113 citations · 571 across the 33 of their papers we have counts for
10 papers · 1 filter
Bayesian Constraints on Bosonic Dark Matter in Neutron Stars within a Covariant Density-Functional Equation-of-State Ensemble
Davood Rafiei Karkevandi, Alexander Ayriyan, Armen Sedrakian
We investigate neutron stars admixed with repulsively self-interacting bosonic dark matter (DM) using current multi-messenger observations. The dark component is modeled as a compl…
Bayesian inference favors quark matter in neutron star interiors
Alexander Ayriyan, Oleksii Ivanytskyi, David Blaschke
We perform a physics-informed Bayesian analyses of the equation of state of hybrid neutron stars that incorporates color-flavor-locked quark matter modeled by a three-flavor non-lo…
Bayesian analysis of hybrid neutron star EOS constraints within an instantaneous nonlocal chiral quark matter model
Alexander Ayriyan, David Blaschke, Juan Pablo Carlomagno +2
We present a physics-informed Bayesian analysis of equation of state constraints using observational data for masses, radii and tidal deformability of pulsars and a generic class o…
Observational Probes of the Neutron Star Equation of State with Hyperons, Bosonic Dark Matter, and Quark Matter
Mahboubeh Shahrbaf, Davood Rafiei Karkevandi, Alexander Ayriyan +1
Context. The presence of dark matter in neutron stars is of growing interest due to its potential impact on the structure and observable properties of these objects. Among the vari…
Special point "trains" in the M-R diagram of hybrid stars
David Blaschke, Alexander Ayriyan, Mateusz Cierniak +3
We present a systematic investigation of the possible locations for the special point (SP), a unique feature of hybrid neutron stars in the mass-radius diagram. The study is perfor…
Constraining free parameters of a color superconducting non-local Nambu-Jona-Lasinio model using Bayesian analysis of neutron stars mass and radius measurements
Mahboubeh Shahrbaf, Sofija Antić, A. Ayriyan +2
We provide a systematic study of hybrid neutron star equations of state (EoS) consisting of a relativistic density functional for the hadronic phase and a covariant nonlocal Nambu-…
Hybrid equation of state with pasta phases and third family of compact stars
K. Maslov, N. Yasutake, A. Ayriyan +5
The effect of pasta phases on the quark-hadron phase transition is investigated for a set of relativistic mean-field equations of state for both hadron and quark matter. The result…
Robustness of third family solutions for hybrid stars against mixed phase effects
A. Ayriyan, N. -U. Bastian, D. Blaschke +3
We investigate the robustness of third family solutions for hybrid compact stars with a quark matter core that correspond to the occurrence of high-mass twin stars against a soften…
New class of hybrid EoS and Bayesian M-R data analysis
D. Alvarez-Castillo, A. Ayriyan, S. Benic +3
We explore systematically a new class of two-phase equations of state (EoS) for hybrid stars that is characterized by three main features : (1) stiffening of the nuclear EoS at sup…
Mass-radius constraints for the neutron star EoS - Bayesian analysis
A. Ayriyan, D. E. Alvarez-Castillo, D. Blaschke +1
We suggest a new Bayesian analysis (BA) using disjunct M-R constraints for extracting probability measures for cold, dense matter equations of state (EoS). One of the key issues of…