ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The Seyfert galaxy NGC4151 observed when the nucleus is at a minimum has two emission lines of full width at half maximum 〈7 and 16 Å respectively and varying in intensity by a factor of three in 10 days. These lines are too narrow to be emitted by the whole broad-line region and must ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/313747a0
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