دورية أكاديمية
Brown dwarfs in Eddington-inspired Born-Infeld and beyond Horndeski theories
| العنوان: | Brown dwarfs in Eddington-inspired Born-Infeld and beyond Horndeski theories |
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| المؤلفون: | A. S. Rosyadi, A. Sulaksono, H. A. Kassim, N. Yusof |
| المصدر: | European Physical Journal C: Particles and Fields, Vol 79, Iss 12, Pp 1-10 (2019) |
| بيانات النشر: | SpringerOpen, 2019. |
| سنة النشر: | 2019 |
| المجموعة: | LCC:Astrophysics LCC:Nuclear and particle physics. Atomic energy. Radioactivity |
| مصطلحات موضوعية: | Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798 |
| الوصف: | 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 1$$\sigma $$ σ and 5$$\sigma $$ σ confidence by using chi-squared analysis. Furthermore, the minimum chi-squared values can be reached for the cases of $$\kappa = 0.17 \times 10^2 ~\mathrm{m}^5\,\mathrm{kg}^{-1}\,\mathrm{s}^{-2}$$ κ=0.17×102m5kg-1s-2 and $$\gamma = -0.1207$$ 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. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1434-6044 1434-6052 |
| Relation: | https://doaj.org/toc/1434-6044; https://doaj.org/toc/1434-6052 |
| DOI: | 10.1140/epjc/s10052-019-7560-3 |
| URL الوصول: | https://doaj.org/article/4ad222daf5974b7ab1acc51bf5543b8b |
| رقم الأكسشن: | edsdoj.4ad222daf5974b7ab1acc51bf5543b8b |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 14346044 14346052 |
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| DOI: | 10.1140/epjc/s10052-019-7560-3 |