Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...463l..47m&link_type=abstract
Astrophysical Journal Letters v.463, p.L47
Astronomy and Astrophysics
Astronomy
34
Cosmology: Cosmic Microwave Background, Cosmology: Observations, Infrared: Ism: Continuum
Scientific paper
We present the results of a diffuse radiation survey carried out at millimeter and submillimeter wavelengths in the Aries and Taurus sky regions. A balloon-borne telescope with 0.dg86 FWHM resolution and four millimeter-wave bands scanned 147 independent sky directions. From the multiband observations we were able to separate two independent components: thermal emission from cirrus dust and cosmic microwave background (CMB) temperature fluctuations. A statistically significant detection of anisotropies is found in the data of the CMB channel: Delta Tsky = (24 +/- 7) mu K rms (95% CL plus 10% calibration error). Assuming uncorrelated Gaussian temperature fluctuations we find a band averaged estimate of the CMB anisotropy power spectrum Cl = (20 +/- 9) mu K2 at l ~= 110. The data are consistent with anisotropies in a "standard" Omega b = 0.05, n = 1 model normalized to the rms anisotropy detected by COBE Differential Microwave Radiometers.
Aquilini Elisabetta
Boscaleri Andrea
de Bernardis Paolo
de Petris Marco
Gervasi Massimo
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