High Resolution, Wide Field Imaging of the Galactic Center at Low Frequencies

Statistics – Computation

Scientific paper

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Scientific paper

Recent advances in observational and computational techniques have brought about a renaissance in low frequency radio astronomy. The NRL-NRAO 74 and 330 MHz VLA systems have enabled the first high-resolution (25 and 6 arcseconds, respectively), high-dynamic range imaging at these frequencies. Similar images at complimentary frequencies are also now starting to emerge from the GMRT. We present multi-configuration VLA images of the Galactic center. These images are being used to: Identify new radio transients toward the Galactic center (Hyman et al. 2002, AJ, 123, 1497); Probe the radial distribution of Galactic cosmic rays toward the Galactic center; Search for new non-thermal filaments; Search for Galactic center pulsars; and Constrain HII region physical parameters Basic research in radio astronomy at the Naval Research Laboratory is supported by the Office of Naval Research.

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