The Second Love Number of Dark Compact Planets and Neutron Stars with Dark Matter
| Autor: | Yannick Dengler, Jürgen Schaffner-Bielich, Laura Tolos |
|---|---|
| Přispěvatelé: | Agencia Estatal de Investigación (España), Consejo Superior de Investigaciones Científicas (España), Ministerio de Ciencia, Innovación y Universidades (España), Generalitat Valenciana, European Commission |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Nuclear Theory (nucl-th) Particles and fields Nuclear Theory Gravitation Cosmology and Astrophysics FOS: Physical sciences Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics::Earth and Planetary Astrophysics Astrophysics - High Energy Astrophysical Phenomena Nuclear Physics |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | We study the mass-radius relation and the second Love number of compact objects made of ordinary matter and non-self-annihilating fermionic dark matter for a wide range of dark matter particle masses, and for the cases of weakly and strongly interacting dark matter. We obtain stable configurations of compact objects with radii smaller than 10 km and masses similar to Earth- or Jupiter-like stellar objects. In certain parameter ranges, we find second Love numbers which are markedly different compared to those expected for neutron stars without dark matter. Thus, by obtaining the compactness of these compact objects and measuring their tidal deformability from gravitational wave detections from binary neutron star mergers, the extracted value of the second Love number would allow us to determine the existence of dark matter inside neutron stars irrespective of the equation of state of ordinary matter. L. T. acknowledges support from Agencia Estatal Consejo Superior de Investigaciones Científicas Project No. 202050I008, by PID2019–110165 GB-I00 financed by MCIN/AEI/10.13039/501100011033, and by Generalitat Valenciana under Contract No. PROMETEO/2020/023. This research has also been supported by the EU STRONG-2020 project under the program H2020-INFRAIA-2018-1 Grant Agreement No. 824093, by PHAROS COST Action CA16214 and by the CRC-TR 211 “Strong-interaction matter under extreme conditions” Project No. 315477589-TRR 211. |
| Databáze: | OpenAIRE |
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