ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] PERHAPS the greatest impediment to understanding active galactic nuclei, the black-hole driven cores of quasars, Seyfert galaxies and blazars, is the con-spicuous absence of periodic signals in their emissions. In contrast, numerous exotic, compact objects in our Galaxy, such as pulsars, accreting ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/361203a0
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