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 argue that the X-ray and UV flux illuminating the parsec-scale accretiondisk around luminous active galactic nuclei (AGN) is super-Eddington withrespect to the local far-infrared dust opacity. The far infrared opacity may belarger than in the interstellar medium of the Milky Way due to a combination ofsupersolar metallicity and the growth of dust grains in the dense accretiondisk. Because of the irradiating flux, the outer accretion disk puffs up with avertical thickness $h\sim R$. This provides a mechanism for generating ageometrically thick obscuring region from an intrinsically thin disk. We findobscuring columns $\sim 10^{22} - 10^{23} {\rm cm}^{-2}$, in reasonableagreement with observations.Comment: 8 pages, 4 figures, accepted to ApJ. changes made from suggestion by  the refere

From Thin to Thick: The Impact of X‐Ray Irradiation on Accretion Disks in Active Galactic Nuclei