Does the inner broad-line region DIM down when the power turns up?

Details Does the inner broad-line region DIM down when the power turns up? Does the inner broad-line region DIM down when the power turns up?

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...404..570s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 404, no. 2, p. 570-575.

Astronomy and Astrophysics

Astrophysics

36

Astronomical Photometry, Emission Spectra, Galactic Radiation, Line Spectra, Seyfert Galaxies, Autocorrelation, Cross Correlation, Time Lag, Ultraviolet Photometry

Scientific paper

The temporal correlations of continuum and broad emission-line fluxes from the Seyfert galaxy NGC 5548 as measured during the 1989 monitoring campaign show two related peculiarities: first, some of the crosscorrelations of line and continuum flux appear steeper on the negative time lag side than the continuum autocorrelation itself; then, the autocorrelation of the line flux is sometimes more sharply peaked than the continuum autocorrelation function. These are here interpreted as evidence that conditions in the inner part of the broad-line region are such that some emission lines decrease in intensity as the continuum strengthens.

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