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Intermediate-mass binary pulsars (IMBPs) are composed of neutron stars (NSs) and CO/ONe white dwarfs (WDs). It is generally suggested that IMBPs evolve from intermediate-mass X-ray binaries (IMXBs). However, this scenario is difficult to…

Solar and Stellar Astrophysics · Physics 2019-09-17 Tang Wenshi , Liu Dongdong , Wang Bo

The intermediate-mass binary pulsars (IMBPs) are characterized by relatively long spin periods (10 - 200 ms) and massive ($\ga 0.4 M_{\odot}$) white dwarf (WD) companions. Recently, precise mass measurements have been performed for the…

High Energy Astrophysical Phenomena · Physics 2015-05-28 Wen-Cong Chen , Xiang-Dong Li , Ren-Xin Xu

It has been suggested that accretion-induced collapse (AIC) is a non-negligible path for the formation of the observed neutron stars (NSs). An ONe white dwarf (WD) that accretes material from a He star may experience AIC process and…

Solar and Stellar Astrophysics · Physics 2018-03-21 Dongdong Liu , Bo Wang , Wencong Chen , Zhaoyu Zuo , Zhanwen Han

It is difficult for the intermediate-mass X-ray binaries (IMXBs) evolutionary channel to form intermediate-mass binary pulsars (IMBPs) with a short orbital period (less than 3 d) via stable mass transfer. The main reason is that the…

Solar and Stellar Astrophysics · Physics 2015-06-19 Wei-Min Liu , Wen-Cong Chen

We present a systematic study of the evolution of intermediate- and low-mass X-ray binaries consisting of an accreting neutron star of mass $1.0-1.8 M_{\odot}$ and a donor star of mass $1.0-6.0 M_{\odot}$. In our calculations we take into…

High Energy Astrophysical Phenomena · Physics 2015-06-05 Yong Shao , Xiang-Dong Li

The recycling model suggested that low-mass X-ray binaries (LMXBs) could evolve into binary millisecond pulsars (BMSPs). In this work, we attempt to investigate the progenitor properties of BMSPs formed by the recycling evolutionary…

High Energy Astrophysical Phenomena · Physics 2015-05-28 Wei-Min Liu , Wen-Cong Chen

We investigate the formation and evolutionary sequences of Galactic intermediate- and low-mass X-ray binaries (I/LMXBs) by combining binary population synthesis (BPS) and detailed stellar evolutionary calculations. Using an updated BPS code…

High Energy Astrophysical Phenomena · Physics 2015-12-16 Yong Shao , Xiang-Dong Li

We present a systematic study of the evolution of low- and intermediate-mass X-ray binaries (L/IMXBs) consisting of a $1.4\,M_{\odot}$ neutron star (NS) and a donor star of mass $1-8\,M_{\odot}$. Using grids of detailed MESA simulations, we…

High Energy Astrophysical Phenomena · Physics 2026-01-09 Yu-Dong Nie , Yong Shao , Jian-Guo He , Ze-Lin Wei , Shi-Jie Gao , Xiao-Jie Xu , Xiang-Dong Li

Tight binaries of helium white dwarfs (He WDs) orbiting millisecond pulsars (MSPs) will eventually "merge" due to gravitational damping of the orbit. The outcome has been predicted to be the production of long-lived ultra-compact X-ray…

Solar and Stellar Astrophysics · Physics 2017-06-21 Rahul Sengar , Thomas M. Tauris , Norbert Langer , Alina G. Istrate

Millisecond pulsars (MSPs) are generally believed to be old neutron stars (NSs), formed via type Ib/c core-collapse supernovae (SNe), which have been spun up to high rotation rates via accretion from a companion star in a low-mass X-ray…

Solar and Stellar Astrophysics · Physics 2015-06-17 Thomas M. Tauris , Debashis Sanyal , Sung-Chul Yoon , Norbert Langer

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

Binary millisecond pulsars with a massive white dwarf (WD) companion are intermediate-mass binary pulsars (IMBPs). They are formed via the Case BB Roche-lobe overflow evolution channel if they are in compact orbits with an orbital period of…

High Energy Astrophysical Phenomena · Physics 2025-02-03 Z. L. Yang , J. L. Han , T. Wang , P. F. Wang , W. Q. Su , W. C. Chen , C. Wang , D. J. Zhou , Y. Yan , W. C. Jing , N. N. Cai , L. Xie , J. Xu , H. G. Wang , R. X. Xu

Eclipsing millisecond pulsars (MSPs) are a type of pulsar binaries with close orbits ($\lesssim1.0\,$d). They are important objects for studying the accretion history of neutron stars (NSs), pulsar winds, and the origin of isolated MSPs,…

Solar and Stellar Astrophysics · Physics 2025-05-23 Yunlang Guo , Bo Wang , Xiangdong Li , Dongdong Liu , Wenshi Tang

It is generally believed that Ultracompact X-ray binaries (UCXBs) evolved from binaries consisting of a neutron star accreting from a low-mass white dwarf or helium star where mass transfer is driven by gravitational radiation. However, the…

Solar and Stellar Astrophysics · Physics 2016-10-24 Wen-Cong Chen , Philipp Podsiadlowski

Magnetic braking (MB) mechanism plays a vital role throughout the evolution of low-mass X-ray binaries (LMXBs). Considering the standard MB prescription, the initial orbital periods of LMXBs that can evolve into binary millisecond pulsar…

High Energy Astrophysical Phenomena · Physics 2025-11-11 Xing-Peng Yang , Wen-Cong Chen

PSR J1928+1815, the first recycled pulsar-helium (He) star binary discovered by the Five-hundred-meter Aperture Spherical radio Telescope, consists of a 10.55 ms pulsar and a companion star with mass $1-1.6\,M_{\sun}$ in a 0.15-day orbit.…

High Energy Astrophysical Phenomena · Physics 2025-12-02 Zhu-Ling Deng , Xiang-Dong Li , Yong Shao , Ying-Han Mao , Long Jiang

Millisecond pulsars (MSPs) are laboratories for stellar evolution, strong gravity, and ultra-dense matter. Although MSPs are thought to originate in low-mass X-ray binaries (LMXBs), approximately 27% lack a binary companion, and others are…

High Energy Astrophysical Phenomena · Physics 2025-03-12 S. Chanlaridis , D. Ohse , D. E. Alvarez-Castillo , J. Antoniadis , D. Blaschke , V. Danchev , N. Langer , D. Misra

Millisecond pulsar + helium white dwarf (MSP+He WD) binaries are thought to have descended from neutron star (NS) low-mass X-ray binaries (LMXBs). The NSs accreted from the progenitors of the WDs and their spin periods were accordingly…

High Energy Astrophysical Phenomena · Physics 2024-08-30 Zhe Cui , Xiang-Dong Li

Recent observations have unveiled a population of pulsars with spin periods of a few minutes to hours that lie beyond the traditional ``death line.'' If they originate from neutron stars (NSs), the existence of such ultra-long period…

High Energy Astrophysical Phenomena · Physics 2025-07-16 Savannah Cary , Wenbin Lu , Calvin Leung , Tin Long Sunny Wong

The formation and evolution of binaries which contain two neutron stars or a neutron star with a black hole are discussed in detail. The evolution of the distributions in orbital period and eccentricity for neutron star binaries are studied…

Astrophysics · Physics 2016-08-30 Simon F. Portegies Zwart , Lev R. Yungelson
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