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We survey the current status of understanding of pairing and superfluidity of neutrons and protons in neutron stars from a theoretical perspective, with emphasis on basic physical properties. During the past two decades, the blossoming of…

核理论 · 物理学 2015-04-15 A. Gezerlis , C. J. Pethick , A. Schwenk

We study the cooling of superfluid neutron stars whose cores consist of nucleon matter with the Akmal-Pandharipande-Ravenhall equation of state. This equation of state opens the powerful direct Urca process of neutrino emission in the…

天体物理学 · 物理学 2014-10-13 M. E. Gusakov , A. D. Kaminker , D. G. Yakovlev , O. Y. Gnedin

We have developed the anisotropic heat transport equation for rotating neutron stars. With a simple model of neutron star, we also model the propagation of heat pulses result from transient energy releases inside the star. Even in slow…

天体物理学 · 物理学 2007-05-23 C. Y. Hui , K. S. Cheng

The recent temperature measurements of the two older isolated neutron stars PSR 1929+10 and PSR 0950+08 (ages of $3\times 10^6$ and $2\times 10^7$ yr, respectively) indicate that these objects are heated. A promising candidate heat source…

天体物理学 · 物理学 2009-10-31 Michelle B. Larson , Bennett Link

In a simple model it is demonstrated that the neutron star surface temperature evolution is sensitive to the phase state of the triplet superfluid condensate. A multicomponent triplet pairing of superfluid neutrons in the core of a neutron…

太阳与恒星天体物理 · 物理学 2015-01-08 Lev B. Leinson

The crust of a neutron star is known to melt at a temperature that increases with increasing matter density, up to about $10^{10}$ K. At such high temperatures and beyond, the crustal ions are put into collective motion and the associated…

高能天体物理现象 · 物理学 2023-09-06 H. Dinh Thi , A. F. Fantina , F. Gulminelli

In this work we study properties of neutron star crusts, where matter is expected to consist of nuclei surrounded by superfluid neutrons and a homogeneous background of relativistic electrons. The nuclei are disposed in a Coulomb lattice,…

核理论 · 物理学 2009-10-28 Oe. Elgaroey , L. Engvik , E. Osnes , F. V. De Blasio , M. Hjorth-Jensen , G. Lazzari

A new classification of neutron star cooling scenarios, involving either ``minimal'' cooling or ``enhanced'' cooling is proposed. The minimal cooling scenario replaces and extends the so-called standard cooling scenario to include neutrino…

天体物理学 · 物理学 2011-09-29 Dany Page , James M. Lattimer , Madappa Prakash , Andrew W. Steiner

The neutrino emission due to formation and breaking of Cooper pairs of protons in superconducting cores of neutron stars is considered with taking into account the electromagnetic coupling of protons to ambient electrons. Our calculation…

高能物理 - 唯象学 · 物理学 2017-08-23 L. B. Leinson

We study the "minimal" cooling scenario of superfluid neutron stars with nucleon cores, where the direct Urca process is forbidden and the enhanced cooling is produced by the neutrino emission due to Cooper pairing of neutrons. Extending…

天体物理学 · 物理学 2009-11-13 A. D. Kaminker , M. E. Gusakov , D. G. Yakovlev , O. Y. Gnedin

We study the impact of finite-temperature effects in numerical-relativity simulations of binary neutron star mergers with microphysical equations of state and neutrino transport in which we vary the effective nucleon masses in a controlled…

高能天体物理现象 · 物理学 2023-08-01 Jacob Fields , Aviral Prakash , Matteo Breschi , David Radice , Sebastiano Bernuzzi , André da Silva Schneider

We investigate the cooling of neutron stars with relativistic and non-relativistic models of dense nuclear matter. We focus on the effects of uncertainties originated from the nuclear models, the composition of elements in the envelope…

核理论 · 物理学 2017-02-21 Yeunhwan Lim , Chang Ho Hyun , Chang-Hwan Lee

The neutron star starts to cool down shortly after its birth by emitting neutrinos. As it becomes cold enough, the Cooper pairs of neutrons are formed, triggering a superfluid transition. Previous studies on neutron superfluidity focused on…

核理论 · 物理学 2025-09-10 Hao-Fu Zhu , Guo-Zhu Liu , Jing-Rong Wang , Xufen Wu

Earth-like planets within the liquid water habitable zone of M type stars may evolve into synchronous rotators. On these planets, the sub-stellar hemisphere experiences perpetual daylight while the opposing anti-stellar hemisphere…

地球与行星天体物理 · 物理学 2015-06-23 Jacob Haqq-Misra , Ravi Kumar Kopparapu

We present a brief, observational review about the study of the cooling behaviour of accretion-heated neutron stars and the inferences about the neutron-star crust and core that have been obtained from these studies. Accretion of matter…

高能天体物理现象 · 物理学 2017-09-22 Rudy Wijnands , Nathalie Degenaar , Dany Page

The current picture of the collapse and explosion of massive stars and the formation of neutron stars is reviewed. According to the favored scenario, however by no means proven and undisputed, neutrinos deposit the energy of the explosion…

天体物理学 · 物理学 2010-11-19 H. -Th. Janka , K. Kifonidis , M. Rampp

An approach is proposed to nuclear pairing at finite temperature and angular momentum, which includes the effects of the quasiparticle-number fluctuation and dynamic coupling to pair vibrations within the self-consistent quasiparticle…

核理论 · 物理学 2009-11-13 N. Dinh Dang , N. Quang Hung

Neutron stars are compact objects rotating at high speed, up to a substantial fraction of the speed of light (up to 20\% for millisecond pulsars) and possessing ultra-strong electromagnetic fields (close to and sometimes above the quantum…

高能天体物理现象 · 物理学 2020-01-13 Jérôme Pétri

We study the quiescent luminosities of accreting neutron stars by a new mechanism as neutrino heating for additional deep crustal heating, where the neutrino heating is produced by charged pions decay from the nuclear collisions on the…

高能天体物理现象 · 物理学 2021-12-15 He-Lei Liu , Zi-Gao Dai , Guo-Liang Lv , Akira Dohi , Gao-Chan Yong , Masa-aki Hashimoto

We calculate and provide analytic fits of the factors which describe the reduction of the neutrino emissivity of modified Urca and nucleon-nucleon bremsstrahlung processes by superfluidity of neutrons and protons in neutron-star cores. We…

天体物理学 · 物理学 2011-07-19 M. E. Gusakov