Sentences with phrase «previous radio observations»
Nodland and Ralston said that their analysis of previous radio observations of 160 galaxies, made in the 1970s and 1980s, showed that radiation coming from objects had its direction of polarization rotated by different amounts, depending on the direction of the galaxies.
https://public.nrao.edu/ Not exact matches
Previous observations had suggested that very - low - frequency (VLF) radio waves (from 5 to 25 kilohertz) transmitted on Earth were helping to clear particles from the inner belt.
Abstract: A follow - up X-ray study was made of the west lobe of the radio galaxy Fornax A, (NGC 1316) based on new ASCA observations made in 1997 for 98 ks, and incorporating the previous observation in 1994 for 39 ks.