Brown dwarfs in Eddington-inspired Born-Infeld and beyond Horndeski theories
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...
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| Format: | Article |
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SpringerOpen
2019
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| author | Rosyadi, A.S. Sulaksono, A. Kassim, Hasan Abu Yusof, Norhasliza |
| author_facet | Rosyadi, A.S. Sulaksono, A. Kassim, Hasan Abu Yusof, Norhasliza |
| author_sort | Rosyadi, A.S. |
| collection | UM |
| description | 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). |
| first_indexed | 2024-03-06T06:00:24Z |
| format | Article |
| id | um.eprints-23626 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T06:00:24Z |
| publishDate | 2019 |
| publisher | SpringerOpen |
| record_format | dspace |
| spelling | um.eprints-236262020-01-29T05:37:43Z http://eprints.um.edu.my/23626/ Brown dwarfs in Eddington-inspired Born-Infeld and beyond Horndeski theories Rosyadi, A.S. Sulaksono, A. Kassim, Hasan Abu Yusof, Norhasliza Q Science (General) QC Physics 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). SpringerOpen 2019 Article PeerReviewed 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 <https://doi.org/10.1140/epjc/s10052-019-7560-3>. https://doi.org/10.1140/epjc/s10052-019-7560-3 doi:10.1140/epjc/s10052-019-7560-3 |
| spellingShingle | Q Science (General) QC Physics Rosyadi, A.S. Sulaksono, A. Kassim, Hasan Abu Yusof, Norhasliza Brown dwarfs in Eddington-inspired Born-Infeld and beyond Horndeski theories |
| title | Brown dwarfs in Eddington-inspired Born-Infeld and beyond Horndeski theories |
| title_full | Brown dwarfs in Eddington-inspired Born-Infeld and beyond Horndeski theories |
| title_fullStr | Brown dwarfs in Eddington-inspired Born-Infeld and beyond Horndeski theories |
| title_full_unstemmed | Brown dwarfs in Eddington-inspired Born-Infeld and beyond Horndeski theories |
| title_short | Brown dwarfs in Eddington-inspired Born-Infeld and beyond Horndeski theories |
| title_sort | brown dwarfs in eddington inspired born infeld and beyond horndeski theories |
| topic | Q Science (General) QC Physics |
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