Search for small-scale structure in the background radiation at 6 centimeters

Journal Article · Fri Jan 01 04:00:00 EST 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/165938· OSTI ID:5331932

Martin, H M; Partridge, R B

The results of a search for angular structure in 6 cm radio emission of the sky on scales less than 1 arcmin are presented. A deep VLA map of a field free of strong radio sources is found to contain structure beyond the expected contribution of faint discrete sources. This structure is unlikely to be due to purely instrumental effects, but the possibility of contamination by sidelobes of the radio sources in the field cannot be ruled out. In terms of the microwave background temperature T = 2.74 K, emission on scales between 18 and 160 arcsec has rms fluctuations Delta T/T of roughly 0.0002, with an upper limit of 0.0004. 25 references.

• Research Organization: Steward Observatory, Tucson, AZ (USA); Haverford College, PA (USA)
• OSTI ID: 5331932
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 324; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640106* -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANGULAR DISTRIBUTION
BACKGROUND RADIATION
COSMIC RADIO SOURCES
DISTRIBUTION
ELECTROMAGNETIC RADIATION
FOURIER TRANSFORMATION
INTEGRAL TRANSFORMATIONS
MICROWAVE RADIATION
MORPHOLOGY
RADIATIONS
RADIOWAVE RADIATION
RELICT RADIATION
TRANSFORMATIONS