High-Resolution, Wide-Field Imaging of the Galactic Center Region at 330 MHz

Abstract

We present a wide-field, subarcminute-resolution VLA image of the Galactic center region at 330 MHz. With a resolution of -7" x 12" and an rms noise of 1.6 mJy beam (exp -1), 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 nonthermal filaments (NTFs), 18 NTF candidates, and 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.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2004
Accession Number
ADA464429

Entities

People

  • C. L. Brogan
  • Michael E. Nord
  • N. Duric
  • Namir E. Kassim
  • S. D. Hyman
  • T. Joseph W. Lazio
  • T. N. Larosa

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Algorithms
  • Astronomy
  • Bandwidth
  • Coordinate Systems
  • Data Reduction
  • Data Sets
  • Detection
  • Diameters
  • Filaments
  • Frequency
  • Grids
  • High Resolution
  • Observation
  • Radio Frequency
  • Scattering
  • Two Dimensional
  • Universities

Fields of Study

  • Physics

Readers

  • Astronomy/Astrophysics
  • Radar Systems Engineering.