Please use this identifier to cite or link to this item:
https://www.um.edu.mt/library/oar/handle/123456789/121539
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Dialektopoulos, Konstantinos F. | - |
dc.contributor.author | Said, Jackson | - |
dc.contributor.author | Oikonomopoulou, Zinovia | - |
dc.date.accessioned | 2024-04-29T12:09:57Z | - |
dc.date.available | 2024-04-29T12:09:57Z | - |
dc.date.issued | 2023 | - |
dc.identifier.citation | Benisty, D., Mifsud, J., Said, J. L., & Staicova, D. (2023). Strengthening extended gravity constraints with combined systems: ƒ (R) bounds from cosmology and the galactic center. Physics of the Dark Universe, 42, 101350. | en_GB |
dc.identifier.issn | 22126864 | - |
dc.identifier.uri | https://www.um.edu.mt/library/oar/handle/123456789/121539 | - |
dc.description.abstract | Extended gravity is widely constrained in different astrophysical and astronomical systems. Since these different systems are based on different scales it is not trivial to get a combined constraint that is based on different phenomenology. Here, for the first time (to the best of our knowledge), we combine constraints for gravity from late time Cosmology and the orbital motion of the stars around the galactic center. gravity models give different potentials that are tested directly in the galactic center. The cosmological data set includes the type Ia supernova and baryon acoustic oscillations. For the galactic star center data set we use the published orbital measurements of the S2 star. The constraints on the universal parameter from the combined system give: for the Hu–Sawicki model, while for the Starobinsky dark energy model. These results improve on the cosmological results we obtain. The results show that combined constraint from different systems yields a stronger constraint for different theories under consideration. Future measurements from the galactic center and from cosmology will give better constraints on models with gravity. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | Elsevier BV | en_GB |
dc.rights | info:eu-repo/semantics/openAccess | en_GB |
dc.subject | Dark energy (Astronomy) | en_GB |
dc.subject | Cosmology | en_GB |
dc.subject | Gravity | en_GB |
dc.subject | General relativity (Physics) | en_GB |
dc.subject | Gravitational fields | en_GB |
dc.subject | Galactic center | en_GB |
dc.title | Strengthening extended gravity constraints with combined systems : ƒ (R) bounds from cosmology and the galactic center | en_GB |
dc.type | article | en_GB |
dc.rights.holder | The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder. | en_GB |
dc.description.reviewed | peer-reviewed | en_GB |
dc.identifier.doi | 10.1016/j.dark.2023.101344 | - |
dc.publication.title | Physics of the Dark Universe | en_GB |
Appears in Collections: | Scholarly Works - InsSSA |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Strengthening_extended_gravity_constraints_with_combined_systems_f_(R)_bounds_from_cosmology_and_the_galactic_center(2023).pdf | 601.71 kB | Adobe PDF | View/Open |
Items in OAR@UM are protected by copyright, with all rights reserved, unless otherwise indicated.