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A New Radio Detection of the Bursting Source GCRT J1745-3009
Scott D. Hyman, T. Joseph W. Lazio, Subhashis Roy +2
GCRT J1745-3009 is a transient bursting radio source located in the direction of the Galactic center, discovered in 330 MHz VLA observations from 2002 September 30--October 1 by Hy…
Evidence for a Weak Galactic Center Magnetic Field from Diffuse Low Frequency Nonthermal Radio Emission
T. N. LaRosa, C. L. Brogan, S. N. Shore +3
New low-frequency 74 and 330 MHz observations of the Galactic center (GC) region reveal the presence of a large-scale ($6\arcdeg\times 2\arcdeg$) diffuse source of nonthermal synch…
Discovery of a Radio Supernova Remnant and Non-thermal X-rays Coincident with the TeV Source HESS J1813-178
C. L. Brogan, B. M. Gaensler, J. D. Gelfand +4
We present the discovery of non-thermal radio and X-ray emission positionally coincident with the TeV -ray source HESS J1813--178. We demonstrate that the non-thermal radio emis…
Low Frequency Radio Observations of X-ray Ghost Bubbles in Abell 2597: A History of Radio Activity in the Core
T. E. Clarke, C. L. Sarazin, E. L. Blanton +2
A previous analysis of the Chandra X-ray image of the center of the cooling core cluster Abell 2597 showed two ``ghost holes'' in the X-ray emission to the west and northeast of th…
Spatially Resolved Low Frequency VLA observations of the Supernova Remnant 3C 391
C. L. Brogan, T. J. Lazio, N. E. Kassim +1
We present VLA images of the supernova remnant (SNR) 3C~391 at 74, 330, and 1465 MHz. This remnant has been known for some time to exhibit a turnover in its integrated radio contin…
A powerful bursting radio source towards the Galactic Centre
S. D. Hyman, T. J. W. Lazio, N. E. Kassim +3
Transient astronomical sources are typically powered by compact objects and usually signify highly explosive or dynamic events. While radio astronomy has an impressive record of ob…