Large-scale anisotropy in the 2.7K radiation.
Abstract
The paper reports the results of two balloon flights, covering half the sky, to measure the large-scale anisotropy of the 2.7 K cosmic radiation. Radiometers at three wavelengths give results which are well fitted by a dipole distribution with amplitude 2.99 plus or minus 0.34 mK and direction R.A. = 12.3h plus or minus 0.4h and decl. = -1 deg plus or minus 6 deg. An upper limit of 2 mK (95% confidence) is found for the amplitudes of nonpolar components of a quadrupole distribution.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1979
- DOI:
- 10.1086/183052
- Bibcode:
- 1979ApJ...232L.139C
- Keywords:
-
- Anisotropy;
- Astrometry;
- Balloon Flight;
- Cosmic Rays;
- Galactic Radiation;
- Background Radiation;
- Cosmology;
- Error Analysis;
- Microwave Radiometers;
- Quadrupoles;
- Space Radiation;
- Background Radiation:Isotropy;
- Microwave Background