Large scale shearing of the universe from Ariel V X-ray data

Details Large scale shearing of the universe from Ariel V X-ray data Large scale shearing of the universe from Ariel V X-ray data

Jun 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980phys...21..650f&link_type=abstract

(University of Copenhagen, Danish Research Council and Nordisk Institut for Teoretisk Atomfysik, Copenhagen Symposium on the Uni

Astronomy and Astrophysics

Astronomy

6

Ariel 5 Satellite, Background Radiation, Microwave Emission, Universe, X Ray Sources, Anisotropy, Data Processing, Galactic Radiation, Milky Way Galaxy, Perturbation Theory, Radio Astronomy, Sky Surveys (Astronomy), Spaceborne Astronomy

Scientific paper

An analysis of 25 scans by the Ariel V sky survey instrument has revealed a galactic contribution to the X-ray background of between 2.5 and 7.2% between galactic latitudes of 90 and 20 degrees, respectively. In addition, a 90% confidence upper limit of delta v less than 475 km/s (delta v=200 plus 175 or minus 195 km/s) in the direction of the microwave anisotropy. Significantly, an oblate 12 h X-ray variation with a pole common to the 24 h microwave variation is detected, suggesting the presence of a matter perturbation of more than 1% over a scale greater than 3000 Mpc.

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