61 citations · 242 across the 14 of their papers we have counts for
15 papers
NS-UNO: Neutron Star EoS Inference from an Unconstrained Number of Observations
Valéria Carvalho, Márcio Ferreira, Michał Bejger +1
Future multimessenger observations of neutron stars (NS) are expected to substantially increase both the number and precision of astrophysical constraints on the equation of state…
Modelling mountains on accreting magnetized neutron stars
T. Brusco, B. Haskell, M. Razzano +2
Continuous gravitational waves from accreting neutron stars in Low Mass X-ray Binaries are one of the main targets for current and next generation ground based detectors. In order…
Probing globular clusters parameters through gravitational wave lensing with stellar-mass black hole binaries
Sreekanth Harikumar, Abbas Askar, Michał Bejger +3
Globular clusters (GCs) can act as gravitational lenses for gravitational waves(GWs) in the wave-optics regime, imprinting frequency-dependent signatures on the observed signal. We…
Neural Posterior Estimation of Neutron Star Equations of State
Valéria Carvalho, Márcio Ferreira, Michał Bejger +1
We present a simulation-based inference (SBI) framework to constrain the neutron star (NS) equation of state (EoS) from astrophysical observations of masses, radii and tidal deform…
Detecting dense-matter phase transition signatures in neutron star mass-radius measurements as data anomalies using normalising flows
Filip Morawski, Michał Bejger
Observations of neutron stars may be used to study aspects of extremely dense matter, specifically a possibility of phase transitions to exotic states, such as de-confined quarks.…
Anomaly Detection in Gravitational Waves data using Convolutional AutoEncoders
Filip Morawski, Michał Bejger, Elena Cuoco +1
As of this moment, fifty gravitational waves (GW) detections have been announced, thanks to the observational efforts of the LIGO-Virgo Collaboration, working with the Advanced LIG…
Neural networks reconstruction of the dense-matter equation of state from neutron-star parameters
Filip Morawski, Michał Bejger
Aims: The aim of this work is to study the application of the artificial neural networks guided by the autoencoder architecture as a method for precise reconstruction of the neutro…
Fundamental physics and the absence of sub-millisecond pulsars
B. Haskell, J. L. Zdunik, M. Fortin +3
Observations of the spin distribution of rapidly rotating neutron stars show evidence for a lack of stars spinning at frequencies larger than Hz, well below the pred…
Consequences of a strong phase transition in the dense matter equation of state for the rotational evolution of neutron stars
M. Bejger, D. Blaschke, P. Haensel +2
We explore the implications of a strong first-order phase transition region in the dense matter equation of state in the interiors of rotating neutron stars, and the resulting crea…
Progenitor neutron stars of the lightest and heaviest millisecond pulsars
M. Fortin, M. Bejger, P. Haensel +1
The recent mass measurements of two binary millisecond pulsars, PSR J1614-2230 and PSR J0751+1807 with a mass M=1.97+/-0.04 Msun and M= 1.26 +/- 0.14 Msun, respectively, indicate a…
Compression of matter in the center of accreting neutron stars
M. Bejger, J. L. Zdunik, P. Haensel +1
To estimate the feasibility of dense-matter phase transition, we studied the evolution of the central density as well as the baryon chemical potential of accreting neutron stars. W…
Implications of the measured parameters of PSR J1903+0327 for its progenitor neutron star
M. Bejger, M. Fortin, P. Haensel +1
Using the intrinsic PSR J1903+0327 parameters evaluated from radio observations (mass, rotation period and dipole magnetic field deduced from the timing properties) we calculate th…
Approximate analytic expressions for circular orbits around rapidly rotating compact stars
M. Bejger, J. L. Zdunik, P. Haensel
We calculate stationary configurations of rapidly rotating compact stars in general relativity, to study the properties of circular orbits of test particles in the equatorial plane…
EOS of dense matter and fast rotation of neutron stars
J. L. Zdunik, P. Haensel, M. Bejger +1
Recent observations of XTE J1739-285 suggest that it contains a neutron star rotating at 1122 Hz. Such rotational frequency would be the first for which the effects of rotation are…
The energy release--stellar angular momentum independence in rotating compact stars undergoing first-order phase transitions
M. Bejger, J. L. Zdunik, P. Haensel +1
We present the general relativistic calculation of the energy release associated with a first order phase transition (PT) at the center of a rotating neutron star (NS). The energy…