Constraints on modified gravity models from white dwarfs
| Autor: | Swapnil Shankar, Srimanta Banerjee, Tejinder P. Singh |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Equation of state
Gravity (chemistry) Cosmology and Nongalactic Astrophysics (astro-ph.CO) Young stellar object FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Parameter space 01 natural sciences General Relativity and Quantum Cosmology 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics Stellar structure 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) Astrophysics::Galaxy Astrophysics Physics 010308 nuclear & particles physics White dwarf Astronomy and Astrophysics Newtonian limit Stars Astrophysics - Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Journal of Cosmology and Astroparticle Physics. 2017:004-004 |
| ISSN: | 1475-7516 |
| Popis: | Modified gravity theories can introduce modifications to the Poisson equation in the Newtonian limit. As a result, we expect to see interesting features of these modifications inside stellar objects. White dwarf stars are one of the most well studied stars in stellar astrophysics. We explore the effect of modified gravity theories inside white dwarfs. We derive the modified stellar structure equations and solve them to study the mass-radius relationships for various modified gravity theories. We also constrain the parameter space of these theories from observations. Comment: 27 pages, 22 figures, 1 Table; Matches the version published in JCAP |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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