出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We have observed the Corona Borealis Supercluster with the Millimeter and Infrared Testa grigia
Observatory (MITO) at 143, 214, 272, and 353 GHz. We present a description of the measurements,
data analysis, and results together with a comparison of observations performed at 33 GHz
with the Very Small Array (VSA). Observations have been made in a region of the supercluster
corresponding to one Cosmic Microwave Background (CMB) cold spot previously detected in
VSA temperature map. Observational strategy and data analysis are described, explaining the
procedures used to disentangle primary and secondary anisotropies in the resulting maps. With a
data analysis using map making and the maximum entropy method we claim a weak detection of
a faint signal spectrally compatible with a SZ effect characterized at most by a Comptonization
parameter y = (7.8+5.3
−4.4)×10−6 68% CL. The low level of confidence in the presence of a SZ signal
invites us to study this sky region with higher sensitivity and angular resolution experiments
like the already planned upgraded versions of VSA and MITO.
