... SIGMA telescope . SIGMA is the coded-mask telescope capable to get images and spectra in the 30-1000 keV energy range with ~10' angluar resolutiuon and the field of view (fully coded) of 4.3X4.7 degrees. SIGMA assembly to GRANAT satellite is shown here . ... SIGMA view of the galactic plane (220K) . ... The Sigma telescope - A decisive step in high energy astronomy // L'Aeronautique et l'Astronautique (1990) NASA ADS . The SIGMA telescope on the CESR. ... 2016 IKI RAN ...
Lack of co oling flow clusters at z 0.5 A. Vikhlinin1,2 , R. Burenin2 , W. R. Forman1 , C. Jones1 , A. Hornstrup3 , S. S. Murray1, and H. Quintana4 1 2 3 4 Harvard-Smithsonian ... Astronomia y Astrofisica, Pontificia Universidad Catolica de Chile The goal of this work is to study the incidence rate of co oling flows in the high redshift clusters using Chandra observations of z 0.5 ob jects from a new large, ... Fig. ... Lack of "cooling flow" clusters at z > 0.5 3 Fig. ...