Astronomy with a new 100mK bolometer array for 150GHz

Details Astronomy with a new 100mK bolometer array for 150GHz Astronomy with a new 100mK bolometer array for 150GHz

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000nimpa.444..404g&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 444, Issue 1-2, p. 404-407.

Physics

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Scientific paper

At the Max-Planck-Institut für Radioastronomie we built a 19-channel bolometer array for 150GHz operating at 100mK. We give an overview of how our new bolometer array is installed at mm/submm telescopes. With results obtained during observing runs at the 10m HHT and the IRAM 30m-telescope we illustrate the performance of the instrument. Measurements of the Sunyaev-Zel'dovich effect (SZE) at mm-wavelength towards distant clusters of galaxies allow us to determine the Hubble constant and the radial cluster velocities. In the diffraction limit of a 10m telescope our instrument's beamwidth matches the size of many clusters of galaxies making it an ideal tool for observations of the SZE. As first measurements we observed the clusters CL0016+16 and A2218 and the blank sky as a control and we present preliminary results of the detection of the SZE.

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