ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The observations were performed using the 100-m radiotele-scope at Effelsberg, near Bonn, between July and August 1983 (4.75-GHz data) and in July 1984 (10.7-GHz data). Both receivers (parametric amplifiers with Tsys = 70 K at 4.75 GHz and FET amplifiers with Tsys=100K at 10.7 GHz) were used in ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/317697a0
Permalink