مشخصات پژوهش

عنوان	Role of f (T ,Θ) gravity on dynamical instability of collapsing star
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	f (T , θ) gravity Dynamical equations Instability range Adiabatic index
چکیده	In this paper, we find the instability ranges of a spherical symmetric structure of a collapsing object in f (T ,Θ) theory of gravity. Here, T represents the torsion scalar whileΘ is the trace of energy–momentum tensor. For this purpose, we use perturbation method up to first order in the modified field equations as well as in the dynamical equations to construct a collapse equation. The collapse equation with adiabatic index Γ is used to explore the instability ranges in Newtonian and post-Newtonian approximations. It turns out that the instability ranges depend on the dynamical variables of collapsing object.
پژوهشگران	عبدل جواد (نفر اول)، تنزیلا نواز (نفر دوم)، شامایلا رانی (نفر سوم)، رباب منظور (نفر چهارم)، هومان مرادپور (نفر پنجم)