The Variability of Hardness Ratio 1 observed by ROSAT: Narrow-Line Seyfert 1 Galaxies versus Broad-Line Seyfert 1 Galaxies
- 1 June 2002
- journal article
- Published by IOP Publishing in Chinese Journal of Astronomy and Astrophysics
- Vol. 2 (3) , 207-215
- https://doi.org/10.1088/1009-9271/2/3/207
Abstract
No abstract availableKeywords
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