112 citations · 501 across the 12 of their papers we have counts for
11 papers · 1 filter
Twins in the Shadow: Phase Transitions in Proto-Neutron Stars
Jannik Milthaler, Jan-Erik Christian, Pia Jakobus +1
We study the impact of a first-order phase transition from hadronic to deconfined quark matter on the evolution of proto-neutron stars. To maximize the applicability of our results…
Robustness of Magnetic Field Amplification in Neutron Star Mergers
Ricard Aguilera-Miret, Jan-Erik Christian, Stephan Rosswog +1
The dynamics of a binary neutron stars merger is governed by physics under the most extreme conditions, including strong spacetime curvature, ultra-high matter densities, luminous…
Comprehensive Analysis of Constructing Hybrid Stars with an RG-consistent NJL Model
Jan-Erik Christian, Ishfaq Ahmad Rather, Hosein Gholami +1
In this work, we investigate the properties of hadronic and quark matter that would allow for a first order phase transition between them within neutron stars. To this end, we use…
Constraining twin stars with cold neutron star cooling data
Melissa Mendes, Jan-Erik Christian, Farrukh J. Fattoyev +1
We investigate the influence of a phase transition from hadronic matter to a deconfined quark phase inside a neutron star on its cooling behaviour including the appearance of twin…
Constraining exotic compact stars composed of bosonic and fermionic dark matter with gravitational wave events
Stephan Wystub, Yannick Dengler, Jan-Erik Christian +1
We investigate neutron star-black hole (NS-BH) merger candidates as a test for compact exotic objects. Using the events GW190814, GW200105 and GW200115 measured by the LIGO-Virgo c…
Confirming the existence of twin stars in a NICER way
Jan-Erik Christian, Jürgen Schaffner-Bielich
We demonstrate that future radius measurement of the NICER mission have the potential to reveal the existence of a strong phase transition in dense neutron star matter by confirmin…
Supermassive Neutron Stars Rule Out Twin Stars
Jan-Erik Christian, Jürgen Schaffner-Bielich
We investigate the implications of a hypothetical neutron star in regard to the possibility of a strong phase transition to quark matter. We use equations o…
Twin stars and the stiffness of the nuclear equation of state: ruling out strong phase transitions below with the new NICER radius measurements
Jan-Erik Christian, Jürgen Schaffner-Bielich
We explore the connection between the stiffness of an hadronic equation of state (EoS) with a sharp phase transition to quark matter to its tidal deformability. For this we employ…
Signals in the tidal deformability for phase transitions in compact stars with constraints from GW170817
Jan-Erik Christian, Andreas Zacchi, Jürgen Schaffner-Bielich
We compute the tidal deformabilities for neutron star merger for equations of state with a strong first order phase transition producing a new separate branch in the mass-radius di…
Relativistic parameterizations of neutron matter and implications for neutron stars
Nadine Hornick, Laura Tolos, Andreas Zacchi +2
We construct parameter sets of the relativistic mean-field model fitted to the recent constraints on the asymmetry energy and the slope parameter for pure neutron matter. W…
Classifications of Twin Star Solutions for a Constant Speed of Sound Parameterized Equation of State
Jan-Erik Christian, Andreas Zacchi, Jürgen Schaffner-Bielich
We explore the possible mass radius relation of compact stars for the equation of states with a first order phase transition. The low density matter is described by a nuclear matte…