The radio-source population at 100 GHz

Details The radio-source population at 100 GHz The radio-source population at 100 GHz

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007atnf.prop..887s&link_type=abstract

ATNF proposal C1392, Semester: April, 2007

Physics

Extragalactic, Atca

Scientific paper

Improving our knowledge of the radio-source population at 100 GHz is important (i) to interpret the data from future CMB missions, (ii) to identify 'extreme GPS' sources believed to represent the earliest (t<1000 yr) stages of radio-galaxy evolution, and (iii) to identify new mm calibrators for the ATCA and ALMA. Our C1392 observations in 2005 and 2006 showed that robust 3mm fluxes can be measured for continuum sources detected at 20 GHz in the AT20G survey, and that a significant fraction of AT20G sources have radio spectra which peak between 20 and 100 GHz. We now request time with the 3mm, 12mm and new 7mm system to determine the high-frequency spectra and fractional polarization of the 170 strongest southern 20 GHz sources (to characterize the point-source foreground for the Planck CMB mission); and to locate the spectral peaks in a sample of 40 candidate high-frequency GPS sources (to identify the youngest radio galaxies in the AT20G sample).

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