Quark novae: An alternative channel for the formation of isolated millisecond pulsars

Nurimangul Nurmamat, Chunhua Zhu, Guoliang Lü, Zhaojun Wang, Lin Li, Helei Liu
2019 Journal of astrophysics and astronomy  
Isolated millisecond pulsars (IMSPs) are a topic of academic contention. There are various models to explain their formation. We explore the formation of IMSP via quark novae (QN). During this formation process, low-mass X-ray binaries (LMXBs) are disrupted when the mass of the neutron star (NS) reaches 1.8 M_. Using population synthesis, this work estimates that the Galactic birthrate of QN-produced IMSPs lies between ∼ 9.5×10^-6 and ∼1.7×10^-4yr^-1. The uncertainties shown in our experiment
more » ... del is due to the QN's kick velocity. Furthermore, our findings not only show that QN-produced IMSPs are statistically more significant than those produced by mergers, but also that millisecond pulsar binaries with a high eccentricity may originate from LMXBs that have been involved in, yet not disrupted by, a QN.
doi:10.1007/s12036-019-9596-z fatcat:oxpgfgvk6zcphin5q55xwwnkse