High-Resolution, Wide-Field Imaging of the Galactic Center Region at 330 MHz
Michael E. Nord1,6, T. Joseph W. Lazio1, Namir E. Kassim1, S. D. Hyman2, T.N. LaRosa3, C. Brogan4, N. Duric5
(1) Naval Research Laboratory, Code 7213, Naval Research Laboratory, Washington, DC 20375-5351
(2) Department of Physics and Engineering, Sweet Briar College, Sweet Briar, VA 24595
(3) Department of Biological and Physical Sciences, Kennesaw State University, 1000 Chastain Road, Kennesaw, GA 30144
(4) Institute for Astronomy, 640 North A'ohoku Place, Hilo, HI 96720
(5) Department of Physics and Astronomy, University of New Mexico, 800 Yale Boulevard NE, Albuquerque, NM 87131
(6) Doctoral Student, University of New Mexico
Paper: AJ Accepted
Abstract:
We present a wide field, sub-arcminute resolution VLA image of the
Galactic Center region at 330 MHz. With a resolution of 7''
* 12'' and an RMS noise of 1.6 mJy/beam, this image
represents a significant increase in resolution and sensitivity over the
previously published VLA image at this frequency. The improved
sensitivity has more than tripled the census of small diameter sources
in the region, has resulted in the detection of two new Non Thermal
Filaments (NTFs), 18 NTF candidates, 30 pulsar candidates, reveals
previously known extended sources in greater detail, and has resulted in
the first detection of Sagittarius A* in this frequency range.
Preprints available from the authors at Michael.Nord@nrl.navy.mil
,
or the raw TeX (no figures) if you click here.
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