English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We investigate the possibility of an intrinsic Baldwin Effect (i.e.,nonlinearemission-line response to continuum variations) in the broad H-beta emissionline of the active galaxy NGC 5548 using cross-correlation techniques to removelight travel-time effects from the data. We find a nonlinear relationshipbetween the H-beta emission line and continuum fluxes that is in good agreementwith theoretical predictions. We suggest that similar analysis of multiplelines might provide a useful diagnostic of physical conditions in thebroad-line region.Comment: 15 pages, 4 figures. Accepted for publication in The Astrophysical  Journa

An Intrinsic Baldwin Effect in the Hβ Broad Emission Line in the Spectrum of NGC 5548