Fluctuations of the Microwave Background Radiation
Abstract
The primeval fluctuations of the microwave background are discussed with emphasis on adiabatic and entropy perturbations. Observations of the background impose stronger and stronger limits on the amplitude of the fluctuations. It is found that background fluctuations at centimeter and millimeter wavelength must exist at a level of Delta T/T approximately equal to .00001 independently of whether there was early secondary reheating of the intergalactic gas. At this level, fluctuations must be observed which are associated with known objects such as radio galaxies.
- Publication:
-
Large Scale Structures in the Universe
- Pub Date:
- 1978
- Bibcode:
- 1978IAUS...79..393S
- Keywords:
-
- Background Radiation;
- Cosmology;
- Extraterrestrial Radiation;
- Microwave Emission;
- Periodic Variations;
- Centimeter Waves;
- Entropy;
- Fluctuation Theory;
- Gas Heating;
- Intergalactic Media;
- Microwave Spectra;
- Perturbation Theory;
- Time Measurement;
- Astrophysics