IAU00157
Presentation type requested: ORAL
LARGE-SCALE RADIO CONTINUUM SURVEYS OF THE GALAXY
Wielebinski Richard
Max-Planck-Institut für Radioastronomie, Bonn
Studies of the fine structure of the Cosmic Microwave Background must take the Galactic foreground emission into account. We have been engaged in sensitive surveys of the Galactic continuum emission both in total intensity and polarization at several frequencies. These surveys present unique data base for the estimation of the contamination of the CMB by Galactic emission. We have produced well calibrated all-sky surveys at 45 MHz, 150 MHz, 408 MHz and 1400 MHz. The recent 1400 MHz survey with a resolution of 35'has good sensitivity.We have studied the spectral index between these surveys. The 1400 MHz southern survey has recorded fully sampled polarization data. In the northern sky we can use the Dwingeloo polarization data with recent additional calibration measures. Wide strips of the Galactic plane have been surveyed at 1.4 GHz and 2.3/2.7 GHz. We have now completed a northern Medium Latitude (b = +/-20°) Galactic Plane survey at 1.4 GHz. Additional maps of large fields at high Galactic latitudes were made to support the PLANCK and SPORT missions. Follow-up observations are planned both at higher frequencies and with Rotation Measure Polarimeters to allow the best determination of foreground effects for the CMB missions.
Wolfgang Reich , Patricia Reich , J.c. Testori
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