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The formation of ultra-compact X-ray binaries (UCXBs) has not been well understood. Previous works show that ultra-short orbital periods ($<1$ hr) may be reached through mass transfer driven by magnetic braking in normal…

High Energy Astrophysical Phenomena · Physics 2011-02-11 Bo Ma , Xiang-Dong Li

The formation and evolution of low-mass X-ray binaries (LMXBs) is not well understood. The properties of a population of LMXBs depend on a number of uncertain aspects of binary evolution, and population studies offers a relatively new way…

High Energy Astrophysical Phenomena · Physics 2011-10-18 R. Voss

Strange quark stars (SSs) may originate from accreting neutron stars (NSs) in low-mass X-ray binaries (LMXBs). Assuming that conversion of NS matter to SSs occurs when the core density of accreting NS reaches to the density of quark…

Solar and Stellar Astrophysics · Physics 2015-06-15 Chunhua Zhu , Guoliang Lv , Zhaojun Wang , Jinzhong Liu

Millisecond pulsars (MSPs) are generally believed to be old neutron stars (NSs) which have been spun up to high rotation rates via accretion of matter from a companion star in a low-mass X-ray binary (LMXB). However, many details of this…

Solar and Stellar Astrophysics · Physics 2014-11-11 Alina Istrate , Thomas Tauris , Norbert Langer

In this paper, the second of a series, we study the stellar dynamical and evolutionary processes leading to the formation of compact binaries containing neutron stars (NSs) in dense globular clusters (GCs). For this study, 70 dense clusters…

Astrophysics · Physics 2009-11-13 N. Ivanova , C. Heinke , F. A. Rasio , K. Belczynski , J. Fregeau

As has only recently been recognized, X-ray binaries with intermediate-mass secondaries are much more important than previously believed. To assess the relative importance of low- and intermediate-mass X-ray binaries (LMXBs and IMXBs), we…

Astrophysics · Physics 2015-05-20 Philipp Podsiadlowski , Saul Rappaport , Eric Pfahl

Recent studies revealed discrepancies between observations and the predictions of the standard magnetic braking (MB). Although alternative models have been broadly discussed in neutron star binaries, they have not been systematically tested…

High Energy Astrophysical Phenomena · Physics 2026-05-27 Wen-Shi Tang , Xiang-Dong Li , Zhe Cui , Zhu-Ling Deng , Wei-Min Gu

The evolution of low-mass contact binaries is influenced by angular-momentum loss, mass and energy transfer, and the nuclear evolution of the components. They have periods shorter than one day, and we expect their period evolution to be…

Solar and Stellar Astrophysics · Physics 2025-10-22 Matthias Fabry , Andrej Prša

Low-mass X-ray binaries (LMXBs) are systems in which a low-mass companion transfers mass via Roche-lobe overflow onto a black hole (BH) or a weakly magnetized neutron star (NS). It is believed that both the solid surface and the magnetic…

High Energy Astrophysical Phenomena · Physics 2015-05-28 Shan-Shan Weng , Shuang-Nan Zhang

The motion of neutron stars (NSs) in the Galaxy is largely dependent on natal kicks received by the NSs during supernova explosions. Thus, the measured peculiar velocities of NS high-mass X-ray binaries (HMXBs) provide valuable clues to…

High Energy Astrophysical Phenomena · Physics 2025-05-22 Xiangyu Ivy Wang , Xiang-Dong Li

In this Letter we examine the idea that a subset of short-period black-hole low-mass X-ray binaries could be powered by the mass transfer from pre-main sequence donors. As the star contracts towards the main sequence, the strong magnetic…

Astrophysics · Physics 2009-11-11 Natalia Ivanova

The paucity of known High-Mass X-Ray Binaries (HMXB) with naked He donor stars (hereafter He star) in the Galaxy has been noted over the years as a surprising fact, given the significant number of Galactic HMXBs containing H-rich donors,…

Astrophysics of Galaxies · Physics 2015-06-03 T. Linden , F. Valsecchi , V. Kalogera

Millisecond pulsars (MSPs) are generally agreed to originate in low-mass X-ray binaries (LMXBs), in which mass transfer onto the neutron stars spins them up to their observed, fast rotation. The lack of MSPs and LMXBs rotating near break-up…

Astrophysics · Physics 2009-11-07 Andreas Reisenegger , Axel Bonacic

The observed X-ray pulse period of OB-type high-mass X-ray binary (HMXB) pulsars are typically longer than 100 seconds. It is considered that the interaction between the strong magnetic field of neutron star and the wind matter could cause…

High Energy Astrophysical Phenomena · Physics 2020-09-30 Shigeyuki Karino

High Mass X-ray Binaries (HMXBs) are interesting objects that provide a wide range of observational probes to the nature of the two stellar components, accretion process, stellar wind and orbital parameters of the systems. A large fraction…

High Energy Astrophysical Phenomena · Physics 2011-11-07 Biswajit Paul , Sachindra Naik

We continue exploring our understanding of the collective properties of X-ray binaries in the stellar fields (i.e., outside globular clusters) of normal galaxies, introduced in Paper I of this series, where we considered high-mass X-ray…

High Energy Astrophysical Phenomena · Physics 2015-06-12 Harshal Bhadkamkar , Pranab Ghosh

Magnetic wind braking drives the spin-down of low-mass stars and the evolution of most interacting binary stars. A magnetic braking prescription that was claimed to reproduce both the period distribution of cataclysmic variables (CVs) and…

Solar and Stellar Astrophysics · Physics 2024-10-10 Valentina Ortúzar-Garzón , Matthias R. Schreiber , Diogo Belloni

Continuing our exploration of the collective properties of low-mass X-ray binaries (LMXBs) in the stellar fields of normal galaxies, we compute in this paper the expected X-ray luminosity function (XLF) of LMXBs, starting from the results…

High Energy Astrophysical Phenomena · Physics 2013-01-08 Harshal Bhadkamkar , Pranab Ghosh

Weakened magnetic braking (WMB) was originally proposed in 2016 to explain anomalously rapid rotation in old field stars observed by the Kepler mission. The proximate cause was suggested to be a transition in magnetic morphology from larger…

Symbiotic X-ray binaries (SyXBs) comprise a rare class of low-mass X-ray binaries. We study the Galactic SyXBs, which we consider as detached binaries composed of low-mass giants and wind-fed neutron star companions, by simulation of the…

Solar and Stellar Astrophysics · Physics 2015-06-05 G. -L. Lu , C. -H. Zhu , K. A. Postnov , L. R. Yungelson , A. G. Kuranov , N. Wang