| Full text | |
| Author(s): |
Lourenco, O.
[1]
;
Dutra, M.
[1]
;
Lenzi, C. H.
[1]
;
Bhuyan, M.
[1, 2, 3]
;
Biswal, S. K.
[4]
;
Santos, B. M.
[5]
Total Authors: 6
|
| Affiliation: | [1] DCTA, Dept Fis, Inst Tecnol Aeronaut, BR-12228900 Sao Jose Dos Campos, SP - Brazil
[2] Univ Malaya, Fac Sci, Dept Phys, Kuala Lumpur 50603 - Malaysia
[3] Duy Tan Univ, Inst Res Dev, Da Nang 550000 - Vietnam
[4] Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190 - Peoples R China
[5] Univ Fed Acre, BR-69920900 Rio Branco, AC - Brazil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | ASTROPHYSICAL JOURNAL; v. 882, n. 1 SEP 1 2019. |
| Web of Science Citations: | 1 |
| Abstract | |
We propose a density-dependent function for the attractive interaction in the original van der Waals model to correctly describe the flow constraint at the high-density regime of the symmetric nuclear matter. After a generalization to asymmetric nuclear matter, it was also possible to study the stellar matter regime from this new model. The mass-radius relation for neutron stars under beta-equilibrium is found to agree with recent X-ray observations. The neutron-star masses supported against gravity, obtained from some parameterizations of the model, are in the range of (1.97-2.07)M-circle dot, compatible with observational data from the PSR J0348+0432 pulsar. Furthermore, we verify the reliability of the model in predicting tidal deformabilities of the binary system related to the GW170817 neutron-star merger event and find a full agreement with the new bounds obtained by the LIGO/Virgo collaboration. (AU) | |
| FAPESP's process: | 13/26258-4 - Superdense matter in the universe |
| Grantee: | Manuel Máximo Bastos Malheiro de Oliveira |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/05660-0 - Theoretical studies of the structure and reactions of exotic nuclei and many-body systems |
| Grantee: | Brett Vern Carlson |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 14/26195-5 - Isoscalar two-nucleon correlations in nuclei |
| Grantee: | Mrutunjaya Bhuyan |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |