We report on Bayesian estimation of the radius, mass, and hot surface regions massive millisecond pulsar PSR J0740$+$6620, conditional pulse-profile modeling Neutron Star Interior Composition Explorer X-ray Timing Instrument (NICER XTI) event data. condition informative distance, orbital inclination priors derived from joint NANOGrav CHIME/Pulsar wideband radio timing measurements arXiv:2104.00...

We provide a systematic study of hybrid neutron star equations state (EOS) consisting relativistic density functional for the hadronic phase and covariant nonlocal Nambu--Jona-Lasinio (nlNJL) model to describe color superconducting quark matter phase. Changing values two free parameters, dimensionless vector diquark coupling strengths ${\ensuremath{\eta}}_{V}$ ${\ensuremath{\eta}}_{D}$ results ...

Abstract We study the appearance of sexaquark (uuddss) as a candidate dark matter in core neutron stars while there has been no experimental evidence this particle laboratories so far. Regarding observational constraints supermassive pulsars well gravitational waves, we encounter dilemma for which introduce solution by quark deconfinement fulfilling all present from multi-messenger astronomy, i...

By directly inverting several neutron star (NS) observables in the three-dimensional parameter space for equation of state super-dense neutron-rich nuclear matter, we show that lower radius limit PSR J0740+6620 mass 2.08 ± 0.07 M⊙ from Neutron Star Interior Composition Explorer (NICER)'s very recent observation sets a much tighter boundary than previously known symmetry energy density range (1....

We follow the idea that QCD phase diagram may be described by a crossover from hadron resonance gas to perturbative using switch function ansatz of Albright, Kapusta and Young [1]. While could calibrated at vanishing baryon chemical potential with data lattice simulations, it has been suggested recently Welle [2] in zero temperature limit, parameter $\mu_0$ constrained neutron star phenomenolog...

We studied recent observation data of pulsar masses and radii PSR J0740+6620, J0348+0432, J1614–2230 from different measurements, based on the extended version σ-ω model. Throughout our analysis, we assumed that these pulsars are maximal-mass compact stars, thus applied core approximation. Based linear relation between microscopic macroscopic parameters stars evaluated by model, estimated avera...

PURPOSE To estimate retrospectively the incidence, predisposing factors, and possible mechanisms precipitating massive suprachoroidal hemorrhage (MSCH) development during cataract extraction surgery. METHODS The study was conducted on 6639 consecutive cataract extractions performed between 1994 and 2002. All of the procedures were carried out using traditional nucleus expression methods. The ...

A Bayesian analysis of the possible behaviors dense matter equation state informed through recent LIGO-Virgo as well NICER measurements reveals that all present observations are compatible with a fully nucleonic hypothesis for composition matter, even in core most massive pulsar PSR J0740+6620. Under composition, we extract general behavior energy per particle symmetric and density dependence s...

Abstract We demonstrate that future radius measurements of the NICER mission have potential to reveal existence a strong phase transition in dense neutron star matter by confirming so-called twin stars, compact configurations with same mass but different radii. The latest constraints from for pulsars J0740+6620 as well J0030+0451 are discussed using relativistic mean field equations state varyi...