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It is no longer necessary to `sell' the idea of pulsar kicks, the notion that neutron stars receive a large velocity (a few hundred to a thousand km s$^{-1}$) at birth. However, the origin of the kicks remains mysterious. We review the…

天体物理学 · 物理学 2016-01-27 Dong Lai

We propose a simple model to explain the velocity of young neutron stars. We attempt to confirm a relationship between the amount of mass ejected in the formation of the neutron star and the `kick' velocity imparted to the compact remnant…

高能天体物理现象 · 物理学 2016-06-01 J. C. Bray , J. J. Eldridge

The effect of kick velocity to newly born pulsars on the distribution of $\gamma$-ray bursters is examined in the context of a disk origin model and a halo model of $\gamma$-ray bursters. The conversion formula from a 2-dimensional velocity…

天体物理学 · 物理学 2011-05-23 Nobuo Terasawa , Makoto Hattori

Double neutron stars (DNSs), binary systems consisting of a radio pulsar and a generally undetected second neutron star (NS), have proven to be excellent laboratories for testing the theory of general relativity. The seven systems…

天体物理学 · 物理学 2009-11-13 J D M Dewi , Ph Podsiadlowski , O R Pols

In Bray and Eldridge (2017), we proposed a simple neutron star kick formula, v kick = alpha (M ejecta / M remnant) + beta to explain the observed 2D velocities of young single neutron stars. Using this kick we found that there is no…

太阳与恒星天体物理 · 物理学 2018-08-22 J. C. Bray , J. J. Eldridge

Based on the observed high velocity of pulsars it is thought that neutron stars (NSs) receive a significant velocity kick at birth. Such natal kicks are considered to play an important role in the the evolution of binary-NS systems. The…

高能天体物理现象 · 物理学 2016-10-04 Erez Michaely , Dimitry Ginzburg , Hagai B. Perets

Recently it has become apparent that the Galactic center excess (GCE) is spatially correlated with the stellar distribution in the Galactic bulge. This has given extra motivation for the unresolved population of millisecond pulsars (MSPs)…

高能天体物理现象 · 物理学 2021-10-14 Harrison Ploeg , Chris Gordon

Evidence from pulsar wind nebula symmetry axes and radio polarization observations suggests that pulsar motions correlate with the spin directions. We assemble this evidence for young isolated pulsars and show how it can be used to…

天体物理学 · 物理学 2011-02-11 C. -Y. Ng , Roger W. Romani

The majority of massive stars are born in binaries, and most unbind upon the first supernova. With precise proper motion surveys such as Gaia, it is possible to trace back the motion of stars in the vicinity of young remnants to search for…

高能天体物理现象 · 物理学 2023-04-19 A. A. Chrimes , A. J. Levan , J. J. Eldridge , M. Fraser , N. Gaspari , P. J. Groot , J. D. Lyman , G. Nelemans , E. R. Stanway , K. Wiersema

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

Natal supernova kicks, the linear momentum compact remnants receive during their formation, are an essential part of binary population synthesis (BPS) models. Although these kicks are well-supported by evidence, their underlying…

高能天体物理现象 · 物理学 2023-05-10 S. M. Richards , J. J. Eldridge , M. M. Briel , H. F. Stevance , R. Willcox

Neutron stars (NSs) are observed with high space velocities and elliptical orbits in binaries. The magnitude of these effects points to natal kicks that originate from asymmetries during the supernova (SN) explosions. Using a growing set of…

高能天体物理现象 · 物理学 2024-08-12 H. -Thomas Janka , Daniel Kresse

We take a fresh look at the determination of distances and velocities of neutron stars. The conversion of a parallax measurement into a distance, or distance probability distribution, has led to a debate quite similar to the one involving…

高能天体物理现象 · 物理学 2017-09-27 Frank Verbunt , Eric Cator

We explore the possibility of inferring the properties of the Galactic neutron star population through machine learning. In particular, in this paper we focus on their dynamical characteristics and show that an artificial neural network is…

高能天体物理现象 · 物理学 2021-08-11 Michele Ronchi , Vanessa Graber , Alberto Garcia-Garcia , Jose A. Pons , Nanda Rea

Using three-dimensional (3D) simulations of neutrino-powered supernova explosions we show that the hydrodynamical kick scenario proposed by Scheck et al. on the basis of two-dimensional (2D) models can yield large neutron star (NS) recoil…

高能天体物理现象 · 物理学 2010-11-25 A. Wongwathanarat , H. -Th. Janka , E. Mueller

The birth properties of neutron stars yield important information on the still debated physical processes that trigger the explosion and on intrinsic neutron-star physics. These properties include the high space velocities of young neutron…

Due to the large kick velocities with which neutron stars are born in supernovae explosions, their spatial distribution is more extended than that of their progenitor stars. The large scale height of the neutron stars above the disk plane…

天体物理学 · 物理学 2009-10-28 Silvia Mollerach , Esteban Roulet

Neutron stars receive velocity kicks at birth in supernovae. Those formed in electron-capture supernovae from super asymptotic giant branch stars -- the lowest mass stars to end their lives in supernovae -- may receive significantly lower…

高能天体物理现象 · 物理学 2022-05-25 Simon Stevenson , Reinhold Willcox , Alejandro Vigna-Gomez , Floor Broekgaarden

Asymmetric mass ejection in the early phase of supernova (SN) explosions can impart a kick velocity to the new-born neutron star (NS). For neutrino-driven explosions the NS acceleration was shown to be mainly caused by the gravitational…

高能天体物理现象 · 物理学 2017-03-15 H. -Th. Janka

We study implications for the apparent alignment of the spin axes, proper-motions, and polarization vectors of the Crab and Vela pulsars. The spin axes are deduced from recent Chandra X-ray Observatory images that reveal jets and nebular…

天体物理学 · 物理学 2009-10-31 Dong Lai , David F. Chernoff , James M. Cordes