X-ray surveys as tools to investigate the cosmological evolution of quasars, BL Lac objects and clusters of galaxiesA progress report on a major extension of the Einstein Observatory Medium Sensitivity Survey (MSS) is presented. The MSS consists of X-ray sources serendipitously discovered with the IPC on board the Einstein Observatory in the energy range 0.3-3.5 keV, at fluxes between 10 to the -11th and 10 to the -13th ergs/sq cm/s. The basic properties of the extragalactic sources identified with AGN and clusters of galaxies are discussed.
Document ID
19880042431
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gioia, Isabella M. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Maccacaro, Tommaso (Harvard-Smithsonian Center for Astrophysics, Cambridge, MA; CNR, Istituto di Radioastronomia Bologna, Italy)
Wolter, Anna (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)