High Resolution Imaging of the Galactic Center at Low Frequencies

Michael E. Nord1,2, Crystal L. Brogan3, Scott Hyman4, T.J.W. Lazio1, Namir E. Kassim1, K. Anantharamaiah5, N. Duric2

1 Naval Research Laboratory, Washington, DC
2 University of New Mexico, Albuquerque, NM
3 National Radio Astronomy Observatory, Socorro, NM
5 Sweet Briar College, Sweet Briar, VA
5 Raman Research Institute, Bangalore, India

AUTHORS

E-mail contact: Michael.Nord@nrl.navy.mil

(2002).

We present a wide field, high resolution image of the Galactic Center region at 327 MHz. With a resolution of 7'' and an RMS noise of 2 mJy beam-1, this image represents a significant increase in resolution and in sensitivity over previously published VLA images at the same frequency (LaRosa et al, 2000). The new image has uncovered several previously undetected radio sources, including at least six new non-thermal filaments candidates and one radio transient. Previously resolved objects are revealed in closer detail, and a comparison with X-ray sources is on going. A low resolution version of a simultaneously obtained image at 74 MHz will also be presented, and will be reported on in further detail in a separate talk (C.L. Brogan).