Constraining MOdified Gravity with the S2 Star
We have used publicly available kinematic data for the S2 star to constrain the parameter space of MOdified Gravity. Integrating geodesics and using a Markov Chain Monte Carlo algorithm, we have provided the first constraint on the scales of the Galactic Centre for the parameter <inline-formula&g...
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MDPI AG
2022-02-01
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| Series: | Universe |
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| Online Access: | https://www.mdpi.com/2218-1997/8/2/137 |
| _version_ | 1797476199308460032 |
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| author | Riccardo Della Monica Ivan de Martino Mariafelicia de Laurentis |
| author_facet | Riccardo Della Monica Ivan de Martino Mariafelicia de Laurentis |
| author_sort | Riccardo Della Monica |
| collection | DOAJ |
| description | We have used publicly available kinematic data for the S2 star to constrain the parameter space of MOdified Gravity. Integrating geodesics and using a Markov Chain Monte Carlo algorithm, we have provided the first constraint on the scales of the Galactic Centre for the parameter <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>α</mi></semantics></math></inline-formula> of the theory, which represents the fractional increment of the gravitational constant <i>G</i> with respect to its Newtonian value. Namely, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>α</mi><mo>≲</mo><mn>0.662</mn></mrow></semantics></math></inline-formula> at 99.7% confidence level (where <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>α</mi><mo>=</mo><mn>0</mn></mrow></semantics></math></inline-formula> reduces the theory to General Relativity). |
| first_indexed | 2024-03-09T20:54:35Z |
| format | Article |
| id | doaj.art-84a7154733804842843638e6ae367a5e |
| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-03-09T20:54:35Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj.art-84a7154733804842843638e6ae367a5e2023-11-23T22:24:03ZengMDPI AGUniverse2218-19972022-02-018213710.3390/universe8020137Constraining MOdified Gravity with the S2 StarRiccardo Della Monica0Ivan de Martino1Mariafelicia de Laurentis2Departamento de Fisica Fundamental, Universidad de Salamanca, P. de la Merced, 37008 Salamanca, SpainDepartamento de Fisica Fundamental, Universidad de Salamanca, P. de la Merced, 37008 Salamanca, SpainDipartimento di Fisica, Universitá di Napoli “Federico II”, Complesso Universitario di Monte S. Angelo, Edificio G, Via Cinthia, I-80126 Napoli, ItalyWe have used publicly available kinematic data for the S2 star to constrain the parameter space of MOdified Gravity. Integrating geodesics and using a Markov Chain Monte Carlo algorithm, we have provided the first constraint on the scales of the Galactic Centre for the parameter <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>α</mi></semantics></math></inline-formula> of the theory, which represents the fractional increment of the gravitational constant <i>G</i> with respect to its Newtonian value. Namely, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>α</mi><mo>≲</mo><mn>0.662</mn></mrow></semantics></math></inline-formula> at 99.7% confidence level (where <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>α</mi><mo>=</mo><mn>0</mn></mrow></semantics></math></inline-formula> reduces the theory to General Relativity).https://www.mdpi.com/2218-1997/8/2/137alternative gravitygalactic centreblack holes |
| spellingShingle | Riccardo Della Monica Ivan de Martino Mariafelicia de Laurentis Constraining MOdified Gravity with the S2 Star Universe alternative gravity galactic centre black holes |
| title | Constraining MOdified Gravity with the S2 Star |
| title_full | Constraining MOdified Gravity with the S2 Star |
| title_fullStr | Constraining MOdified Gravity with the S2 Star |
| title_full_unstemmed | Constraining MOdified Gravity with the S2 Star |
| title_short | Constraining MOdified Gravity with the S2 Star |
| title_sort | constraining modified gravity with the s2 star |
| topic | alternative gravity galactic centre black holes |
| url | https://www.mdpi.com/2218-1997/8/2/137 |
| work_keys_str_mv | AT riccardodellamonica constrainingmodifiedgravitywiththes2star AT ivandemartino constrainingmodifiedgravitywiththes2star AT mariafeliciadelaurentis constrainingmodifiedgravitywiththes2star |