Advances in Astronomy

Relativistic Aspects of Stellar Structures and Modified Theories of Gravity


Publishing date
01 Aug 2021
Status
Closed
Submission deadline
19 Mar 2021

1National University of Computer and Emerging Sciences, Islamabad, Pakistan

2The Islamia University, Bahawalpur, Pakistan

3University of Tartu, Tartu, Estonia

This issue is now closed for submissions.
More articles will be published in the near future.

Relativistic Aspects of Stellar Structures and Modified Theories of Gravity

This issue is now closed for submissions.
More articles will be published in the near future.

Description

In the last two decades, modified theories of gravity have attracted much. These modified/alternative theories of gravity have played an important role in investigating some hidden facts of the universe. After being motivated by the original theory and using some complex lagrangians, modified theories like f(R), f(R,T), f(G), f(R,G), f(G,T), have been structured, where R denotes the Ricci scalar, G is the Gauss-Bonnet term, and T is the trace of stress energy tensor.

In astrophysics, stellar structures are generally referred to as white dwarfs, neutron stars including hybrid and quark stars, wormholes, and black holes. White dwarfs and neutron stars originated due to the degeneracy pressure produced by the fundamental particles responsible for their formation. The study of stellar structures in the context of modified theories of gravity is an interesting topic of discussion. The possibility of high radii and masses of neutron stars is an interesting question in the framework of modified gravity. In recent years, the investigation of the existence of wormholes has also been an interesting and attractive topic for researchers. Wormholes are assumptive tube-like geometrical structures connecting two widely separated asymptotically flat universes, or two different asymptotically flat portions of the same universe and have no horizon. The possible existence of exotic or non-exotic matter wormhole solutions in modified theories of gravity is a very interesting debate. In addition to the above-mentioned interesting topics, the bouncing cosmologies are alternative models of the Big Bang scenario. The discussion of bouncing cosmology in modified theories may also be an attractive choice.

The aim of this Special Issue is to collate original research and review articles in this field.

Potential topics include but are not limited to the following:

  • Compact stars in modified gravity
  • Wormhole discussion in modified gravity
  • Cosmological solutions, in particular, the bouncing cosmology in modified gravity
  • Black hole solutions in modified gravity

Articles

  • Special Issue
  • - Volume 2021
  • - Article ID 5579060
  • - Research Article

Modification of Gravitational Field Equation due to Invariance of Light Speed and New System of Universe Evolution

Jian Liang Yang
  • Special Issue
  • - Volume 2021
  • - Article ID 8852581
  • - Research Article

Bouncing Cosmology in Gravity with Logarithmic Trace Term

M. Farasat Shamir
  • Special Issue
  • - Volume 2021
  • - Article ID 6685578
  • - Research Article

A Generic Embedding Class-I Model via Karmarkar Condition in Gravity

M. Zubair | Saira Waheed | Hina Javaid
  • Special Issue
  • - Volume 2021
  • - Article ID 6663502
  • - Research Article

Compact Stars Admitting Noether Symmetries in Energy-Momentum Squared Gravity

M. Sharif | M. Zeeshan Gul
  • Special Issue
  • - Volume 2021
  • - Article ID 6698208
  • - Research Article

Model of Charged Anisotropic Strange Stars in Minimally Coupled Gravity

H. Nazar | G. Abbas
  • Special Issue
  • - Volume 2020
  • - Article ID 3930947
  • - Research Article

Light Speed Invariant Solution and Its Enlightenment of Field Equation of General Relativity

Jian Liang Yang
  • Special Issue
  • - Volume 2020
  • - Article ID 8813611
  • - Research Article

Wormhole Models and Energy Conditions in Gravity with the Hu–Sawicki Model

Ouziala Ikram | G. Mustafa
  • Special Issue
  • - Volume 2020
  • - Article ID 8861168
  • - Research Article

Isotropic Gravastar Model in Rastall Gravity

G. Abbas | K. Majeed
  • Special Issue
  • - Volume 2020
  • - Article ID 6146913
  • - Research Article

Nucleonic Direct Urca Processes and Cooling of the Massive Neutron Star by Antikaon Condensations

Yan Xu | Wen Bo Ding | ... | J. L. Han
Advances in Astronomy
 Journal metrics
Acceptance rate26%
Submission to final decision37 days
Acceptance to publication63 days
CiteScore2.800
Impact Factor2.353
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