Radio observations of supernova remnant G1.9+0.3 by Luken, KJ, Filipovic, MD, Maxted, NI, Kothes, R, Norris, RP, Allison, JR, Blackwell, R, Braiding, C, Brose, R, Burton, M, De Horta, AY, Galvin, TJ, Harvey-Smith, L, Hurley-Walker, N, Leahy, D, Ralph, NO, Roper, Q, Rowell, G, Sushch, I, Urosevic, D, Wong, GF