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- W3105292215 abstract "An increasing number of AGNs exhibit broad, double-peaked Balmer emission lines, which are thought to arise from the outer regions of the accretion disk which fuels the AGN. The line profiles are observed to vary on a characteristic timescales of 5-10 years. The variability is not a reverberation effect; it is a manifestation of physical changes in the disk. Our group has monitored a set of 20 double-peaked emitters for the past 8 years (longer for some objects). Here, we characterize the variability of the double-peaked H alpha line profiles in five objects from our sample. By experimenting with simple models, we find that disks with a single precessing spiral arm are able to reproduce many of the variability trends that are seen in the data." @default.
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- W3105292215 date "2004-04-16" @default.
- W3105292215 modified "2023-10-18" @default.
- W3105292215 title "Long-term profile variability of double-peaked emission lines in AGNs" @default.
- W3105292215 hasPublicationYear "2004" @default.
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