The radio bright zone (RBZ) at the Galactic center has been observed with the JVLA in the A, B and C array configurations at 5.5 and 9 GHz. With a procedure for high-dynamic range imaging developed on CASA, we constructed deep images a resolution up to 0.2", achieving rms noises of a few μJy/beam. From the high-resolution and high-dynamics range images at 5.5 and 9 GHz, a population of compact radio sources ranging from a few mJy to a few tens μJy in flux density is revealed. The steep-spectrum radio sources in RBZ are likely the candidates of high-energy objects that are associated with neutron stars and/or stellar mass black holes at the Galactic center. We report new results of the Cannonball and Galactic center transient (GCT).
@article{arxiv.2010.12352,
title = {A Population of Compact Radio Sources at the Galactic Center},
author = {Jun-Hui Zhao and Mark R. Morris and W. M. Goss},
journal= {arXiv preprint arXiv:2010.12352},
year = {2020}
}
Comments
2 pages, 1 figure, in GCWS2019, eds M. Tsuboi and T. Oka