Finding the Missing Remnants: A Low Frequency VLA Survey of the Galactic Plane from Latitude +4 to +23 Degrees

Details Finding the Missing Remnants: A Low Frequency VLA Survey of the Galactic Plane from Latitude +4 to +23 Degrees Finding the Missing Remnants: A Low Frequency VLA Survey of the Galactic Plane from Latitude +4 to +23 Degrees

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xrrc.proce4.09b&link_type=abstract

"X-Ray and Radio Connections (eds. L.O. Sjouwerman and K.K Dyer) Published electronically by NRAO, http://www.aoc.nrao.edu/event

Physics

1

X-Ray, Radio, Supernova Remnants

Scientific paper

Predictions of the Galactic supernova remnant (SNR) rate and statistical studies of the current Galactic SNR census both indicate that there should be many more SNRs in our Galaxy than are currently known (˜ 230). This paucity of SNRs is likely due in part to selection effects, which are most severe toward the inner Galaxy where the diffuse non-thermal Galactic plane emission coupled with the thermal emission from H2 regions causes the most confusion. We present a high-resolution, high dynamic range survey of the Galactic plane from ℓ = +4 arcdeg to +23 arcdeg (b = -1.5 dg to 1+5 dg) using 330 MHz observations with the Very Large Array (VLA). At this frequency we exploit the non-thermal spectra of SNRs while our high angular resolution allows us to separate them from the diffuse Galactic emission. We present a number of newly discovered SNRs from the initial stages of the survey, together with supporting evidence from archival X-ray, infrared, and radio data.

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