A High-Resolution Survey of the Coma Cluster of Galaxies at 408 Mc./s.

Details A High-Resolution Survey of the Coma Cluster of Galaxies at 408 Mc./s. A High-Resolution Survey of the Coma Cluster of Galaxies at 408 Mc./s.

Jun 1959

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1959natur.183.1663l&link_type=abstract

Nature, Volume 183, Issue 4676, pp. 1663-1664 (1959).

Computer Science

31

Scientific paper

IN December 1958 an area of sky including the Coma cluster of galaxies was surveyed using the 250-ft. radio telescope at Jodrell Bank1 with a Dicke-type radiometer, pass-band 408 +/- 2 Mc./s., and noise figure 6 db. The beam was elliptical, having half-power widths of 40 and 56 minutes of arc. The system was calibrated using the radio source 14N5A, which was assumed to have a flux of 47 × 10-26 W. m.-2 (c./s.)-1 (ref. 2). The intensity contours for the region are shown in Fig. 1; Fig. 2 is a sample scan through the cluster and Table 1 gives the fluxes and positions of sources which can be resolved from the extremely complex background.

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