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Astron. Astrophys. 350, 447-456 (1999)

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1. Introduction

The results of a sensitive, radio continuum survey of the Galactic Plane were presented by Reich et al. (1984). This survey, observed with the 100-m Effelsberg radio telescope at a frequency of 2.695 GHz, combined a high resolution, good sensitivity and polarimetric capabilities, and covered almost [FORMULA] of Galactic longitude. Specifically, this work examined Galactic longitudes of [FORMULA], with a latitude range of [FORMULA].

In addition to the total-power work presented by Reich et al. (1984), maps of the linearly polarised emission with a resolution of [FORMULA] were analyzed and presented by Junkes et al. (1987a, 1987b). It was this work which first revealed the presence of diffuse polarised emission on small angular scales, and that this emission was distributed in a "patchy" manner (see also Wieringa et al. 1993). It is important to note that the Junkes et al. work was restricted to a latitude range of [FORMULA].

Over the next few years, as interpretation of this original polarimetric data continued (see Junkes et al. 1990), the Effelsberg 2.695 GHz survey also progressed. Reich et al. (1990b) presented total-power maps of the radio emission over longitudes of [FORMULA] (approximately the same longitude range as the Reich et al. 1984work), but with a latitude coverage of [FORMULA]. Fürst et al. (1990) extended the longitude coverage further still, so that the total-power survey now images [FORMULA] in longitude, and out to [FORMULA] in latitude. No more polarimetric data were reduced, however.

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© European Southern Observatory (ESO) 1999

Online publication: October 4, 1999
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