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

We investigate the horizon structure and ergosphere in a rotating Bardeenregular black hole, which has an additional parameter ($g$) due to magneticcharge, apart from mass ($M$) and rotation parameter ($a$). Interestingly, foreach value of parameter $g$, there exist a critical rotation parameter($a=a_{E}$), which corresponds to an extremal black hole with degeneratehorizons, while for $a<a_{E}$ describes a non-extremal black hole with twohorizons, and no black hole for $a>a_{E}$. We find that the extremal value$a_E$ is also influenced by the parameter $g$ and so is the ergosphere. Whilethe value of $a_E$ remarkably decreases when compared with the Kerr black hole,the ergosphere becomes more thick with increase in $g$. We also study collisionof two equal mass particle near the horizon of this black hole, and explicitlybring out the effect of parameter $g$. The center-of-mass energy ($E_{CM}$) notonly depends on rotation parameter $a$, but also on parameter $g$. It isdemonstrated that the $E_{CM}$ could be arbitrary high in the extremal caseswhen one of the colliding particle has critical angular momentum, therebysuggesting that the rotating Bardeen regular black hole can act as a particleaccelerator.

Horizon structure of rotating Bardeen black hole and particle acceleration