| Autor: |
Saikia, D.J., Thomasson, P., Roy, S., Pedlar, A., Muxlow, T.W.B. |
| Předmět: |
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| Zdroj: |
Monthly Notices of the Royal Astronomical Society; 11/1/2004, Vol. 354 Issue 3, p827-838, 12p |
| Abstrakt: |
We present high-resolution radio observations of a sample of 65 radio sources at low Galactic latitudes. The sources were all observed at 5 GHz with the Very Large Array A-array. Multi-Element Radio Linked Interferometer Network (MERLIN) observations at 5 GHz of the ultracompact H iiregion G34.26+0.15 and one of the extragalactic sources, B1857−000, are also presented, as are Giant Metrewave Radio Telescope (GMRT) observations of H iin the direction of three sources, B1801−203, B1802−196 and B1938+229. These observations were made with the objectives of (i) finding compact components suitable for studying the effects of interstellar scattering at lower frequencies, (ii) identifying high surface brightness lobes of background radio sources to probe the Galactic magnetic field on different scales via polarization observations, and (iii) searching for young supernova remnants. We discuss the nature of the sources found to have shell or shell-like structure and exhibiting both thermal and non-thermal spectra. Of the remaining sources, B1749−281 is coincident within the positional errors of a known pulsar, not detected earlier at 5 GHz. The rest are likely to be background extragalactic objects. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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