The GINGA satellite and the large-scale structure of the Universe

Details The GINGA satellite and the large-scale structure of the Universe The GINGA satellite and the large-scale structure of the Universe

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992xrea.conf..362c&link_type=abstract

In MPI für Extraterrestrische Physik, X Ray Emission from Active Galactic Nuclei and the Cosmic X Ray Background p 362-367 (SEE

Astronomy and Astrophysics

Astronomy

Active Galactic Nuclei, Autocorrelation, Background Radiation, Cosmic X Rays, Cosmology, Galactic Clusters, Proportional Counters, Universe, X Ray Astronomy, Ginga Satellite, Isotropy, Radiant Flux Density

Scientific paper

The isotropy of the x-ray sky (4 to 12 keV) was tested on scales of 2 to 13 degrees, leading to an upper limit of about 0.00013 (95 percent) for the autocorrelation function at 2 degrees. This limit constrains clustering of active galactic nuclei and clusters of galaxies. To achieve this result, a set of pointed exposures of the Ginga LAC (Large Area proportional Counter) detector were used. A second set of scan data, also from Ginga, were analyzed, showing no significative signal at any scale below 2 degrees.

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