Characterizing the Gravitational Wave Signal from Core-collapse Supernovae

被引：144

作者：

Radice, David ^{[1
,2
]}

Morozova, Viktoriya ^{[2
]}

Burrows, Adam ^{[2
]}

Vartanyan, David ^{[2
]}

Nagakura, Hiroki ^{[2
]}

机构：

[1] Inst Adv Study, 1 Einstein Dr, Princeton, NJ 08540 USA

[2] Dept Astrophys Sci, Princeton, NJ 08544 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2019年 / 876卷 / 01期

关键词：

gravitational waves; supernovae: general; ACCRETION SHOCK; SIMULATIONS; NEUTRINO; HYDRODYNAMICS; CONVECTION; SIGNATURES; MECHANISM; RADIATION; MODELS; IMPACT;

D O I：

10.3847/2041-8213/ab191a

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the gravitational wave (GW) signal from eight new 3D core-collapse supernova simulations. We show that the signal is dominated by f- and g-mode oscillations of the protoneutron star (PNS) and its frequency evolution encodes the contraction rate of the latter, which, in turn, is known to depend on the star's mass, on the equation of state, and on transport properties in warm nuclear matter. A lower-frequency component of the signal, associated with the standing accretion shock instability, is found in only one of our models. Finally, we show that the energy radiated in GWs is proportional to the amount of turbulent energy accreted by the PNS.

引用

页数：6

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