We have modelled a neutral non-homogeneous anisotropic stellar compact object with two distinct equations of state in general relativity framework. We have considered the macroscopic features of a general relativistic gravitating compact object. The equation of state is quadratic in the core and linear in the envelope. There is smooth matching between the core, envelope and the vacuum exterior regions. We found the masses, radii and compactness of some compact objects such PSR J1614-2230, PSR J1903+0327, Vela X-1, SMC-X-1, Cen X-3; which are in agreement with previous investigations. The gravitational potentials and the matter variables are well behaved throughout the stellar structure. We present in particular the variation of the radius in the core and the envelope of the star by changing some parameters values. Physical features of the pulsars PSR J1614-2230 are presented in more details. It observed that the radial pressure in the core is higher than the radial pressure in the envelope. The investigation reveals that the model is physically relevant for the study of observed compact stars.
| Published in | American Journal of Electromagnetics and Applications (Volume 8, Issue 1) |
| DOI | 10.11648/j.ajea.20200801.12 |
| Page(s) | 12-17 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2020. Published by Science Publishing Group |
General Relativity, Compact Star, Equation of State
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APA Style
Daddy Balondo Iyela, Nestor Anzola Kibamba. (2020). Compact Stellar Model with Two Different Equations of State. American Journal of Electromagnetics and Applications, 8(1), 12-17. https://doi.org/10.11648/j.ajea.20200801.12
ACS Style
Daddy Balondo Iyela; Nestor Anzola Kibamba. Compact Stellar Model with Two Different Equations of State. Am. J. Electromagn. Appl. 2020, 8(1), 12-17. doi: 10.11648/j.ajea.20200801.12
AMA Style
Daddy Balondo Iyela, Nestor Anzola Kibamba. Compact Stellar Model with Two Different Equations of State. Am J Electromagn Appl. 2020;8(1):12-17. doi: 10.11648/j.ajea.20200801.12
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Download@article{10.11648/j.ajea.20200801.12,
author = {Daddy Balondo Iyela and Nestor Anzola Kibamba},
title = {Compact Stellar Model with Two Different Equations of State},
journal = {American Journal of Electromagnetics and Applications},
volume = {8},
number = {1},
pages = {12-17},
doi = {10.11648/j.ajea.20200801.12},
url = {https://doi.org/10.11648/j.ajea.20200801.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajea.20200801.12},
abstract = {We have modelled a neutral non-homogeneous anisotropic stellar compact object with two distinct equations of state in general relativity framework. We have considered the macroscopic features of a general relativistic gravitating compact object. The equation of state is quadratic in the core and linear in the envelope. There is smooth matching between the core, envelope and the vacuum exterior regions. We found the masses, radii and compactness of some compact objects such PSR J1614-2230, PSR J1903+0327, Vela X-1, SMC-X-1, Cen X-3; which are in agreement with previous investigations. The gravitational potentials and the matter variables are well behaved throughout the stellar structure. We present in particular the variation of the radius in the core and the envelope of the star by changing some parameters values. Physical features of the pulsars PSR J1614-2230 are presented in more details. It observed that the radial pressure in the core is higher than the radial pressure in the envelope. The investigation reveals that the model is physically relevant for the study of observed compact stars.},
year = {2020}
}
TY - JOUR T1 - Compact Stellar Model with Two Different Equations of State AU - Daddy Balondo Iyela AU - Nestor Anzola Kibamba Y1 - 2020/02/25 PY - 2020 N1 - https://doi.org/10.11648/j.ajea.20200801.12 DO - 10.11648/j.ajea.20200801.12 T2 - American Journal of Electromagnetics and Applications JF - American Journal of Electromagnetics and Applications JO - American Journal of Electromagnetics and Applications SP - 12 EP - 17 PB - Science Publishing Group SN - 2376-5984 UR - https://doi.org/10.11648/j.ajea.20200801.12 AB - We have modelled a neutral non-homogeneous anisotropic stellar compact object with two distinct equations of state in general relativity framework. We have considered the macroscopic features of a general relativistic gravitating compact object. The equation of state is quadratic in the core and linear in the envelope. There is smooth matching between the core, envelope and the vacuum exterior regions. We found the masses, radii and compactness of some compact objects such PSR J1614-2230, PSR J1903+0327, Vela X-1, SMC-X-1, Cen X-3; which are in agreement with previous investigations. The gravitational potentials and the matter variables are well behaved throughout the stellar structure. We present in particular the variation of the radius in the core and the envelope of the star by changing some parameters values. Physical features of the pulsars PSR J1614-2230 are presented in more details. It observed that the radial pressure in the core is higher than the radial pressure in the envelope. The investigation reveals that the model is physically relevant for the study of observed compact stars. VL - 8 IS - 1 ER -
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