A 151 MHz Galactic plane survey

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

The Cambridge Low Frequency Synthesis Telescope (CLFST) is currently being used to undertake a systematic survey of the Galactic plane at a frequency of 151 MHz. Over the past four years observations covering the Galactic plane with |b| <= 5 deg between the Crab Nebula (near l = 180 deg) and Cyg A (near l = 70 deg) have been made, with a resolution of just over 1'. This is a relatively high survey resolution for such low frequency observations (cf. 5' resolution for the Effelsberg 2.7 GHz survey (Reich et al. (1990))). The CLFST is not merely limited to the detection of compact sources and since non- thermal sources are relatively bright at low frequencies the CLFST is an ideal instrument for imaging extended non-thermal structure on scales of arcmin to a few degrees, allowing the systematic study of a number of well-known supernova remnants (SNRs) which lie within the Galactic plane.

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