Comparison of the COBE DMR and Tenerife Data

C. H. Lineweaver, S. Hancock, G. F. Smoot, A. N. Lasenby, R. D. Davies, A. J. Banday, C. M. Gutierrez de La Cruz, R. A. Watson, R. Rebolo
1995 Astrophysical Journal  
We have compared the Tenerife data with the COBE DMR two-year data in the declination +40 region of the sky observed by the Tenerife experiment. Using the Galactic plane signal at ∼ 30 GHz, we show that the two data sets are cross-calibrated to within 5 investigated for the presence of common structures with the properties of cosmic microwave background (CMB) fluctuations. The most prominent feature in the Tenerife data (Δ T ∼ 80μK) is evident in both the 53 and 90 GHz DMR maps and has the
more » ... kian spectrum expected for CMB anisotropy. The cross-correlation function of the Tenerife and DMR scans is indicative of common structure and at zero lag has the value C(0)^1/2=34^+13_-15 μK. The combination of the spatial and spectral information from the two data sets is consistent with the presence of cosmic microwave background anisotropies common to both. The probability that noise could produce the observed agreement is less than 5
doi:10.1086/175978 fatcat:yuo7koulina7vmqg7tejpdrefy