A Necessary Condition for Supernova Fallback Invading Newborn Neutron-star Magnetosphere

Yici Zhong, Kazumi Kashiyama, Toshikazu Shigeyama, Shinsuke Takasao

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

We numerically investigate the dynamics of a supernova fallback accretion confronting with a relativistic wind from a newborn neutron star (NS). The time evolution of the accretion shock in the radial direction is basically characterized by the encounter radius of the flow r enc and a dimensionless parameter, where L is the NS wind luminosity and is the fallback mass accretion rate. We find that the critical condition for the fallback matter to reach near the NS surface can be simply described as or independent of the wind Lorentz factor, where M ∗ is the NS mass. With combining the condition for the fallback matter to bury the surface magnetic field under the NS crust, we discuss the possibility that the trifurcation of NSs into rotation-powered pulsars, central compact objects, and magnetars can be induced by supernova fallback.

Original languageEnglish
Article number71
JournalAstrophysical Journal
Volume917
Issue number2
DOIs
Publication statusPublished - 2021 Aug 20

Fingerprint

Dive into the research topics of 'A Necessary Condition for Supernova Fallback Invading Newborn Neutron-star Magnetosphere'. Together they form a unique fingerprint.

Cite this