Accession Number : AD0665885

Title :   MARCH 1966 OBSERVATIONS OF THE GALACTIC SPUR IN THE 20 TO 40 MHZ RANGE.

Descriptive Note : Environmental research papers no. 274,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Guidice,Donald A.

Report Date : OCT 1967

Pagination or Media Count : 54

Abstract : In March 1966 observations were made at the Arecibo Ionospheric Observatory to map the region of the Galactic Spur (North Polar Spur) in the 20-40 MHz range. Simultaneous observations were made at 38.75, 33.45, 26.70, and 22.30 MHz using a log-periodic feed, a four-way power divider, and individual null-balancing radiometers. Antenna half-power beamwidths were roughly 2.0 degrees at 38.75 and 3.3 degrees at 22.30 MHz. The observations were confined to the 2300-0500 local time period to minimize ionospheric effects. The area observed was between 12h and 16h right ascension, +32 degrees and +2 degrees declination. Results are given in the report.

Descriptors :   (*EXTRATERRESTRIAL RADIO WAVES, SOURCES), (*SUPERNOVAE, EXTRATERRESTRIAL RADIO WAVES), HIGH FREQUENCY, VERY HIGH FREQUENCY, ANTENNAS, RADIO ASTRONOMY, INTERSTELLAR MATTER, RADIOFREQUENCY INTERFERENCE

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE