@article{d60038dc943845b2a3ccba65109dc757,
title = "Kicks and induced spins of neutron stars at birth",
abstract = "Using simulations of non-rotating supernova progenitors, we explore the kicks imparted to and the spins induced in the compact objects birthed in core collapse. We find that the recoil due to neutrino emissions can be a factor affecting core recoil, comparable to and at times larger than the corresponding kick due to matter recoil. This result would necessitate a revision of the general model of the origin of pulsar proper motions. In addition, we find that the sign of the net neutrino momentum can be opposite to the sign of the corresponding matter recoil. As a result, at times the pulsar recoil and ejecta can be in the same direction. Moreover, our results suggest that the duration of the dipole in the neutrino emissions can be shorter than the duration of the radiation of the neutron-star binding energy. This allows a larger dipole asymmetry to arise, but for a shorter time, resulting in kicks in the observed pulsar range. Furthermore, we find that the spin induced by the aspherical accretion of matter can leave the residues of collapse with spin periods comparable to those inferred for radio pulsars and that there seems to be a slight anticorrelation between the direction of the induced spin and the net kick direction. This could explain such a correlation among observed radio pulsars. Finally, we find that the kicks imparted to black holes are due to the neutrino recoil alone, resulting in birth kicks ≤100 km s-1 most of the time.",
keywords = "hydrodynamics, neutrinos, pulsars: general, stars: neutron, supernovae: general, turbulence",
author = "Coleman, {Matthew S.B.} and Adam Burrows",
note = "Funding Information: We thank David Vartanyan, Tianshu Wang, Chris White, David Radice, and Hiroki Nagakura for fruitful discussions and/or past collaborations. We acknowledge support from the U. S. Department of Energy (DOE) Office of Science and the Office of Advanced Sci- entific Computing Research via the Scientific Discovery through Ad- vanced Computing (SciD A C4) program and Grant DE-SC0018297 (subaward 00009650) and support from the U. S. National Science Foundation (NSF) under Grants AST-1714267 and PHY-1804048 (the latter via the Max-Planck/Princeton Center (MPPC) for Plasma Physics). The bulk of the computations presented in this work were performed on Blue Waters under the sustained-petascale computing project, which was supported by the National Science Foundation (awards OCI-0725070 and ACI-1238993) and the state of Illinois. Blue Waters was a joint effort of the University of Illinois at Urbana-Champaign and its National Center for Supercomputing Applica- tions. The two 9 M models were simulated on the Frontera cluster (under awards AST20020 and AST21003), and this research is part of the Frontera computing project at the Texas Advanced Computing Center (Stanzione et al. 2020 ). Frontera is made possible by NSF award OAC-1818253. Additionally, a generous award of computer time was provided by the INCITE program, enabling this research to use resources of the Argonne Leadership Computing Facility, a DOE Office of Science User Facility supported under Contract DE- AC02-06CH11357. Finally, the authors acknowledge computational resources provided by the high-performance computer center at Princeton University, which is jointly supported by the Princeton Institute for Computational Science and Engineering (PICSciE) and the Princeton University Office of Information Technology, and our continuing allocation at the National Energy Research Scientific Computing Center (NERSC), which is supported by the Office of Science of the U. S. Department of Energy under contract DE-AC03- 76SF00098. Publisher Copyright: {\textcopyright} 2022 The Author(s).",
year = "2022",
month = dec,
day = "1",
doi = "10.1093/mnras/stac2573",
language = "English (US)",
volume = "517",
pages = "3938--3961",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "3",
}