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In this paper, we discuss the impact of rotation on the particle composition of rotating neutron stars (pulsars). Particular emphasis is put on the formation of quark matter during stellar spin-down, driven by continuous gravitational…

高能天体物理现象 · 物理学 2017-09-06 R. D. Mellinger , F. Weber , W. Spinella , G. A. Contrera , M. Orsaria

Six of the eight double neutron stars known in the Galactic disk have low orbital eccentricities (< 0.27) indicating that their second-born neutron stars received only very small velocity kicks at birth. This is similar to the case of the…

天体物理学 · 物理学 2009-11-13 E. P. J. van den Heuvel

Using twenty long-term 3D core-collapse supernova simulations, we find that lower compactness progenitors that explode quasi-spherically due to the short delay to explosion experience smaller neutron star recoil kicks in the $\sim$100$-$200…

高能天体物理现象 · 物理学 2024-02-01 Adam Burrows , Tianshu Wang , David Vartanyan , Matthew S. B. Coleman

We propose the model describing the observed multiple fast radio bursts due to the close encounters and collisions of neutron stars in the central clusters of the evolved galactic nuclei. The subsystem of neutron star cluster may originate…

高能天体物理现象 · 物理学 2017-12-07 V. I. Dokuchaev , Yu. N. Eroshenko

We have computed an extensive grid of binary evolution tracks to represent low- and intermediate mass X-ray binaries (LMXBs and IMXBs). The grid includes 42,000 models which covers 60 initial donor masses over the range of 1-4 solar masses…

高能天体物理现象 · 物理学 2015-05-20 Jinrong Lin , S. Rappaport , Ph. Podsiadlowski , L. Nelson , B. Paxton , P. Todorov

A close high-mass binary system consisting of a neutron star (NS) and a massive OB supergiant companion is expected to lead to a TZO structure, which consists of a NS core and a stellar envelope. We use the scenario machine program to…

高能天体物理现象 · 物理学 2014-12-10 Jing Wang , Hsiang-Kuang Chang

Transitions of nuclear compositions in the crust of a neutron star induced by stellar spin-down are evaluated at zero temperature. We construct a compressible liquid-drop model for the energy of nuclei immersed in a neutron gas, including…

天体物理学 · 物理学 2016-08-30 Kei Iida , Katsuhiko Sato

A scenario for SGRs is introduced in which gravitational radiation reaction effects drive the dynamics of an ultrashort orbital period X-ray binary embracing a high-mass donor white dwarf (WD) to a rapidly rotating low magnetised massive…

天体物理学 · 物理学 2011-05-24 Herman J. Mosquera Cuesta

Two types of supernova are thought to produce the overwhelming majority of neutron stars in the Universe. The first type, iron-core collapse supernovae, occurs when a high-mass star develops a degenerate iron core that exceeds the…

太阳与恒星天体物理 · 物理学 2015-06-03 Christian Knigge , Malcolm Coe , Philipp Podsiadlowski

Evidence from the WMAP polarization data indicates that the Universe may have been reionized at very high redshift. It is often suggested that the ionizing UV flux originates from an early population of massive or very massive stars.…

天体物理学 · 物理学 2016-08-30 Frederic Daigne , Keith A. Olive , Pearl Sandick , Elisabesth Vangioni

The magnetic fields of neutron stars have a large range (~3e10 - 1e15 G). There may be a tendency for more highly magnetized neutron stars to come from more massive stellar progenitors, but other factors must also play a role. When combined…

高能天体物理现象 · 物理学 2015-05-20 Roger A. Chevalier

These lectures attempt to expose the most important ideas, which have been proposed to explain the formation of stars with particular emphasis on the formation of brown dwarfs and low-mass stars. We first describe the important physical…

星系天体物理 · 物理学 2015-06-04 Patrick Hennebelle

The formation of stars from gas drives the evolution of galaxies. Yet, it remains one of the hardest processes to understand when trying to connect observations of stellar and galaxy populations to models of large scale structure formation.…

星系天体物理 · 物理学 2015-06-11 Mordecai-Mark Mac Low

When rotating primordial black holes evaporate via Hawking radiation, their rotational energy and mass are dissipated with different dynamics. We investigate the effect of these dynamics on the production of dark radiation -- in the form of…

宇宙学与河外天体物理 · 物理学 2025-01-10 Andrew Cheek , Lucien Heurtier , Yuber F. Perez-Gonzalez , Jessica Turner

Low-mass X-ray binaries (LMXBs) with neutron stars show quite different features which depend on the rate of mass transfer from the donor star. With a high transfer rate the Z sources are in a persistent soft spectral state, with a moderate…

高能天体物理现象 · 物理学 2024-06-05 E. Meyer-Hofmeister , Huaqing Cheng , B. F. Liu

Precise astrometric measurement with Gaia satellite resulted in the discovery of tens of wide binary systems consisting of a Sun-like star and an invisible component. The latter can be a white dwarf, a neutron star, or a black hole. In this…

高能天体物理现象 · 物理学 2025-01-28 Marina Afonina , Sergei Popov

We summarize the channels formation of neutron stars (NS) in single or binary evolution and the classic recycling scenario by which mass accretion by a donor companion accelerates old NS to millisecond pulsars (MSP). We consider the…

高能天体物理现象 · 物理学 2020-11-24 Francesca D'Antona , Marco Tailo

We present results of a binary population synthesis study on the orbital period distribution of wide binary millisecond pulsars forming through four evolutionary channels. In three of the channels, the progenitor of the millisecond pulsar…

天体物理学 · 物理学 2007-05-23 B. Willems , U. Kolb

A model for the formation and evolution of binary millisecond radio pulsars in systems with low mass companions (< 0.1 Msun) is investigated using a binary population synthesis technique. Taking into account the non conservative evolution…

太阳与恒星天体物理 · 物理学 2015-06-16 P. D. Kiel , R. E Taam

We present the discovery of a likely new redback millisecond pulsar binary associated with the \emph{Fermi} $\gamma$-ray source 4FGL J2333.1--5527. Using optical photometric and spectroscopic observations from the SOAR telescope, we…