Asymmetric Expansion of the Youngest Galactic Supernova Remnant G1.9+0.3

K. J. Borkowski, P. Gwynne, S. P. Reynolds +4

The youngest Galactic supernova remnant (SNR) G1.9+0.3, produced by a (probable) SN Ia that exploded $\sim 1900$ CE, is strongly asymmetric at radio wavelengths, much brighter in t…