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 ideas that a sizable fraction of the interferometricallyunresolved infrared emission of the nucleus of NGC 1068 might originate fromother processes than thermal dust emission from the torus. We examine thecontribution of free-free or synchrotron emissions to the central mid- andnear-IR parsec-scale emitting region of NGC 1068. Each mechanism is constrainedwith parsec scale radio data available for NGC 1068 in the 10^9 - 10^11 Hzregime, and compared to the highest-resolution interferometric data availablein the mid-infrared. It is shown that the unresolved emission in theinterferometric observation (<~1pc) is still dominatedd by dust emission andnot by contributions from synchrotron or free-free emission. As recent studiessuggest, the interferometric observations prefer a clumpy structure of the dustdistribution. Extrapolation of the radio free-free or synchrotron emission tothe IR indicates that their contribution is <20% even for the unresolvedfraction of the interferometric flux. The slope of the available radio data isconsistent with a power law exponent alpha = 0.29 +/- 0.07 which we interpretein terms of either free-free emission or synchrotron radiation fromquasi-monochromatic electrons. We apply emission models for both mechanisms inorder to obtain physical parameters. (abridged)

High-Spatial Resolution SED of NGC 1068 from Near-IR to Radio. Disentangling the thermal and non-thermal contributions