Zobrazeno 1 - 10
of 809
pro vyhledávání: '"A. Bielich"'
In this work we investigate the properties of neutron stars admixed with selfinteracting scalar bosonic dark matter. The dark matter interaction is described by a generalized $\phi^n$ power-law potential. We perform a stability analysis of these two-
Externí odkaz:
http://arxiv.org/abs/2408.13157
We investigate the influence of a phase transition from hadronic matter to a deconfined quark phase inside a neutron star on its cooling behaviour. We take particular care that all equations of state under investigation are compatible with astrophysi
Externí odkaz:
http://arxiv.org/abs/2408.05287
Publikováno v:
Phys. Rev. D 110 (2024) 023013
We present a comprehensive study of compact stars admixed with non-self annihilating self-interacting fermionic dark matter, delineating the dependence on the nuclear equation of state by considering the two limiting parametrized equations of state f
Externí odkaz:
http://arxiv.org/abs/2404.12875
Autor:
Shirke, Swarnim, Pradhan, Bikram Keshari, Chatterjee, Debarati, Sagunski, Laura, Schaffner-Bielich, Jürgen
The effect of dark matter (DM) on $f$-mode oscillations in DM admixed neutron stars (NSs) is investigated in a comprehensive analysis with particular attention to the role of the nuclear equation of state. Hadronic matter is modeled by the relativist
Externí odkaz:
http://arxiv.org/abs/2403.18740
We examine which first order phase transitions are consistent with today's astrophysical constraints. In particular, we explore how a well-constrained mass-radius data point would restrict the admissible parameter space and to this end, we employ the
Externí odkaz:
http://arxiv.org/abs/2312.10148
We present a phenomenological model to investigate the chiral phase transition characterized by parity doubling in dense, beta equilibrated, cold matter. Our model incorporates effective interactions constrained by SU(3) relations and considers baryo
Externí odkaz:
http://arxiv.org/abs/2309.02368
The properties of selfinteracting boson stars with different scalar potentials going beyond the commonly used $\phi^4$ ansatz are studied. The scalar potential is extended to different values of the exponent $n$ of the form $V \propto \phi^n$. Two st
Externí odkaz:
http://arxiv.org/abs/2308.01254
Autor:
Shirke, Swarnim, Ghosh, Suprovo, Chatterjee, Debarati, Sagunski, Laura, Schaffner-Bielich, Jürgen
Publikováno v:
JCAP12(2023)008
In this work, we perform the first systematic investigation of effects of the presence of dark matter on $r$-mode oscillations in neutron stars (NSs). Using a self-interacting dark matter (DM) model based on the neutron decay anomaly and a hadronic m
Externí odkaz:
http://arxiv.org/abs/2305.05664
Autor:
Diedrichs, Robin Fynn, Becker, Niklas, Jockel, Cédric, Christian, Jan-Erik, Sagunski, Laura, Schaffner-Bielich, Jürgen
In this work we investigate the tidal deformability of a neutron star admixed with dark matter, modeled as a massive, self-interacting, complex scalar field. We derive the equations to compute the tidal deformability of the full Einstein-Hilbert-Klei
Externí odkaz:
http://arxiv.org/abs/2303.04089
Publikováno v:
Phys. Rev. D 108, 043002 (2023)
The existence of quark matter inside the heaviest neutron stars has been the topic of numerous recent studies, many of them suggesting that a phase transition to strongly interacting conformal matter inside neutron stars is feasible. Here we examine
Externí odkaz:
http://arxiv.org/abs/2303.00013