Quasi static evolution of compact objects in modified gravity
نویسندگان
چکیده
In this paper, the quasi static-approximation on hydrodynamics of compact objects is proposed in $f(R, T)$ gravity, where $R$ scalar curvature and $T$ trace stress-energy tensor, by exploring axial reflection symmetric space time stuffed with anisotropic dissipative matter contents. The set invariant-velocities defined to comprehend concept static-approximation. As a consequence, evolution shown analyzing corresponding modified field, dynamical equations approximation evoke all feasible outcomes. Furthermore, significance kinematical quantities, heat-fluxes variables are found through approximation.
منابع مشابه
Relativistic gravity, compact objects and strong-field gravity
This is a semi-technical presentation of the succession of events that led Einstein to formulate his theory of general relativity. We present an overview of the field of relativistic astrophysics and motivate the study of compact objects (such as neutrons stars and black holes) as strong-field gravity probes for testing possible modifications to general relativity. 1 A PANORAMA OF PHYSICS BEFOR...
متن کاملEvolution of Binary Compact Objects Which Merge
Beginning from massive binaries in the Galaxy we evolve black–hole, neutron–star binaries and binary neutron stars, such as the Hulse–Taylor system PSR 1913+16. The new point in our evolution is a quantitative calculation of the accretion of matter by a neutron star in common envelope evolution which sends it into a black hole. We calculate the mass of the latter to be ∼ 2.4 M⊙. The black hole ...
متن کاملThreshold-based quasi-static brittle damage evolution
We introduce models for static and quasi-static damage in elastic materials, based on a strain threshold, and then investigate the relationship between these threshold models and the energy-based models introduced in [17] and [15]. A somewhat surprising result is that, while classical solutions for the energy models are also threshold solutions, this is not the case for nonclassical solutions, ...
متن کاملYoung-measure Quasi-static Damage Evolution
An existence result for the quasi-static evolution of incomplete damage in elastic materials is presented. The absence of gradient terms in the damage variable causes a critical lack of compactness. Therefore, the analysis is developed in the framework of Young measures, where a notion of solution is defined, presenting some improvements with respect to previous contributions. The main new feat...
متن کاملScale invariant gravity and the quasi-static universe
We highlight the fact that the lack of scale invariance in the gravitational field equations of General Relativity results from the underlying assumption that the appropriate scale for the gravitational force should be linked to the atomic scale. We show that many of the problems associated with cosmology and quantum gravity follow directly from this assumption. An alternative scale invariant p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: General Relativity and Gravitation
سال: 2022
ISSN: ['0001-7701', '1572-9532']
DOI: https://doi.org/10.1007/s10714-021-02887-z