ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The observations were made on 3 April 1983 using the 305-m telescope at the Arecibo Observatory. Orthogonal circular polarizations were passed through 250-kHz Butterworth filters at a centre frequency of 431 MHz. Phase quadrature baseband mixers separated the signal into real and imaginary ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/306349a0