Predicting Gravitational Waves from Jittering-jets-driven Core Collapse Supernovae  

作　　者：Noam Soker 

机构地区：[1]Department of Physics,Technion,Haifa,3200003,Israel

出　　处：《Research in Astronomy and Astrophysics》2023年第12期1-6,共6页天文和天体物理学研究（英文版）

基　　金：supported by a grant from the Israel Science Foundation(769/20)。

摘　　要：I estimate the frequencies of gravitational waves from jittering jets that explode core collapse supernovae(CCSNe)to crudely be 5–30 Hz,and with strains that might allow detection of Galactic CCSNe.The jittering jets explosion mechanism(JJEM)asserts that most CCSNe are exploded by jittering jets that the newly born neutron star(NS)launches within a few seconds.According to the JJEM,instabilities in the accreted gas lead to the formation of intermittent accretion disks that launch the jittering jets.Earlier studies that did not include jets calculated the gravitational frequencies that instabilities around the NS emit to have a peak in the crude frequency range of 100–2000Hz.Based on a recent study,I take the source of the gravitational waves of jittering jets to be the turbulent bubbles(cocoons)that the jets inflate as they interact with the outer layers of the core of the star at thousands of kilometers from the NS.The lower frequencies and larger strains than those of gravitational waves from instabilities in CCSNe allow future,and maybe present,detectors to identify the gravitational wave signals of jittering jets.Detection of gravitational waves from local CCSNe might distinguish between the neutrino-driven explosion mechanism and the JJEM.

关 键 词：gravitational waves-stars NEUTRON-STARS black holes-(stars )supernovae general-stars jets 

分 类 号：P145.8[天文地球—天体物理] P142.84[天文地球—天文学]