3-mm Anisotropy Measurement and the Quadrupole Component in the Cosmic Background Radiation

Abstract

The large-scale anisotropy in the cosmic background radiation has been measured at 3-mm wavelength with a liquid-helium-cooled balloon-borne radiometer sensitive enough to detect the dipole in one gondola rotation (1 min). Statistical errors on the dipole and quadrupole components are below 0.1 mK with less than 0.1 mK galactic contribution. The authors find a dipole consistent with previous measurements but disagree with recent quadrupole reports. The measurement is also useful in the search for spectral distortions.

Doppler spectroscopy on relativistic particle beams in the light of a test theory of special relativity

“…The ether frame 27 is usually identified with the reference frame in which the cosmological microwave radiation background is completely isotropic. It is estimated [12] that in this reference frame the velocity of the solar system and thus the velocity of terrestrial laboratory systems is of the order of 300 km/s.…”

“…In order to find out whether or not c~ ~ (v 2 -v' 2) differs from zero, the frequencies vR, VA, and v B must be determined with the greatest possible precision 9 To obtain ~ the values of v and v' must be known. Assuming that the ether frame 27 can be identified with the reference frame in which the cosmic microwave background is completely isotropic, the speed v' of the laboratory frame ~' relative to the ether frame 27 can be estimated from the observed small dipole anisotropy of the cosmic microwave background to be on the order of 300 km/s [12] with small periodic variations due to the orbital motion of the earth around the sun and due to the earth's rotation since the difference between (5.5) and (5.6) would contribute only in a higher order approximation. The experiment is designed so that the ion velocity w' relative to the laboratory frame is kept constant in time.…”

Tests of Lorentz Invariance using a Microwave Resonator

“…In special relativity ÿ1=2; 1=2; 0, and (1) reduces to the usual Lorentz transformations. Generally, the best candidate for is taken to be the frame of the cosmic microwave background (CMB) [17,18] with the velocity of the solar system in that frame taken as v 377 km=s, declination ÿ6:4 , and right ascension RA 11:2h.…”

Electromagnetic detector for relic axions

“…Cosmic microwave background signals have been measured to millidegree levels, which are two orders of magnitude smaller than required for this experiment, but the system bandwidth was much larger and no cavities were involved (Lubin et al 1983).…”