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Narrow-line Seyfert 1 galaxies: an amasing class of AGN
Masers – Galaxies: active – Galaxies: nuclei – Galaxies: Seyfert – Radio lines: galaxies
2011/10/21
Narrow-line Seyfert 1 (NLS1) galaxies are a class of active galactic nuclei (AGN) that have all the properties of type 1 Seyfert galaxies but show peculiar characteristics, including the narrowest Bal...