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

The association of very-high energy sources with regions of the sky rich indust and gas has been noticed in the study of individual VHE sources. However,the statistical significance of such correlation for the whole population ofTeV detections has not been assessed yet. Here we present a study of theassociation of VHE sources in the central Galactic region with positions ofenhanced material content. We obtain estimates of the material content throughtwo classical tracers: dust emission and intensity of the$^\textrm{12}$CO(1$\rightarrow$0) line. We make use of the recently releasedall-sky maps of astrophysical foregrounds of the Planck Collaboration and ofthe extensive existing CO mapping of the Galactic sky. In order to test thecorrelation, we construct randomized samples of VHE source positions startingfrom the inner Galactic plane survey sources detected by the H.E.S.S. array. Wefind hints of a positive correlation between positions of VHE sources andregions rich in molecular material, which in the best of cases reaches the3.9sigma level. The latter confidence is however decreased if variations in theselection criteria are considered, what lead us to conclude that a positivecorrelation cannot be firmly established yet. Forthcoming VHE facilities willbe needed in order to firmly establish the correlation.

On the possible correlation of Galactic VHE source locations and enhancements of the surface density in the Galactic plane