Constraining physical parameters of DESs via the secondary component of the GW190814 event and other self-bound NS pulsars in f(Q)-gravity theory
Abstract The spherically symmetric dark energy (DE) stellar model is presented here within the context of the f(Q) theory of gravity. In order to develop the model, we take into account the linear functional form of f(Q) as $$f(Q)=mQ+n$$ f ( Q ) = m Q + n , where m is the coupling parameter and n is...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2023-12-01
|
| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-023-12340-x |
| _version_ | 1797233322106028032 |
|---|---|
| author | Piyali Bhar Abdelghani Errehymy Saibal Ray |
| author_facet | Piyali Bhar Abdelghani Errehymy Saibal Ray |
| author_sort | Piyali Bhar |
| collection | DOAJ |
| description | Abstract The spherically symmetric dark energy (DE) stellar model is presented here within the context of the f(Q) theory of gravity. In order to develop the model, we take into account the linear functional form of f(Q) as $$f(Q)=mQ+n$$ f ( Q ) = m Q + n , where m is the coupling parameter and n is a real constant. We further assume that the stellar model is composed of normal baryonic matter along with DE; however, for the sake of simplicity, we avoid the interaction between them. The impact of the coupling parameter m on different physical parameters of DE stars (DESs) has been thoroughly investigated. For various values of m specified in the figure, the numerical values of the physical parameters are shown in tabular form. It is found that as m increases, the DES candidates become gradually massive and larger in size. In order to compare the behaviour of DESs with the observational results, we use the measurement of the GW190814 event and the three NS pulsars, viz. 4U1608-52 (mass $$= 1.74_{- 0.14}^{+0.14}~M_{\odot }$$ = 1 . 74 - 0.14 + 0.14 M ⊙ ), PSR J1614-2230 (mass $$=1.97_{-0.04}^{+0.04}~M_{\odot }$$ = 1 . 97 - 0.04 + 0.04 M ⊙ ), and PSR J0952-0607 (mass $$=2.35_{- 0.17}^{+0.17}~M_{\odot }$$ = 2 . 35 - 0.17 + 0.17 M ⊙ ). With the help of the $$M-R$$ M - R plot, the maximum mass of the DES obtained from our model is $$2.57~M_{\odot }$$ 2.57 M ⊙ , which is located within the lower “mass gap” range. To cover the observational constraints, this DES can be a representative for the secondary component of the GW190814 event, whose mass range is detected to be $$2.59_{-0.09}^{+0.08}~M_{\odot }$$ 2 . 59 - 0.09 + 0.08 M ⊙ by LIGO/VIRGO experiments. |
| first_indexed | 2024-03-08T19:44:20Z |
| format | Article |
| id | doaj.art-5a8589b46b1945c3aa24a66ac9fe5196 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-24T16:14:19Z |
| publishDate | 2023-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-5a8589b46b1945c3aa24a66ac9fe51962024-03-31T11:31:43ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522023-12-01831211710.1140/epjc/s10052-023-12340-xConstraining physical parameters of DESs via the secondary component of the GW190814 event and other self-bound NS pulsars in f(Q)-gravity theoryPiyali Bhar0Abdelghani Errehymy1Saibal Ray2Department of Mathematics, Government General Degree College SingurAstrophysics Research Centre, School of Mathematics, Statistics and Computer Science, University of KwaZulu-NatalCentre for Cosmology, Astrophysics and Space Science (CCASS), GLA UniversityAbstract The spherically symmetric dark energy (DE) stellar model is presented here within the context of the f(Q) theory of gravity. In order to develop the model, we take into account the linear functional form of f(Q) as $$f(Q)=mQ+n$$ f ( Q ) = m Q + n , where m is the coupling parameter and n is a real constant. We further assume that the stellar model is composed of normal baryonic matter along with DE; however, for the sake of simplicity, we avoid the interaction between them. The impact of the coupling parameter m on different physical parameters of DE stars (DESs) has been thoroughly investigated. For various values of m specified in the figure, the numerical values of the physical parameters are shown in tabular form. It is found that as m increases, the DES candidates become gradually massive and larger in size. In order to compare the behaviour of DESs with the observational results, we use the measurement of the GW190814 event and the three NS pulsars, viz. 4U1608-52 (mass $$= 1.74_{- 0.14}^{+0.14}~M_{\odot }$$ = 1 . 74 - 0.14 + 0.14 M ⊙ ), PSR J1614-2230 (mass $$=1.97_{-0.04}^{+0.04}~M_{\odot }$$ = 1 . 97 - 0.04 + 0.04 M ⊙ ), and PSR J0952-0607 (mass $$=2.35_{- 0.17}^{+0.17}~M_{\odot }$$ = 2 . 35 - 0.17 + 0.17 M ⊙ ). With the help of the $$M-R$$ M - R plot, the maximum mass of the DES obtained from our model is $$2.57~M_{\odot }$$ 2.57 M ⊙ , which is located within the lower “mass gap” range. To cover the observational constraints, this DES can be a representative for the secondary component of the GW190814 event, whose mass range is detected to be $$2.59_{-0.09}^{+0.08}~M_{\odot }$$ 2 . 59 - 0.09 + 0.08 M ⊙ by LIGO/VIRGO experiments.https://doi.org/10.1140/epjc/s10052-023-12340-x |
| spellingShingle | Piyali Bhar Abdelghani Errehymy Saibal Ray Constraining physical parameters of DESs via the secondary component of the GW190814 event and other self-bound NS pulsars in f(Q)-gravity theory European Physical Journal C: Particles and Fields |
| title | Constraining physical parameters of DESs via the secondary component of the GW190814 event and other self-bound NS pulsars in f(Q)-gravity theory |
| title_full | Constraining physical parameters of DESs via the secondary component of the GW190814 event and other self-bound NS pulsars in f(Q)-gravity theory |
| title_fullStr | Constraining physical parameters of DESs via the secondary component of the GW190814 event and other self-bound NS pulsars in f(Q)-gravity theory |
| title_full_unstemmed | Constraining physical parameters of DESs via the secondary component of the GW190814 event and other self-bound NS pulsars in f(Q)-gravity theory |
| title_short | Constraining physical parameters of DESs via the secondary component of the GW190814 event and other self-bound NS pulsars in f(Q)-gravity theory |
| title_sort | constraining physical parameters of dess via the secondary component of the gw190814 event and other self bound ns pulsars in f q gravity theory |
| url | https://doi.org/10.1140/epjc/s10052-023-12340-x |
| work_keys_str_mv | AT piyalibhar constrainingphysicalparametersofdessviathesecondarycomponentofthegw190814eventandotherselfboundnspulsarsinfqgravitytheory AT abdelghanierrehymy constrainingphysicalparametersofdessviathesecondarycomponentofthegw190814eventandotherselfboundnspulsarsinfqgravitytheory AT saibalray constrainingphysicalparametersofdessviathesecondarycomponentofthegw190814eventandotherselfboundnspulsarsinfqgravitytheory |