Exotic Cores with and without Dark-Matter Admixtures in Compact Stars
Abstract
:1. Introduction
2. Corona with Constant Sound Velocity EoS
2.1. A Limiting Case: Infinite Sound Veleocity
2.2. Finite Sound Velocity
3. Corona with Buchdahl’s EoS and NYΔ DD-EM2
4. Summary
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Appendix A. Dark-Matter/Mirror-World Admixtures in Neutron Stars with Phase Transition
References
- Pang, P.T.H.; Tews, I.; Coughlin, M.W.; Bulla, M.; Broeck, C.V.D.; Dietrich, T. Nuclear Physics Multimessenger Astrophysics Constraints on the Neutron Star Equation of State: Adding NICER’s PSR J0740+6620 Measurement. Astrophys. J. 2021, 14, 922. [Google Scholar] [CrossRef]
- Annala, E.; Gorda, T.; Katerini, E.; Kurkela, A.; Nättilä, J.; Paschalidis, V.; Vuorinen, A. Multimessenger constraints for ultra-dense matter. Phys. Rev. X 2022, 12, 011058. [Google Scholar]
- Yu, J.; Song, H.; Ai, S.; Gao, H.; Wang, F.; Wang, Y.; Lu, Y.; Fang, W.; Zhao, W. Multimessenger Detection Rates and Distributions of Binary Neutron Star Mergers and Their Cosmological Implications. Astrophys. J. 2021, 916, 54. [Google Scholar] [CrossRef]
- Nicholl, M.; Margalit, B.; Schmidt, P.; Smith, G.P.; Ridley, E.J.; Nuttall, J. Tight multimessenger constraints on the neutron star equation of state from GW170817 and a forward model for kilonova light-curve synthesis. Mon. Not. Roy. Astron. Soc. 2021, 505, 3016–3032. [Google Scholar] [CrossRef]
- Margutti, R.; Chornock, R. First Multimessenger Observations of a Neutron Star Merger. Ann. Rev. Astron. Astrophys. 2021, 59, 155. [Google Scholar] [CrossRef]
- Tang, S.P.; Jiang, J.L.; Gao, W.H.; Fan, Y.Z.; Wei, D.M. Constraint on phase transition with the multimessenger data of neutron stars. Phys. Rev. D 2021, 103, 063026. [Google Scholar] [CrossRef]
- Tews, I.; Pang, P.T.H.; Dietrich, T.; Coughlin, M.W.; Antier, S.; Bulla, M.; Heinzel, J.; Issa, L. On the Nature of GW190814 and Its Impact on the Understanding of Supranuclear Matter. Astrophys. J. Lett. 2021, 908, L1. [Google Scholar] [CrossRef]
- Silva, H.O.; Holgado, A.M.; Cardenas-Avendano, A.; Yunes, N. Astrophysical and theoretical physics implications from multimessenger neutron star observations. Phys. Rev. Lett. 2021, 126, 181101. [Google Scholar] [CrossRef]
- Riley, T.E.; Watts, A.L.; Ray, P.S.; Bogdanov, S.; Guillot, S.; Morsink, S.M.; Bilous, A.V.; Arzoumanian, Z.; Choudhury, D.; Deneva, J.S.; et al. A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy. Astrophys. J. Lett. 2021, 918, L27. [Google Scholar] [CrossRef]
- Miller, M.C.; Lamb, F.K.; Dittmann, A.J.; Bogdanov, S.; Arzoumanian, Z.; Gendreau, K.C.; Guillot, S.; Ho, W.C.G.; Lattimer, J.M.; Loewenstein, M.; et al. The Radius of PSR J0740+6620 from NICER and XMM-Newton Data. Astrophys. J. Lett. 2021, 918, L28. [Google Scholar] [CrossRef]
- Miller, M.C.; Lamb, F.K.; Dittmann, A.J.; Bogdanov, S.; Arzoumanian, Z.; Gendreau, K.C.; Guillot, S.; Harding, A.K.; Ho, W.C.G.; Lattimer, J.M.; et al. PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter. Astrophys. J. Lett. 2019, 887, L24. [Google Scholar] [CrossRef] [Green Version]
- Chatziioannou, K. Neutron star tidal deformability and equation of state constraints. Gen. Rel. Grav. 2020, 52, 109. [Google Scholar] [CrossRef]
- Christian, J.E.; Schaffner-Bielich, J. Twin Stars and the Stiffness of the Nuclear Equation of State: Ruling Out Strong Phase Transitions below 1.7n0 with the New NICER Radius Measurements. Astrophys. J. Lett. 2020, 894, L8. [Google Scholar] [CrossRef]
- Motta, T.F.; Thomas, A.W. The role of baryon structure in neutron stars. Mod. Phys. Lett. A 2022, 37, 2230001. [Google Scholar] [CrossRef]
- Jokela, N.; Järvinen, M.; Remes, J. Holographic QCD in the NICER era. Phys. Rev. D 2022, 105, 086005. [Google Scholar] [CrossRef]
- Kovensky, N.; Poole, A.; Schmitt, A. Building a realistic neutron star from holography. Phys. Rev. D 2022, 105, 034022. [Google Scholar] [CrossRef]
- Zhang, N.B.; Li, B.A. Impact of NICER’s Radius Measurement of PSR J0740+6620 on Nuclear Symmetry Energy at Suprasaturation Densities. Astrophys. J. 2021, 921, 111. [Google Scholar] [CrossRef]
- Pereira, J.P.; Bejger, M.; Tonetto, L.; Lugones, G.; Haensel, P.; Zdunik, J.L.; Sieniawska, M. Probing elastic quark phases in hybrid stars with radius measurements. Astrophys. J. 2021, 910, 145. [Google Scholar] [CrossRef]
- Christian, J.E.; Schaffner-Bielich, J. Supermassive Neutron Stars Rule Out Twin Stars. Phys. Rev. D 2021, 103, 063042. [Google Scholar] [CrossRef]
- Gerlach, U.H. Equation of State at Supranuclear Densities and the Existence of a Third Family of Superdense Stars. Phys. Rev. 1968, 172, 1325. [Google Scholar] [CrossRef]
- Kämpfer, B. On the Possibility of Stable Quark and Pion Condensed Stars. J. Phys. A 1981, 14, L471. [Google Scholar] [CrossRef]
- Kämpfer, B. On stabilizing effects of relativity in cold spheric stars with a phase transition in the interior. Phys. Lett. B 1981, 101, 366. [Google Scholar] [CrossRef]
- Li, J.J.; Sedrakian, A.; Alford, M. Relativistic hybrid stars with sequential first-order phase transitions and heavy-baryon envelopes. Phys. Rev. D 2020, 101, 063022. [Google Scholar] [CrossRef] [Green Version]
- Alford, M.G.; Sedrakian, A. Compact stars with sequential QCD phase transitions. Phys. Rev. Lett. 2017, 119, 161104. [Google Scholar] [CrossRef] [PubMed] [Green Version]
- Malfatti, G.; Orsaria, M.G.; Ranea-Sandoval, I.F.; Contrera, G.A.; Weber, F. Delta baryons and diquark formation in the cores of neutron stars. Phys. Rev. D 2020, 102, 063008. [Google Scholar] [CrossRef]
- Pereira, J.P.; Bejger, M.; Zdunik, J.L.; Haensel, P. Differentiating sharp phase transitions from mixed states in neutron stars. arXiv 2022, arXiv:2201.01217. [Google Scholar]
- Bejger, M.; Blaschke, D.; Haensel, P.; Zdunik, J.L.; Fortin, M. Consequences of a strong phase transition in the dense matter equation of state for the rotational evolution of neutron stars. Astron. Astrophys. 2017, 600, A39. [Google Scholar] [CrossRef]
- Glendenning, N.K.; Kettner, C. Nonidentical neutron star twins. Astron. Astrophys. 2000, 353, L9. [Google Scholar]
- Jakobus, P.; Motornenko, A.; Gomes, R.O.; Steinheimer, J.; Stoecker, H. The possibility of twin star solutions in a model based on lattice QCD thermodynamics. Eur. Phys. J. C 2021, 81, 41. [Google Scholar] [CrossRef]
- Alford, M.; Braby, M.; Paris, M.W.; Reddy, S. Hybrid stars that masquerade as neutron stars. Astrophys. J. 2005, 629, 969. [Google Scholar] [CrossRef] [Green Version]
- Reed, B.T.; Fattoyev, F.J.; Horowitz, C.J.; Piekarewicz, J. Implications of PREX-2 on the Equation of State of Neutron-Rich Matter. Phys. Rev. Lett. 2021, 126, 172503. [Google Scholar] [CrossRef] [PubMed]
- Annala, E.; Gorda, T.; Kurkela, A.; Nättilä, J.; Vuorinen, A. Evidence for quark-matter cores in massive neutron stars. Nat. Phys. 2020, 16, 907. [Google Scholar] [CrossRef]
- Ayriyan, A.; Blaschke, D.; Grunfeld, A.G.; Alvarez-Castillo, D.; Grigorian, H.; Abgaryan, V. Bayesian analysis of multimessenger M-R data with interpolated hybrid EoS. Eur. Phys. J. A 2021, 57, 318. [Google Scholar] [CrossRef]
- Oter, E.L.; Windisch, A.; Llanes-Estrada, F.J.; Alford, M. nEoS: Neutron Star Equation of State from hadron physics alone. J. Phys. G 2019, 46, 084001. [Google Scholar] [CrossRef] [Green Version]
- Lattimer, J.M.; Prakash, M. The Equation of State of Hot, Dense Matter and Neutron Stars. Phys. Rept. 2016, 621, 127. [Google Scholar] [CrossRef] [Green Version]
- Greif, S.K.; Hebeler, K.; Lattimer, J.M.; Pethick, C.J.; Schwenk, A. Equation of state constraints from nuclear physics, neutron star masses, and future moment of inertia measurements. Astrophys. J. 2020, 901, 155. [Google Scholar] [CrossRef]
- Anzuini, F.; Bell, N.F.; Busoni, G.; Motta, T.F.; Robles, S.; Thomas, A.W.; Virgato, M. Improved treatment of dark matter capture in neutron stars III: Nucleon and exotic targets. J. Cosmol. Astropart. Phys. 2021, 11, 056. [Google Scholar] [CrossRef]
- Bell, N.F.; Busoni, G.; Robles, S. Capture of Leptophilic Dark Matter in Neutron Stars. J. Cosmol. Astropart. Phys. 2019, 06, 054. [Google Scholar] [CrossRef] [Green Version]
- Das, H.C.; Kumar, A.; Kumar, B.; Patra, S.K. Dark Matter Effects on the Compact Star Properties. Galaxies 2022, 10, 14. [Google Scholar] [CrossRef]
- Das, H.C.; Kumar, A.; Patra, S.K. Dark matter admixed neutron star as a possible compact component in the GW190814 merger event. Phys. Rev. D 2021, 104, 063028. [Google Scholar] [CrossRef]
- Blaschke, D.; Ayriyan, A.; Alvarez-Castillo, D.E.; Grigorian, H. Was GW170817 a Canonical Neutron Star Merger? Bayesian Analysis with a Third Family of Compact Stars. Universe 2020, 6, 81. [Google Scholar] [CrossRef]
- Newton, W.G.; Balliet, L.; Budimir, S.; Crocombe, G.; Douglas, B.; Head, T.B.; Langford, Z.; Rivera, L.; Sanford, J. Ensembles of unified crust and core equations of state in a nuclear-multimessenger astrophysics environment. Eur. Phys. J. A 2022, 58, 69. [Google Scholar] [CrossRef]
- Huth, S.; Pang, P.T.H.; Tews, I.; Dietrich, T.; Fèvre, A.L.; Schwenk, A.; Trautmann, W.; Agarwal, K.; Bulla, M.; Coughlin, M.W.; et al. Constraining Neutron-Star Matter with Microscopic and Macroscopic Collisions. arXiv 2021, arXiv:2107.06229. [Google Scholar]
- Raaijmakers, G.; Greif, S.K.; Hebeler, K.; Hinderer, T.; Nissanke, S.; Schwenk, A.; Riley, T.E.; Watts, A.L.; Lattimer, J.M.; Ho, W.C.G. Constraints on the Dense Matter Equation of State and Neutron Star Properties from NICER’s Mass–Radius Estimate of PSR J0740+6620 and Multimessenger Observations. Astrophys. J. Lett. 2021, 918, L29. [Google Scholar] [CrossRef]
- Raaijmakers, G.; Riley, T.E.; Watts, A.L.; Greif, S.K.; Morsink, S.M.; Hebeler, K.; Schwenk, A.; Hinderer, T.; Nissanke, S.; Guillot, S.; et al. A NICER view of PSR J0030+0451: Implications for the dense matter equation of state. Astrophys. J. Lett. 2019, 887, L22. [Google Scholar] [CrossRef] [Green Version]
- Raaijmakers, G.; Greif, S.K.; Riley, T.E.; Hinderer, T.; Hebeler, K.; Schwenk, A.; Watts, A.L.; Nissanke, S.; Guillot, S.; Lattimer, J.M.; et al. Constraining the dense matter equation of state with joint analysis of NICER and LIGO/Virgo measurements. Astrophys. J. Lett. 2020, 893, L21. [Google Scholar] [CrossRef]
- Suleiman, L.; Fortin, M.; Zdunik, J.L.; Haensel, P. Influence of the crust on the neutron star macrophysical quantities and universal relations. Phys. Rev. C 2021, 104, 015801. [Google Scholar] [CrossRef]
- Lattimer, J.M.; Prakash, M. Neutron Star Observations: Prognosis for Equation of State Constraints. Phys. Rept. 2007, 442, 109. [Google Scholar] [CrossRef] [Green Version]
- Klahn, T.; Blaschke, D.; Typel, S.; van Dalen, E.N.E.; Faessler, A.; Fuchs, C.; Gaitanos, T.; Grigorian, H.; Ho, A.; Kolomeitsev, E.E.; et al. Constraints on the high-density nuclear equation of state from the phenomenology of compact stars and heavy-ion collisions. Phys. Rev. C 2006, 74, 035802. [Google Scholar] [CrossRef] [Green Version]
- Most, E.R.; Motornenko, A.; Steinheimer, J.; Dexheimer, V.; Hanauske, M.; Rezzolla, L.; Stoecker, H. Probing neutron-star matter in the lab: Connecting binary mergers to heavy-ion collisions. arXiv 2022, arXiv:2201.13150. [Google Scholar]
- Adamczewski-Musch, J.; Arnold, O.; Behnke, C.; Belounnas, A.; Belyaev, A.; Berger-Chen, J.C.; Biernat, J.; Blanco, A.; Blume, C.; Böhmer, M.; et al. Probing dense baryon-rich matter with virtual photons. Nat. Phys. 2019, 15, 1040. [Google Scholar]
- Stephanov, M.A.; Rajagopal, K.; Shuryak, E.V. Event-by-event fluctuations in heavy ion collisions and the QCD critical point. Phys. Rev. D 1999, 60, 114028. [Google Scholar] [CrossRef] [Green Version]
- Karsch, F. Lattice QCD at high temperature and density. Lect. Notes Phys. 2002, 583, 209. [Google Scholar]
- Fukushima, K.; Hatsuda, T. The phase diagram of dense QCD. Rept. Prog. Phys. 2011, 74, 014001. [Google Scholar] [CrossRef] [Green Version]
- Halasz, A.M.; Jackson, A.D.; Shrock, R.E.; Stephanov, M.A.; Verbaarschot, J.J.M. On the phase diagram of QCD. Phys. Rev. D 1998, 58, 096007. [Google Scholar] [CrossRef]
- Blacker, S.; Bastian, N.U.F.; Bauswein, A.; Blaschke, D.B.; Fischer, T.; Oertel, M.; Soultanis, T.; Typel, S. Constraining the onset density of the hadron-quark phase transition with gravitational-wave observations. Phys. Rev. D 2020, 102, 123023. [Google Scholar] [CrossRef]
- Blaschke, D.; Cierniak, M. Studying the onset of deconfinement with multi-messenger astronomy of neutron stars. Astron. Nachr. 2021, 342, 227. [Google Scholar] [CrossRef]
- Orsaria, M.G.; Malfatti, G.; Mariani, M.; Ranea-Sandoval, I.F.; García, F.; Spinella, W.M.; Contrera, G.A.; Lugones, G.; Weber, F. Phase transitions in neutron stars and their links to gravitational waves. J. Phys. G 2019, 46, 073002. [Google Scholar] [CrossRef] [Green Version]
- Cierniak, M.; Blaschke, D. Hybrid neutron stars in the mass-radius diagram. Astron. Nachr. 2021, 342, 819. [Google Scholar] [CrossRef]
- Kämpfer, B. Phase transitions in dense nuclear matter and explosive neutron star phenomena. Phys. Lett. B 1985, 153, 121. [Google Scholar] [CrossRef]
- Kämpfer, B. Phase transitions in nuclear matter and consequences for neutron stars. J. Phys. G 1983, 9, 1487. [Google Scholar] [CrossRef]
- Schertler, K.; Greiner, C.; Schaffner-Bielich, J.; Thoma, M.H. Quark phases in neutron stars and a ’third family’ of compact stars as a signature for phase transitions. Nucl. Phys. A 2000, 677, 463. [Google Scholar] [CrossRef] [Green Version]
- Christian, J.E.; Zacchi, A.; Schaffner-Bielich, J. Classifications of Twin Star Solutions for a Constant Speed of Sound Parameterized Equation of State. Eur. Phys. J. A 2018, 54, 28. [Google Scholar] [CrossRef] [Green Version]
- Migdal, A.B.; Chernoutsan, A.I.; Mishustin, I.N. Pion condensation and dynamics of neutron stars. Phys. Lett. B 1979, 83, 158–160. [Google Scholar] [CrossRef]
- Kämpfer, B. On the collapse of neutron stars and stellar cores to pion-condensed stars. Astrophys. Space Sci. 1983, 93, 185–197. [Google Scholar] [CrossRef]
- Zdunik, J.L.; Haensel, P.; Schaeffer, R. Phase transitons in stellar cores, II Equilibrium configurations in general relativity. Astron. Astrophys. 1987, 172, 95. [Google Scholar]
- Schaffner-Bielich, J. Compact Star Physics; Cambridge University Press: Cambridge, UK, 2020. [Google Scholar]
- Buchdahl, H.A. General-relativistic fluid spheres. III. A static gaseous model. Astrophys. J. 1967, 147, 310. [Google Scholar] [CrossRef]
- Lattimer, J.M.; Prakash, M. Neutron star structure and the equation of state. Astrophys. J. 2001, 550, 426. [Google Scholar] [CrossRef] [Green Version]
- Dengler, Y.; Schaffner-Bielich, J.; Tolos, L. Second Love number of dark compact planets and neutron stars with dark matter. Phys. Rev. D 2022, 105, 043013. [Google Scholar] [CrossRef]
- Karkevandi, D.R.; Shakeri, S.; Sagun, V.; Ivanytskyi, O. Bosonic dark matter in neutron stars and its effect on gravitational wave signal. Phys. Rev. D 2022, 105, 023001. [Google Scholar] [CrossRef]
- Zdunik, J.L.; Haensel, P.; Schaeffer, R. Phase transitons in stellar cores, I Equilibrium configurations. Astron. Astrophys. 1983, 126, 121. [Google Scholar]
- Alizzi, A.; Silagadze, Z.K. Dark photon portal into mirror world. Mod. Phys. Lett. A 2021, 36, 2150215. [Google Scholar] [CrossRef]
- Luzio, L.D.; Gavela, B.; Quilez, P.; Ringwald, A. Dark matter from an even lighter QCD axion: Trapped misalignment. J. Cosmol. Astropart. Phys. 2021, 10, 001. [Google Scholar] [CrossRef]
- Beradze, R.; Gogberashvili, M.; Sakharov, A.S. Binary Neutron Star Mergers with Missing Electromagnetic Counterparts as Manifestations of Mirror World. Phys. Lett. B 2020, 804, 135402. [Google Scholar] [CrossRef]
- Kobzarev, I.Y.; Okun, L.B.; Pomeranchuk, I.Y. On the possibility of experimental observation of mirror particles. Sov. J. Nucl. Phys. 1966, 3, 837. [Google Scholar]
- Blinnikov, S.I.; Khlopov, M.Y. On the possible effects of “mirror” particles. Sov. J. Nucl. Phys. 1982, 36, 472. [Google Scholar]
- Hodges, H.M. Mirror baryons as the dark matter. Phys. Rev. D 1993, 47, 456. [Google Scholar] [CrossRef]
- Goldman, I.; Mohapatra, R.N.; Nussinov, S. Bounds on neutron-mirror neutron mixing from pulsar timing. Phys. Rev. D 2019, 100, 123021. [Google Scholar] [CrossRef] [Green Version]
- Berezhiani, Z. Antistars or antimatter cores in mirror neutron stars? arXiv 2021, arXiv:2106.11203. [Google Scholar]
- Berezhiani, Z.; Bento, L. Neutron-mirror neutron oscillations: How fast might they be? Phys. Rev. Lett. 2006, 96, 081801. [Google Scholar] [CrossRef] [Green Version]
- Berezhiani, Z.; Comelli, D.; Villante, F.L. The Early mirror universe: Inflation, baryogenesis, nucleosynthesis and dark matter. Phys. Lett. B 2001, 503, 362–375. [Google Scholar] [CrossRef] [Green Version]
- Berezhiani, Z.; Gianfagna, L.; Giannotti, M. Strong CP problem and mirror world: The Weinberg-Wilczek axion revisited. Phys. Lett. B 2001, 500, 286–296. [Google Scholar] [CrossRef] [Green Version]
- Berezhiani, Z. Mirror world and its cosmological consequences. Int. J. Mod. Phys. A 2004, 19, 3775–3806. [Google Scholar] [CrossRef]
- Berezhiani, Z.; Biondi, R.; Mannarelli, M.; Tonelli, F. Neutron-mirror neutron mixing and neutron stars. Eur. Phys. J. C 2022, 81, 1036. [Google Scholar] [CrossRef]
- Schulze, R.; Kämpfer, B. Cold quark stars from hot lattice QCD. arXiv 2009, arXiv:0912.2827. [Google Scholar]
- Li, J.J.; Sedrakian, A.; Alford, M. Relativistic hybrid stars in light of the NICER PSR J0740+6620 radius measurement. Phys. Rev. D 2021, 104, L121302. [Google Scholar] [CrossRef]
- Ranea-Sandoval, I.F.; Han, S.; Orsaria, M.G.; Contrera, G.A.; Weber, F.; Alford, M.G. Constant-sound-speed parametrization for Nambu–Jona-Lasinio models of quark matter in hybrid stars. Phys. Rev. C 2016, 93, 045812. [Google Scholar] [CrossRef]
- Alford, M.G.; Han, S. Characteristics of hybrid compact stars with a sharp hadron-quark interface. Eur. Phys. J. A 2016, 52, 62. [Google Scholar] [CrossRef]
- Cierniak, M.; Blaschke, D. The special point on the hybrid star mass–radius diagram and its multi–messenger implications. Eur. Phys. J. Spec. Top. 2020, 229, 3663. [Google Scholar] [CrossRef]
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Zöllner, R.; Kämpfer, B. Exotic Cores with and without Dark-Matter Admixtures in Compact Stars. Astronomy 2022, 1, 36-48. https://doi.org/10.3390/astronomy1010005
Zöllner R, Kämpfer B. Exotic Cores with and without Dark-Matter Admixtures in Compact Stars. Astronomy. 2022; 1(1):36-48. https://doi.org/10.3390/astronomy1010005
Chicago/Turabian StyleZöllner, Rico, and Burkhard Kämpfer. 2022. "Exotic Cores with and without Dark-Matter Admixtures in Compact Stars" Astronomy 1, no. 1: 36-48. https://doi.org/10.3390/astronomy1010005