Confirming the existence of twin stars in a NICER way
arXiv:2109.04191 · doi:10.3847/1538-4357/ac75cf
Abstract
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 confirming the existence of so called twin stars, compact star configurations with the same mass but different radii. The latest radius constraints from NICER for the pulsars J0740+6620 as well as J0030+0451 are discussed using relativistic mean field equations of state with varying stiffness, connected with a first order phase transition to quark matter. We show, that twin star solutions are compatible with the new radius constraint but are located at radii \emph{below} the present constraints from NICER serving as a smoking gun for a strong phase transition in neutron star matter. This scenario is realized if a strong phase transition takes place in neutron stars of the first branch with masses above .
5 pages, 3 figures. arXiv admin note: text overlap with arXiv:2011.01001
References in corpus (23)
- Shapiro delay measurement of a two solar mass neutron star
- A Massive Pulsar in a Compact Relativistic Binary
- PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter
- A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
- A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
- Neutron-Rich Nuclei in Heaven and Earth
- Constraining Neutron-Star Matter with Microscopic and Macroscopic Collisions
- Building relativistic mean field models for finite nuclei and neutron stars
- Signals of the QCD phase transition in core-collapse supernovae
- A NICER view of PSR J0030+0451: Implications for the dense matter equation of state
- Compact stars with sequential QCD phase transitions
- Multimessenger constraints for ultra-dense matter
- Discovery of a Gamma-ray Black Widow Pulsar by GPU-accelerated Einstein@Home
- Twin stars and the stiffness of the nuclear equation of state: ruling out strong phase transitions below with the new NICER radius measurements
- Effects of color superconductivity on the nucleation of quark matter in neutron stars
- Relativistic hybrid stars in light of the NICER PSR J0740+6620 radius measurement
- Merger of two neutron stars: predictions from the two-families scenario
- Consequences of a strong phase transition in the dense matter equation of state for the rotational evolution of neutron stars
- Metastability of hadronic compact stars
- Supermassive Neutron Stars Rule Out Twin Stars
- The Radius of PSR J0740+6620 from NICER and XMM-Newton Data
- The possibility of twin star solutions in a model based on lattice QCD thermodynamics
- Two coexisting families of compact stars: observational implications for millisecond pulsars
Cited by in corpus (28)
- Ab-initio QCD calculations impact the inference of the neutron-star-matter equation of state
- Bosonic Dark Matter in Light of the NICER Precise Mass-Radius Measurements
- Dark Matter or Regular Matter in Neutron Stars? How to tell the difference from the coalescence of compact objects
- What neutron stars tell about the hadron-quark phase transition: a Bayesian study
- Constraining the Properties of the Thermonuclear Burst Oscillation Source XTE J1814-338 Through Pulse Profile Modelling
- Twin stars as probes of the nuclear equation of state: effects of rotation through the PSR J0952-0607 pulsar and constraints via the tidal deformability from the GW170817 event
- Hybrid star models in the light of new multi-messenger data
- Relativistic hybrid stars with sequential first-order phase transitions in light of multimessenger constraints
- Ultracompact hybrid stars consistent with multimessenger astrophysics
- Universal relations for compact stars with heavy baryons
- XTE J1814-338: A potential hybrid star candidate
- Curvature of the energy per particle in neutron stars
- Probing hadron-quark phase transition in twin stars using -modes
- New covariant density functionals of nuclear matter for compact star simulations
- Implications of supermassive neutron stars for the form of the equation of state of hybrid stars
- Signatures of quark deconfinement through the r-modes of twin stars
- Confronting new NICER mass-radius measurements with phase transition in dense matter and twin compact stars
- Speed of sound bounds and first-order phase transitions in compact stars
- Impact of the nuclear equation of state on the formation of twin stars
- Comprehensive Analysis of Constructing Hybrid Stars with an RG-consistent NJL Model
- Bayesian Quantification of Observability and Equation of State of Twin Stars
- Observability of dynamical tides in merging eccentric neutron star binaries
- Confronting recent light compact star observations with color-flavor locked quark matter
- Properties of the Object HESS J1731-347 as a Twin Compact Star
- Effective Field Theories for Neutron Stars Physics
- Emergent chirality and superfluidity of parity-doubled baryons in neutron stars
- Dark, deep, deconfining: Phase transitions in neutron stars as powerful probes of hidden sectors
- Binding energy of compact stars and their non-radial oscillations