Radio sources: angular size from scintillation studies.
The frequency spectrum of fluctuations caused by interplanetary scintillations may give a sensitive estimate of the diameter of a radio source. Observations of 3C 138, 3C 245, 3C 267, and 3C 273 give diameters of 0.1, </=0.04, </= 0.2, and </= 0.02 second of arc, respectively. Resolution is at least a factor of 5 higher than that obtained to date by means of either radio interferometers or lunar occulations.
Cohen
M H
MH
Gundermann
E J
EJ
Hardebeck
H E
HE
Harris
D E
DE
Salpeter
E E
EE
Sharp
L E
LE