Stellar filaments in self-interacting Brans–Dicke gravity

The European Physical Journal C

M. Sharif¹  Rubab Manzoor² 

[1] Department of Mathematics, University of the Punjab, Quaid-e-Azam Campus, 54590, Lahore, Pakistan;Department of Mathematics, University of the Punjab, Quaid-e-Azam Campus, 54590, Lahore, Pakistan;Department of Mathematics, University of Management and Technology, Johar Town Campus, 54782, Lahore, Pakistan;

关键词: Scalar Field;    Filamentary Structure;    Radial Oscillation;    Polytropic Index;    Finite Radius;   

DOI  :  10.1140/epjc/s10052-016-4113-x

来源: Springer

【 摘 要 】

This paper is devoted to the study of the cylindrically symmetric stellar filaments in self-interacting Brans–Dicke gravity. For this purpose, we construct polytropic filamentary models through a generalized Lane–Emden equation in the Newtonian regime. The resulting models depend upon the values of the cosmological constant (due to the scalar field) along with the polytropic index and represent a generalization of the corresponding models in general relativity. We also investigate the fragmentation of the filaments by exploring the radial oscillations through a stability analysis. This stability criterion depends only upon the adiabatic index.

【 授权许可】

CC BY