Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.263..693s&link_type=abstract
In ESA Proceedings of an International Symposium on New Insights in Astrophysics. Eight Years of UV Astronomy with IUE p 693-69
Astronomy and Astrophysics
Astrophysics
Astronomical Models, Galactic Nuclei, Galactic Radiation, Line Spectra, Ultraviolet Spectra, Accretion Disks, Iue, Spectral Line Width, Time Lag
Scientific paper
The Duelling Wind Model is used to interpret broad line regions (BLR) in IUE data of source NGC 4151. Line intensities, widths, and response times are all consistent with a 2 million solar mass central engine, an active phase luminosity close to the Eddington limit and a broad line density maximum of 10 to the 12th power cc at a radius of 2 times 10 to the 16th power cm. It is shown how the delayed response of the line emission to the continuum can be used to test the model. Besides a 5 day speed-of-light time lag, the emission line strength responds to the previous 100 to 200 days of nuclear activity (due to the density of the disk wind). This appears in the cross-correlated data of Gaskell and Sparke (1986) and can be distinguished from an alternative explanation, an extended BLR, through the associated response of the line shape and width.
Raine Derek J.
Smith Masson D.
No associations
LandOfFree
UV emission lines in galactic nuclei: Predictions from the duelling wind model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with UV emission lines in galactic nuclei: Predictions from the duelling wind model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and UV emission lines in galactic nuclei: Predictions from the duelling wind model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1295174