images.

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

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