Multiwavelength, GBT survey of the Continuum Emission from the Inner Few Degrees of the Galactic Center

Details Multiwavelength, GBT survey of the Continuum Emission from the Inner Few Degrees of the Galactic Center Multiwavelength, GBT survey of the Continuum Emission from the Inner Few Degrees of the Galactic Center

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.5902l&link_type=abstract

American Astronomical Society Meeting 204, #59.02; Bulletin of the American Astronomical Society, Vol. 36, p.765

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Using the unprecedented sensitivity of the Green Bank Telescope (GBT), we surveyed the Galactic center region at 90cm, 20cm, 6cm, and 3.6cm, with resolutions of 40', 9', 3', and 1.5', respectively. The 90cm and 20cm surveys covered the central (l,b) = 12 x 10 degrees, wheras the 6cm and 3.6cm observed the central 4 x 1 degrees; all were roughly centered on Sgr A. VLA observations at 90cm are combined with the GBT observations using the "feathering" technique to create a high-resolution, 90cm image which is sensitive to emission on a wide range of angular scales. This 90cm image is compared to GBT images to separate thermal and nonthermal features in this complex region of the Galaxy. Preliminary results are presented on the spectral index distribution toward several Galactic center objects.

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