Spectrum of the cosmic background radiation at millimeter wavelengths

Journal Article · Mon Jul 15 00:00:00 EDT 1985 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.55.332· OSTI ID:5478036

Peterson, J B; Richards, P L; Timusk, T

We have measured the spectrum of the cosmic background radiation in five frequency bands extending from 2.3 to 11.0 cm/sup -1/ with a balloon-borne liquid-helium cooled pho- tometer. The photometer compares the flux from the sky to the flux from an internal blackbody at 3.2 K. All five measurements are consistent with temperatures in the range 2.78 +- 0.11 K, which is in good agreement with temperatures measured at lower frequencies. We find no significant deviation from a thermal spectrum.

• Research Organization: Department of Physics, University of California, Berkeley, California 94720
• OSTI ID: 5478036
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 55:3
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BACKGROUND RADIATION
RADIATION FLUX
BALLOONS
MICROWAVE SPECTRA
PHOTOMETERS
AIRSHIPS
MEASURING INSTRUMENTS
RADIATIONS
SPECTRA
640101* - Astrophysics & Cosmology- Cosmic Radiation