کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5496001 1529834 2017 20 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A new relativistic stellar model with anisotropic fluid in Karmarkar space-time
ترجمه فارسی عنوان
یک مدل ستاره ای نسبیتی جدید با مایع غیر انعطاف پذیر در فضا زمان کرمانشاه
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
چکیده انگلیسی
We are presenting a new class of well-behaved solutions in embedding class-I. We proceed our calculations by assuming a new type of grr metric potential and solved for the other metric gtt using Karmarkar condition. The necessary condition that any solutions of Einstein's field equations to be class-I is to satisfy Karmarkar condition and sufficient condition is to satisfy Pandey-Sharma condition i.e. R2323≠0. The solution also satisfies strong energy condition, null energy condition, dominant energy condition and weak energy condition. The obtained compactness parameter is within Buchdahl limit i.e. 2M/R≤8/9. The solution also satisfies the causality condition and can represent stable stellar fluid system as the adiabatic index Γ>4/3 and the stability factor holds −1≤vt2−vr2≤0 good. Finally, we have tuned our solution for two compact stars PSR J1614-2230 and 4U1608-52 which are well-behaved in all respects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Physics - Volume 377, February 2017, Pages 256-267
نویسندگان
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