Shadow Images of a Rotating Dyonic Black Hole with a Global Monopole Surrounded by Perfect Fluid

Universe

Sumarna Haroon¹  Mubasher Jamil¹  Kimet Jusufi² 

[1] Department of Mathematics, School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), Islamabad H-12, Pakistan;Physics Department, State University of Tetovo, Ilinden Street nn, Tetovo 1200, North Macedonia;

关键词: rotating black hole;    global monopole;    perfect fluid;    scalar field;    shadows;   

DOI  :  10.3390/universe6020023

来源: DOAJ

【 摘 要 】

In this paper, we revisit the rotating global monopole metric and extend the metric to a rotating dyonic global monopole in the presence of a perfect fluid. We then show that the surface topology at the event horizon, related to the metric computed, is a 2-sphere using the Gauss-Bonnet theorem. By choosing $\omega =-1/3,0,1/3$ we investigate the effect of dark matter, dust and radiation on the silhouette of a black hole. The presence of the global monopole parameter $\gamma$ and the perfect fluid parameters $\upsilon$ also deform the shape of a black hole’s shadow, which has been depicted through graphical illustrations. Finally, we analyse the energy emission rate of a rotating dyonic global monopole surrounded by perfect fluid with respect to parameters.

【 授权许可】

Unknown