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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The Southern Coalsack is located in the interior of the Upper Centaurus-Lupus(UCL) super bubble and shows many traits that point to a much more energeticenvironment than might be expected from a dark, starless molecular cloud. Ahot, X-ray emitting, envelope surrounds the cloud, it has a very stronginternal magnetic field and its darkest core seems to be on astronomical timescales "just about" to start forming stars. In order to probe the magneticenvironment of the cloud and to compare with the optical/near infraredpolarimetry-based field estimates for the cloud, we have acquired FaradayRotation measurements towards the pulsar PSR J1210$-$6550, probing the magneticfield in the vicinity of the cloud, and a comparison target, PSR J1435$-$5954,at a similar line of sight distance but several degrees from the cloud. Bothlines of sight hence primarily probe the UCL super bubble. The earlierestimates of the magnetic field inside the Coalsack, using theChandrasekhar-Fermi method on optical and near-infrared polarimetry, yieldB$_\perp$ = 64--93 $\mu$G. However, even though PSR J1210$-$6550 is locatedonly $\sim$30 arc minutes from the (CO) edge of the cloud, the measured fieldstrength is only B$_\parallel$ = 1.1$\pm$0.2 $\mu$G. While thus yielding a veryhigh field contrast to the cloud we argue that this might be understood as dueto the effects on the cloud by the super bubble.

On the magnetic field through the Upper Centaurs-Lupus Super bubble, in the vicinity of the Southern Coalsack