scholarly journals Stellar structure and stability of charged interacting quark stars and their scaling behavior

2021 ◽  
Vol 104 (12) ◽  
Author(s):  
Chen Zhang ◽  
Michael Gammon ◽  
Robert B. Mann
Keyword(s):  
Scaling Behavior ◽  
Stellar Structure ◽  
Structure And Stability ◽  
Quark Stars

scholarly journals Stellar structure of quark stars in a modified Starobinsky gravity

2020 ◽  
Vol 80 (7) ◽  
Author(s):  
Arun Mathew ◽  
Muhammed Shafeeque ◽  
Malay K. Nandy
Keyword(s):  
Compact Stars ◽  
Stellar Structure ◽  
Spherically Symmetric ◽  
Matter Coupling ◽  
Binary Pulsars ◽  
Quark Stars ◽  
Equilibrium Configurations ◽  
Matter Interaction ◽  
Maximal Mass ◽  
Stellar Properties

Abstract We propose a form of gravity–matter interaction given by $$\omega RT$$ωRT in the framework of f(R, T) gravity and examine the effect of such interaction in spherically symmetric compact stars. Treating the gravity–matter coupling as a perturbative term on the background of Starobinsky gravity, we develop a perturbation theory for equilibrium configurations. For illustration, we take the case of quark stars and explore their various stellar properties. We find that the gravity–matter coupling causes an increase in the stable maximal mass which is relevant for recent observations on binary pulsars.

RADIAL OSCILLATIONS OF COLOR SUPERCONDUCTING QUARK STARS

2010 ◽  
Vol 19 (08n10) ◽  
pp. 1499-1504 ◽  
Author(s):  
C. VASQUEZ FLORES ◽  
G. LUGONES
Keyword(s):  
Quark Matter ◽  
Stellar Structure ◽  
Color Superconductivity ◽  
Quark Stars ◽  
Equilibrium Configurations ◽  
Oscillation Modes

In this work, we investigate the effect of color superconductivity in adiabatic radial oscillations of stars consisting of quark matter. We calculate the equilibrium configurations by integrating the Tolman–Oppenheimer–Volkoff equations of relativistic stellar structure and then we integrate the equations of relativistic radial oscillations to determine the oscillation modes.

SCALING PROPERTY IN COLD COMPACT STARS

2000 ◽  
Vol 15 (20) ◽  
pp. 1341-1346 ◽  
Author(s):  
R. SHARMA ◽  
S. MUKHERJEE ◽  
S. D. MAHARAJ
Keyword(s):  
Neutron Stars ◽  
Strange Quark ◽  
Scaling Behavior ◽  
Exotic Matter ◽  
Compact Stars ◽  
Bag Model ◽  
Model Calculations ◽  
Quark Stars ◽  
Scaling Property ◽  
Simple Scaling

We point out a simple scaling property in the mass–radius relationship in cold compact stars. This property my be considered as a generalization of the scaling observed by Witten for strange quark stars. A particular model which explicitly exhibits this scaling behavior has been discussed. The model is relevant for neutron stars as well as stars made up of exotic matter, in particular, quark stars and other composites based on Bag model calculations.

Strange Quark Matter as Dark Matter

2019 ◽  
Vol 22 (4) ◽  
pp. 311-317
Author(s):  
Hidezumi Terazawa
Keyword(s):  
Dark Matter ◽  
Quark Matter ◽  
Strange Quark ◽  
Strange Quark Matter ◽  
Quark Stars

New forms of matter such as super-hypernuclei (strange quark matter) and superhypernuclear stars (strange quark stars) as candidates for dark matter are discussed in some detail, based on the so-called "Bodmer–Terazawa–Witten hypothesis" assuming that they are stable absolutely or quasi-stable (decaying only weakly).

Polyplex: A Promising Gene Delivery System

2019 ◽  
Vol 12 (6) ◽  
pp. 4681-4686
Author(s):  
Rohan Aggarwal ◽  
Monika Targhotra ◽  
Bhumika Kumar ◽  
P.K Sahoo ◽  
Meenakshi K Chauhan
Keyword(s):  
Gene Transfer ◽  
Gene Delivery ◽  
Delivery System ◽  
Viral Vectors ◽  
Gene Delivery System ◽  
Cationic Polymers ◽  
Therapeutic Application ◽  
Promising Alternative ◽  
Structure And Stability ◽  
The Past

In the past few years gene delivery system has gained a huge attention owing to its proved efficacy in several diseases especially in those caused by genetic and/oroncological malfunctioning. The effective gene delivery mainly depends on the carrier molecules that can ensure the safe and specific delivery of the nucleic acidmolecules. Viral vectors have been used for a longer period as the gene transfer vehicle. However, these viral vectors have potential immunological disadvantages that made them less preferred. Recently, non-viral vectors such as polyplexes have emerged as a promising alternative for viral vectors. Polyplexes are formed by conjugating a polymer with DNA and in maximum cases the cationic polymers are preferred over others. The structure and stability of the polyplexes depends on various factors. The ability of the polymer to condense the DNA mainly dictates the efficiency of the polyplex mediated transfection. In this review we are going to provide a framework for the synthesis and design of the polyplexes along with the structure and stability of the complexes pertaining to mechanism of action, characterization and therapeutic application, including polyethyleneimine mediated cytotoxicity as well as newer strategies for the generation of better polyplexes.

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