403 citations · 1.2k across the 19 of their papers we have counts for
19 papers
Constraining the onset density for the QCD phase transition with the neutrino signal from core-collapse supernovae
Noshad Khosravi Largani, Tobias Fischer, Niels Uwe F. Bastian
The occurrence of a first-order hadron-quark matter phase transition at high baryon densities is investigated in astrophysical simulations of core-collapse supernovae, to decipher…
Implementation of Cluster expansion for hot QCD matter
Niels-Uwe Friedrich Bastian, Pasi Huovinen, Elizaveta Nazarova
We present a cluster expansion EoS model for strongly-interacting matter based on the generalized Beth-Uhlenbeck formalism to describe hadrons as bound clusters of quarks. This for…
Phenomenological quark-hadron equations of state with first-order phase transitions for astrophysical applications
Niels-Uwe F. Bastian
In the current work an equation of state model with a first-order phase transition for astrophysical applications is presented. The model is based on a two-phase approach for quark…
Medium modifications for light and heavy nuclear clusters in simulations of core collapse supernovae -- Impact on equation of state and weak interactions
Tobias Fischer, Stefan Typel, Gerd Röpke +2
The present article investigates the role of heavy nuclear clusters and weakly bound light nuclear clusters based on a newly developed equation of state for core collapse supernova…
Constraining the onset density of the hadron-quark phase transition with gravitational-wave observations
Sebastian Blacker, Niels-Uwe F. Bastian, Andreas Bauswein +5
We study the possible occurrence of the hadron-quark phase transition (PT) during the merging of neutron star binaries by hydrodynamical simulations employing a set of temperature…
Equation of state constraints from the threshold binary mass for prompt collapse of neutron star mergers
Andreas Bauswein, Sebastian Blacker, Vimal Vijayan +7
Using hydrodynamical simulations for a large set of high-density matter equations of state (EoSs) we systematically determine the threshold mass M_thres for prompt black-hole forma…
Core-collapse Supernova Explosions Driven by the Hadron-quark Phase Transition as a Rare -process Site
Tobias Fischer, Meng-Ru Wu, Benjamin Wehmeyer +3
Supernova explosions of massive stars are one of the primary sites for the production of the elements in the universe. Up to now, stars with zero-age main-sequence masses in the ra…
Impact of the Nuclear Equation of State on the Stability of Hybrid Neutron Stars
Mateusz Cierniak, Tobias Fischer, Niels-Uwe Bastian +2
We construct a set of equations of state (EoS) of dense and hot matter with a 1st order phase transition from a hadronic system to a deconfined quark matter state. In this two-phas…
Equation-of-state Constraints and the QCD Phase Transition in the Era of Gravitational-Wave Astronomy
Andreas Bauswein, Niels-Uwe Friedrich Bastian, David Blaschke +7
We describe a multi-messenger interpretation of GW170817, which yields a robust lower limit on NS radii. This excludes NSs with radii smaller than about 10.7 km and thus rules out…
A unified quark-nuclear matter equation of state from the cluster virial expansion within the generalized Beth-Uhlenbeck approach
Niels-Uwe Friedrich Bastian, David Bernhard Blaschke
We consider a cluster expansion for strongly correlated quark matter where the clusters are baryons with spectral properties that are described within the generalized Beth-Uhlenbec…
Identifying a first-order phase transition in neutron star mergers through gravitational waves
Andreas Bauswein, Niels-Uwe F. Bastian, David B. Blaschke +4
We identify an observable imprint of a first-order hadron-quark phase transition at supranuclear densities on the gravitational-wave (GW) emission of neutron star mergers. Specific…
Towards a Unified Quark-Hadron Matter Equation of State for Applications in Astrophysics and Heavy-Ion Collisions
Niels-Uwe F. Bastian, David Blaschke, Tobias Fischer +1
We outline an approach to a unified equation of state for quark-hadron matter on the basis of a derivable approach to the generalized Beth-Uhlenbeck equation of state for a clu…
Vector-Interaction-Enhanced Bag Model
Mateusz Cierniak, Thomas Klähn, Tobias Fischer +1
A commonly applied quark matter model in astrophysics is the thermodynamic bag model (tdBAG). The original MIT bag model approximates the effect of quark confinement, but does not…
Quark deconfinement as supernova explosion engine for massive blue-supergiant stars
Tobias Fischer, Niels-Uwe F. Bastian, Meng-Ru Wu +6
Blue-supergiant stars develop into core-collapse supernovae --- one of the most energetic outbursts in the universe --- when all nuclear burning fuel is exhausted in the stellar co…
The state of matter in simulations of core-collapse supernovae -- Reflections and recent developments
Tobias Fischer, Niels-Uwe Bastian, David Blaschke +7
In this review article we discuss selected developments regarding the role of the equation of state (EOS) in simulations of core-collapse supernovae. There are no first-principle c…
Strange matter prospects within the string-flip model
Niels-Uwe F. Bastian, David B. Blaschke, Mateusz Cierniak +4
In this contribution we extend the recently developed two-flavor quark-matter string-flip model by including strange quarks. We discuss implications for compact stars.
Quark-Nuclear Hybrid EoS with Excluded Volume Effects
Mark Alexander Randolph Kaltenborn, Niels-Uwe Friedrich Bastian, David Bernhard Blaschke
A two-phase description of the quark-nuclear matter hybrid equation of state that takes into account the effect of excluded volume in both the hadronic and the quark matter phases…
Light cluster production at NICA
N. -U. Bastian, P. Batyuk, D. Blaschke +6
Light cluster production at the NICA accelerator complex offers unique possibilities to use these states as "rare probes" of in-medium characteristics such as phase space occupatio…
Towards a new quark-nuclear matter EoS for applications in astrophysics and heavy-ion collisions
N. -U. Bastian, D. Blaschke
The aim of our work is to develop a unified equation of state (EoS) for nuclear and quark matter for a wide range in temperature, density and isospin so that it becomes applicable…