Neutron star kicks affected by standing accretion shock instability for core-collapse supernovae

Wakana Iwakami Nakano*, Kei Kotake, Naofumi Ohnishi, Shoichi Yamada, Keisuke Sawada

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We investigate a proto-neutron star kick velocity estimated from kinetic momentum of a flow around the proto-neutron star after the standing accretion shock instability grows. In this study, ten different types of random perturbations are imposed on the initial flow for each neutrino luminosity. We found that the kick velocities of proto-neutron star are widely distributed from 40 km s -1 to 180 km s -1 when the shock wave reaches 2000 km away from the center of the star. The average value of kick velocity is 115 km s -1, whose value is smaller than the observational ones. The kick velocities do not depend on the neutrino luminosity.

Original languageEnglish
Title of host publicationDeath of Massive Stars
Subtitle of host publicationSupernovae and Gamma-Ray Bursts
EditorsPeter W. A. San Antonio, Nobuyuki Kawai, Elena Pian
Number of pages2
Publication statusPublished - 2011 Apr

Publication series

NameProceedings of the International Astronomical Union
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221


  • hydrodynamics
  • instabilities.
  • shock waves
  • supernovae

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science


Dive into the research topics of 'Neutron star kicks affected by standing accretion shock instability for core-collapse supernovae'. Together they form a unique fingerprint.

Cite this