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 how stable circular orbits around a main compact object appeardepending on the presence of a second one by using the Majumudar--Papapetroudihole spacetime, which consists of the two extremal Reissner--Nordstr\" omblack holes with different masses. While the parameter range of the separationof the two objects is divided due to the appearance of stable circular orbits,this division depends on its mass ratio. We show that the mass ratio rangeseparates into four parts, and we find three critical values as the boundaries.

Effect of a second compact object on stable circular orbits