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During the final stages of a compact object merger, if at least one of the binary components is a magnetized neutron star (NS), then its orbital motion substantially expands the NS's open magnetic flux -- and hence increases its wind…

高能天体物理现象 · 物理学 2021-01-19 Navin Sridhar , Jonathan Zrake , Brian D. Metzger , Lorenzo Sironi , Dimitrios Giannios

The magnetar magnetosphere is gradually twisted by shearing from footpoint motion, and stored magnetic energy also increases at the same time. When a state exceeds a threshold, flares/outbursts manifest themselves as a result of a…

高能天体物理现象 · 物理学 2018-04-25 Yasufumi Kojima

The magnetosphere of strongly magnetized neutron stars, such as magnetars, can sustain large electric currents. The charged particles return to the surface with large Lorentz factors, producing a particle bombardment. We investigate the…

高能天体物理现象 · 物理学 2018-12-12 Denis Gonzalez-Caniulef , Silvia Zane , Roberto Turolla , Kinwah Wu

Detecting possible electromagnetic precursors to the gravitational signal from merging compact objects is challenging, but it can reveal intricate physical properties of the merging stars through their gravitational and electromagnetic…

高能天体物理现象 · 物理学 2026-04-28 Maxim Lyutikov

The extraordinary energetic activity of magnetars is usually explained in terms of dissipation of a huge internal magnetic field of the order of $10^{15-16}$G. How such a strong magnetic field can originate during the formation of a neutron…

高能天体物理现象 · 物理学 2017-07-26 A. G. Pili , N. Bucciantini , L. Del Zanna

In the late inspiral phase of a double neutron star (NS) or NS-black hole system in which one NS is a magnetar, the tidal force on the magnetar arisen from its companion will increase dramatically as the binary approaches. The tidal-induced…

高能天体物理现象 · 物理学 2022-11-07 Zhen Zhang , Shu-Xu Yi , Shuang-Nan Zhang , Shao-Lin Xiong , Shuo Xiao

We consider topological configurations of the magnetically coupled spinning stellar binaries (e.g., merging neutron stars or interacting star-planet systems). We discuss conditions when the stellar spins and the orbital motion nearly…

高能天体物理现象 · 物理学 2021-12-15 Sergey A. Cherkis , Maxim Lyutikov

Magnetar activity is generated by shear motions of the neutron star surface, which relieve internal magnetic stresses. An analogy with earthquakes and faults is problematic, as the crust is permeated by strong magnetic fields, which greatly…

高能天体物理现象 · 物理学 2015-06-22 Andrei M. Beloborodov , Yuri Levin

Magnetic fields inside and around neutron stars are at the heart of pulsar magnetospheric activity. Strong magnetic fields are responsible for quantum effects, an essential ingredient to produce leptonic pairs and the subsequent broadband…

高能天体物理现象 · 物理学 2017-11-08 Jérôme Pétri

Magnetar flares are highly energetic and rare events in which intense X and {\gamma}-ray emission is released from strongly magnetised neutron stars. The events are also accompanied by mass ejection from the neutron star. Fast radio bursts…

高能天体物理现象 · 物理学 2026-03-18 Konstantinos N. Gourgouliatos

We explore the electromagnetic counterparts that will associate with binary neutron star mergers for the case that remnant massive neutron stars survive for $\gtrsim 0.5\,$s after the merger. For this study, we employ the outflow profiles…

高能天体物理现象 · 物理学 2022-08-31 Kyohei Kawaguchi , Sho Fujibayashi , Kenta Hotokezaka , Masaru Shibata , Shinya Wanajo

We consider the possible existence of a common channel of evolution of binary systems, which results in a gamma-ray burst during the formation of a black hole or the birth of a magnetar during the formation of a neutron star. We assume that…

高能天体物理现象 · 物理学 2010-11-02 A. I. Bogomazov , S. B. Popov

The formation of neutron stars (NSs), both from collapses of massive stars and mergers of compact objects, can be usually indicated by bright transients emitted from explosively-ejected material. In particular, if the newborn NSs can rotate…

高能天体物理现象 · 物理学 2019-09-04 Yun-Wei Yu , Aming Chen , Zi-Gao Dai , Shao-Ze Li , Liang-Duan Liu , Jin-Ping Zhu

Sudden relaxation of the magnetic field in the core of a magnetar produces mechanical energy primarily in the form of shear waves which propagate to the surface and enter the magnetosphere as relativistic Alfv\'en waves. Due to a strong…

太阳与恒星天体物理 · 物理学 2015-06-18 Bennett Link

In the seconds after core collapse and explosion, a thermal neutrino-driven wind emerges from the cooling, deleptonizing newly-born neutron star. If the neutron star has a large-scale magnetar-strength surface magnetic field and millisecond…

天体物理学 · 物理学 2010-11-11 Todd A. Thompson

Gamma-ray bursts resulting from binary neutron-star mergers are sometimes preceded by precursor flares. These harbingers may be ignited by quasi-normal modes, excited by orbital resonances, shattering the stellar crust of one of the…

高能天体物理现象 · 物理学 2023-08-09 Hao-Jui Kuan , Arthur G. Suvorov , Kostas D. Kokkotas

We investigate the emission of rotating magnetized neutron stars due to the acceleration and radiation of particles in the relativistic wind and in the magnetotail of the star. We consider that the charged particles are accelerated by…

天体物理学 · 物理学 2009-11-11 M. M. Romanova , G. A. Chulsky , R. V. E. Lovelace

The phenomenology of the emission of pulsars and magnetars depends dramatically on the structure and properties of their magnetic field. In particular it is believed that the outbursting and flaring activity observed in AXPs and SRGs is…

高能天体物理现象 · 物理学 2016-06-22 N. Bucciantini , A. G. Pili , L. Del Zanna

A newborn, rapidly rotating magnetar may form in a binary neutron star merger and drive a Poynting-flux-dominated relativistic jet. As the jet propagates outward, a forward shock (FS) and a reverse shock (RS) are formed, inflating a pulsar…

高能天体物理现象 · 物理学 2026-05-21 Yun-Peng Li , Da-Bin Lin , Ning-Yuan Zhang , En-Wei Liang

Solar flares are the most powerful, magnetically driven, explosions in the heliosphere. The nature of magnetic energy release in the solar corona that heats the plasma and accelerates particles in a flare, however, remains poorly…