Rosyadi, A.S. and Sulaksono, A. and Kassim, Hasan Abu and Yusof, Norhasliza (2019) Brown dwarfs in Eddington-inspired Born-Infeld and beyond Horndeski theories. The European Physical Journal C, 79 (12). p. 1030. ISSN 1434-6044, DOI https://doi.org/10.1140/epjc/s10052-019-7560-3.
Full text not available from this repository.Abstract
We studied herein the mass and the radius of brown dwarfs predicted by beyond Horndeski (BH) and Eddington-inspired Born-Infeld (EiBI) gravity theories by numerically solving the modified non-relativistic hydrostatic equations of both theories. We used a recent compilation of brown dwarf masses and radii obtained from Ref. Bayliss et al. (Astrophys J 153:1, 2016) to constrain the free parameter of both theories. We obtain the range of the corresponding parameters with 1σ and 5σ confidence by using chi-squared analysis. Furthermore, the minimum chi-squared values can be reached for the cases of κ=0.17×102m5kg-1s-2 and γ= - 0.1207 for EiBI and BH theories, respectively. The corresponding parameter values with the minimum chi-squared values are relatively small; therefore, they cannot significantly change the brown dwarf mass limits determined from the equivalence of nuclear and photosphere luminosities for the pp (hydrogen burning) and pp+pd (deuterium burning) reactions. © 2019, The Author(s).
| Item Type: | Article |
|---|---|
| Funders: | Q1Q2 grant No. NKB-0267/UN2.R3.1/HKP.05.00/2019, Fundamental Research Grant Scheme (FP042-2018 A) under Ministry of Education |
| Uncontrolled Keywords: | Gravitation; Scalars; Horndeski theories |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 29 Jan 2020 05:37 |
| Last Modified: | 29 Jan 2020 05:37 |
| URI: | http://eprints.um.edu.my/id/eprint/23626 |
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