Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.9119l&link_type=abstract
American Astronomical Society, 199th AAS Meeting, #91.19; Bulletin of the American Astronomical Society, Vol. 33, p.1440
Astronomy and Astrophysics
Astronomy
Scientific paper
We present wide-field Very Large Array (VLA) observations of the Galactic field centered on supernova remnant G29.7-0.3 at 330 and 74 MHz. These unique observations provide an unparalleled view of this rich, inner Galaxy field at high resolution and low frequency. This Galactic field enables a sensitive spectral index analysis of numerous sources when compared with existing higher frequency data. We present a preliminary catalog of objects in the field at 330 MHz, including analysis of the radio spectrum of G29.7-0.3, searching for turnovers in the spectrum caused by intervening low density ionized gas in the interstellar medium as was recently found towards the supernova remnant, W49B (Lacey et al. 2001, ApJ, 559, 954). This field is one of several inner Galaxy fields being surveyed at low frequency in an ongoing project using the new 74 MHz VLA system (see related poster by Brogan et al. 2001). Basic research in radio astronomy at the Naval Research Laboratory is supported by the Office of Naval Research.
Brogan Crystal L.
Kassim Namir
Lacey Christina K.
Lazio Joseph T. W.
Nord Michael
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