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 make use of the Lagrangian description of fluid motion to highlightcertain features in the context of spacetime geometry as emergent phenomena influid systems. By using Lagrangian Perturbation Theory (LPT), we find that ifthe flow is not barotropic it will not be locally irrotational, and as aresult, emergent gravity can not be realised for such flow. Our work gives anew perspective of examining the perturbations in a fluid from a differentapproach (other than Eulerian approach) which is the way of using LagrangianPerturbation Theory. We make use of Lagrangian description of motion to examinethe propagation of Eikonal wave (wave having very short wavelength) from thereference frame of the observer moving with the background flow. We find thatwaves of ultra short wavelength propagate similar to waves in a static uniformmedium in the near vicinity of the observer. We restrict ourselves tononrelativistic flows in astrophysical black hole accretion.

Lagrangian Description of Accreting Black Hole Systems in the Context of Emergent Spacetime