ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The class properties of BL Lacs are fairly well-defined, although this m^y "task an underlying heterogeneity which will retard oiir comprehension as it did previously with Seyferts, nebulae, or even stars. They are typically point-like (〈2 arc s) with the occasional case of extended optical or ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/318446a0
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