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We review the current status of the theory of thermal emission from the surface layers of neutron stars with strong magnetic fields $B\sim 10^{10}-10^{15}$ G, including formation of the spectrum in a partially ionized atmosphere and at a…

高能天体物理现象 · 物理学 2023-05-01 A. Y. Potekhin , W. C. G. Ho , G. Chabrier

The unique and highly unusual drift feature reported for PSR J0815+0939, wherein one component's subpulses drift in the direction opposite of the general trend, is a veritable challenge to pulsar theory. In this paper, we observationally…

高能天体物理现象 · 物理学 2019-08-27 Andrzej Szary , Joeri van Leeuwen

The topology of the electromagnetic field around neutron stars severely impacts pulsar physics. While most of the works assume a standard centred dipolar magnetic field model, recently some efforts have been made to explain how inclusion of…

高能天体物理现象 · 物理学 2017-07-27 Anu Kundu , Jerome Petri

The unanticipated discovery of the first close-in planet around 51 Peg has rekindled the notion that shortly after their formation outside the snow line, some planets may have migrated to the proximity of their host stars because of their…

天体物理学 · 物理学 2009-11-13 Randy O. Laine , Douglas N. C. Lin , Shawfeng Dong

The onset of planet formation is actively under debate. Recent mass measurements of disks around protostars suggest an early start of planet formation in the Class 0/I disks. However, dust substructures, one possible signature of forming…

地球与行星天体物理 · 物理学 2025-05-14 P. Nazari , A. D. Sellek , G. P. Rosotti

We explore particle accelerator electrodynamics in the magnetosphere of a rapidly rotating neutron star (NS). We address the importance of a self-consistent treatment of pair production, solving the Poisson equation describing the…

天体物理学 · 物理学 2008-09-09 Kouichi Hirotani

Understanding star formation is problematic as it originates in the large scale dynamics of a galaxy but occurs on the small scale of an individual star forming event. This paper presents the first numerical simulations to resolve the star…

星系天体物理 · 物理学 2015-06-12 Ian A. Bonnell , Clare L. Dobbs , Rowan J. Smith

We consider models of cooling neutron stars with nucleon cores which possess moderately strong triplet-state superfluidity of neutrons. When the internal temperature drops below the maximum of the critical temperature over the core, $T_{\rm…

太阳与恒星天体物理 · 物理学 2014-12-15 P. S. Shternin , D. G. Yakovlev

With Teragauss magnetic fields, surface gravity sufficiently strong to significantly modify light paths, central densities higher than that of a standard nucleus, and rotation periods of only hundredths of a second, young neutron stars are…

天体物理学 · 物理学 2007-05-23 Patrick Slane

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

While giant planet occurrence rates increase with stellar mass, occurrence rates of close-in super-Earths decrease. This is in contradiction to the expectation that the total mass of the planets in a system scale with the protoplanetary…

地球与行星天体物理 · 物理学 2022-11-30 David Vallet , Anna C. Childs , Rebecca G. Martin , Mario Livio , Stephen Lepp

The formation of sunspots and starspots is not yet fully understood and is therefore one of the major open problems in solar and stellar physics. Magnetic flux concentrations can be produced by the negative effective magnetic pressure…

太阳与恒星天体物理 · 物理学 2019-01-09 I. R. Losada , J. Warnecke , A. Brandenburg , N. Kleeorin , I. Rogachevskii

The equation of state and composition of the inner crust of neutron stars at zero temperature are calculated, using the T = 0 version of the TETFSI (temperature-dependent extended Thomas-Fermi plus Strutinsky integral) method, for each of a…

核理论 · 物理学 2012-12-05 J. M. Pearson , N. Chamel , S. Goriely , C. Ducoin

The thermal emission detected from the millisecond pulsar J0437-4715 is not explained by standard cooling models of neutron stars without a heating mechanism. We investigated three heating mechanisms controlled by the rotational braking of…

高能天体物理现象 · 物理学 2015-05-18 Denis Gonzalez , Andreas Reisenegger , Rodrigo Fernandez

A number of disparate observational and theoretical pieces of evidence indicate that, contrary to the conventional wisdom, neutron stars' closed field lines are populated by dense, hot plasma and may be responsible for producing some radio…

天体物理学 · 物理学 2008-11-26 Maxim Lyutikov

Pulsars are rapidly rotating neutron stars and are the outcome of the collapse of the core of a massive star with a mass of the order of or larger than eight solar masses. This process releases a huge gravitational energy of about 10^{53}…

高能物理 - 唯象学 · 物理学 2011-10-27 M. Barkovich , J. C. D'Olivo , R. Montemayor

In giant planet atmosphere modelling, the intrinsic temperature $T_\mathrm{int}$ and radiative-convective boundary (RCB) are important lower boundary conditions. Often in one-dimensional radiative-convective models and in three-dimensional…

地球与行星天体物理 · 物理学 2020-01-16 Daniel P. Thorngren , Peter Gao , Jonathan J. Fortney

Isotopic properties of meteorites provide evidence that multiple dust trap or pressure bumps had to form and persist in the inner Solar System on a timescale of millions of years. The formation of a pressure bump at the outer edge of the…

地球与行星天体物理 · 物理学 2025-10-08 E. Lega , A. Morbidelli , F. Masset , W. Béthune

The dipolar magnetic field structure of the neutron star is modified by the plasma originating in the pulsar magnetopshere. In the simplest case of a stationary axisymmetric force-free magnetosphere, a self-consistent description of the…

高能天体物理现象 · 物理学 2015-06-12 S. A. Petrova

Using 1D and 2D cooling codes we study thermal emission from neutron stars with steady state internal heaters of various intensities and geometries (blobs or spherical layers) located at different depths in the crust. The generated heat…

高能天体物理现象 · 物理学 2014-07-04 A. D. Kaminker , A. A. Kaurov , A. Y. Potekhin , D. G. Yakovlev