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RATAN-600 and CMB Anisotropy: New RATAN-600 Limits

Published online by Cambridge University Press:  30 March 2016

Yu. N. Parijskij ,
B. L. Erukhimov ,
M. G. Mingaliev ,
V. N. Chernenkov ,
O. V. Verkhodanov  and
A. V. Chepurnov
Yu. N. Parijskij
Affiliation:
Special Astrophysical Observatory357147, Niznij Arkhyz Stavropol Territory, USSR
B. L. Erukhimov
Affiliation:
Special Astrophysical Observatory357147, Niznij Arkhyz Stavropol Territory, USSR
M. G. Mingaliev
Affiliation:
Special Astrophysical Observatory357147, Niznij Arkhyz Stavropol Territory, USSR
V. N. Chernenkov
Affiliation:
Special Astrophysical Observatory357147, Niznij Arkhyz Stavropol Territory, USSR
O. V. Verkhodanov
Affiliation:
Special Astrophysical Observatory357147, Niznij Arkhyz Stavropol Territory, USSR
A. V. Chepurnov
Affiliation:
Special Astrophysical Observatory357147, Niznij Arkhyz Stavropol Territory, USSR

Abstract

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We present new limits on the small scale 3 K emission anisotropy. At scales of 1°-3.3° all seven harmonics have amplitudes below 10-5 in ΔT/T at our wavelength of 7.6 cm. At the 6.1x103 to 17.5x103 (rad-1) scale, this limit is about 2.8x10-4 (at 2.7 cm wavelength) and the observations may be fully explained by contributions from discrete sources. The low baryonic content of the Universe and present limit on the ΔT/T at the horizon scale suggest that (ΔM/M)gravitating ≪ (ΔM/M)baryonic. speculate that the 3 K anisotropy measurements prove a) the existence of the dark matter, b) the nonbaryonic nature of this dark matter and c) that the space distribution of this matter is much more homogeneous than that of the visible one.

Type
Joint Discussions
Information
Highlights of Astronomy , Volume 9: Highlights of Astronomy. As presented at the XXIst General Assembly of the IAU, 1991 , 1992 , pp. 327 - 331
Copyright
Copyright © Kluwer 1992

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