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It is thought that neutron stars in low-mass binary systems can accrete matter and angular momentum from the companion star and be spun-up to millisecond rotational periods. During the accretion stage, the system is called a low-mass X-ray…

Signatures of "evaporative" winds from exo-planets on short (hot) orbits around their host star have been observed in a number of systems. In this paper we present global AMR simulations that track the launching of the winds, their…

Earth and Planetary Astrophysics · Physics 2017-01-18 Jonathan Carroll-Nellenback , Adam Frank , Baowei Liu , Alice C. Quillen , Eric G. Blackman , Ian Dobbs-Dixon

Spider pulsars are compact binary systems composed of a millisecond pulsar and a low-mass companion. The relativistic magnetically-dominated pulsar wind impacts onto the companion, ablating it and slowly consuming its atmosphere. The…

High Energy Astrophysical Phenomena · Physics 2022-07-20 Jorge Cortés , Lorenzo Sironi

The winds from a non-accreting pulsar and a massive star in a binary system collide forming a bow-shaped shock structure. The Coriolis force induced by orbital motion deflects the shocked flows, strongly affecting their dynamics. We study…

High Energy Astrophysical Phenomena · Physics 2015-06-04 V. Bosch-Ramon , M. V. Barkov , D. Khangulyan , M. Perucho

Millisecond pulsars (MSPs) are mainly characterised by their spin periods, B-fields and masses - quantities which are largely affected by previous interactions with a companion star in a binary system. In this paper, we investigate the…

Solar and Stellar Astrophysics · Physics 2012-08-30 Thomas M. Tauris , Norbert Langer , Michael Kramer

Radio pulsars with millisecond spin periods are thought to have been spun up by transfer of matter and angular momentum from a low-mass companion star during an X-ray-emitting phase. The spin periods of the neutron stars in several such…

Binary systems composed of a recycled millisecond pulsar and a stellar companion in close orbit could be excellent sites to diagnose pulsar winds. In such systems, the pulsar outflow irradiates and heats up the companion atmosphere, which…

High Energy Astrophysical Phenomena · Physics 2020-01-08 Anne Zilles , Kumiko Kotera , Rene Rohrmann , Leandro Althaus

Neutron stars in close binary systems have the potential to spin up to millisecond periods due to the accretion of matter and angular momentum from their low-mass companions. In later stages of this process, they sometimes start to swing…

High Energy Astrophysical Phenomena · Physics 2026-05-22 S. V. Karpov , Artyom S. Tanashkin , G. M. Beskin , V. L. Plokhotnichenko , Y. A. Shibanov , D. A. Zyuzin

Spider pulsars are compact binary systems composed of a millisecond pulsar and a low-mass companion. Their X-ray emission - modulated on the orbital period - is interpreted as synchrotron radiation from high-energy electrons accelerated at…

High Energy Astrophysical Phenomena · Physics 2024-04-08 Jorge Cortés , Lorenzo Sironi

A significant amount of the millisecond pulsars has been discovered within binary systems. In several such binary systems the masses of the companion stars have been derived allowing to distinguish two classes of objects, called the Black…

High Energy Astrophysical Phenomena · Physics 2016-02-12 W. Bednarek

To track the formation and evolution links of the millisecond pulsars (MSPs) powered by accretion and rotation in the Galactic field, we investigate the spin period (P) and spin-down power (Edot) distributions of the MSPs observed at the…

High Energy Astrophysical Phenomena · Physics 2019-10-21 De-Hua Wang , Cheng-Min Zhang , Shuang-Qiang Wang

Pulsar winds have been shown to be preferred sites of particle acceleration and high-energy radiation. Numerous studies have been conducted to better characterize the general structure of such relativistic plasmas in isolated systems.…

High Energy Astrophysical Phenomena · Physics 2025-01-06 Valentina Richard-Romei , Benoît Cerutti

Understanding the formation and properties of relativistic jets from accreting compact objects has far-reaching implications in astrophysics. Transitional millisecond pulsars (tMSPs) - a class of neutron stars transitioning between radio…

High Energy Astrophysical Phenomena · Physics 2025-03-28 K. I. I. Koljonen , M. Linares , J. C. A. Miller-Jones

Millisecond pulsars (MSPs) are spun up during their accretion phase in a binary system. The exchange of angular momentum between the accretion disk and the star tends to align the spin and orbital angular momenta on a very short time scale…

High Energy Astrophysical Phenomena · Physics 2026-03-25 Alexandra Lorange , Jérôme Pétri , Mattéo Sautron , Vincent Vigon

Millisecond pulsars (MSPs) are recycled pulsars which have been spun-up due to mass accretion during the phase of mass exchange in binaries. Although the interactions with companion stars play important roles on the spin-up process, the…

High Energy Astrophysical Phenomena · Physics 2025-11-05 Xinyi Zhong , Xiaoyu Lai

Stellar winds shape the evolution of stars through the loss of mass. In binary systems, they also shape the stars' evolution by modifying the orbit. In this paper, we use hydrodynamic simulations to study the emergence of nearly-isothermal…

Solar and Stellar Astrophysics · Physics 2020-10-21 Morgan MacLeod , Abraham Loeb

Context. In binary star systems, the winds from the two components impact each other, leading to strong shocks and regions of enhanced density and temperature. Potentially habitable circumbinary planets must continually be exposed to these…

Solar and Stellar Astrophysics · Physics 2015-05-13 C. P. Johnstone , A. Zhilkin , E. Pilat-Lohinger , D. Bisikalo , M. Güdel , S. Eggl

Millisecond pulsars (MSPs) are observed to emit multi-wavelength radiation, from radio to GeV. Spider MSPs, which interact with their low-mass companion in close orbit (orbital periods $< 1$ day), may lead to strong intrabinary shocks that…

This second paper in our series investigates the evolutionary mechanisms that shape pulsars and millisecond pulsars (MSPs) across different astrophysical environments. We focus on the physical processes that govern spin evolution, magnetic…

High Energy Astrophysical Phenomena · Physics 2026-02-10 Maria Rah , Rainer Spurzem , Francesco Flammini Dotti , Areg Mickaelian

Compact binary millisecond pulsars (also known as spiders) allow us to probe pulsar winds in their innermost regions, between the light cylinder (radius $\sim10^{7}$ cm) and the companion star (at $\sim10^{11}$ cm). Their flux is known to…

High Energy Astrophysical Phenomena · Physics 2026-01-23 Maksat Satybaldiev , Manuel Linares , Vittoria Vecchiotti