The Spectral Energy Distributions of Narrow-Line Seyfert 1 Galaxies | Zendy

Karen M. Leighly | Zendy

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The Spectral Energy Distributions of Narrow-Line Seyfert 1 Galaxies

Author(s) -

Karen M. Leighly

Publication year - 2004

Publication title -

progress of theoretical physics supplement

Language(s) - English

Resource type - Journals

ISSN - 0375-9687

DOI - 10.1143/ptps.155.223

Subject(s) - galaxy , astrophysics , physics , spectral energy distribution , range (aeronautics) , spectral properties , spectral power distribution , line (geometry) , spectral analysis , spectral line , spectral slope , astronomy , optics , spectroscopy , materials science , geometry , mathematics , composite material

Narrow-line Seyfert 1 galaxies are identified by their uniform opticalspectral properties. Studies of samples of NLS1s reveal, however, a range ofX-ray spectral and variability behavior, and UV spectral behavior. We describethe range of behavior observed, illustrating with a comparison of theXMM-Newton and HST data from the NLS1s 1H0707-495 and TonS180, and discuss howthe spectral energy distribution may causally link the UV and X-ray properties.Comment: 8 pages, 6 figures, 1 color figure, invited contribution for the conference "Stellar-mass, Intermediate-mass, and Supermassive Black Holes", held in Kyoto, Japan, October 28-31, 2003, to be published in Progress of Theoretical Physics Supplemen

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