Repeating fast radio bursts from collapses of the crust of a strange star

Summary: Strange stars (SSs) are compact objects made of deconfined quarks. It is hard to distinguish SSs from neutron stars as a thin crust composed of normal hadronic matter may exist and obscure the whole surface of the SS. Here we suggest that the intriguing repeating fast radio bursts (FRBs) ar...

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Autores principales:	Jinjun Geng, Bing Li, Yongfeng Huang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	accretion compact objects radio bursts degenerate matter low-mass X-ray binary stars Science (General) Q1-390
Acceso en línea:	https://doaj.org/article/826447adc5ce4b07b51fb10baf84ec26
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spelling	oai:doaj.org-article:826447adc5ce4b07b51fb10baf84ec262021-11-28T04:38:56ZRepeating fast radio bursts from collapses of the crust of a strange star2666-675810.1016/j.xinn.2021.100152https://doaj.org/article/826447adc5ce4b07b51fb10baf84ec262021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666675821000771https://doaj.org/toc/2666-6758Summary: Strange stars (SSs) are compact objects made of deconfined quarks. It is hard to distinguish SSs from neutron stars as a thin crust composed of normal hadronic matter may exist and obscure the whole surface of the SS. Here we suggest that the intriguing repeating fast radio bursts (FRBs) are produced by the intermittent fractional collapses of the crust of an SS induced by refilling of materials accreted from its low-mass companion. The periodic/sporadic/clustered temporal behaviors of FRBs could be well understood in our scenario. Especially, the periodicity is attributed to the modulation of accretion rate through the disk instabilities. To account for a ~16-day periodicity of the repeating FRB source of 180916.J0158+65, a Shakura-Sunyaev disk with a viscosity parameter of 0.004 and an accretion rate of 3 × 1016 g s−1 is invoked. Our scenario, if favored by future observations, will serve as indirect evidence for the strange quark matter hypothesis. Public summary: • Strange quark stars are extremely compact objects mainly composed of u, d, and s quarks • Fractional collapse of the crust of a strange quark star can explain the repeating FRB 180916 • Materials accreted from the companion star accumulate at the polar region and trigger the local collapse • The 16-day periodicity of FRB 180916 originates from the thermal-viscous instability of the accretion disk, and the active window corresponds to a high accretion state of the systemJinjun GengBing LiYongfeng HuangElsevierarticleaccretioncompact objectsradio burstsdegenerate matterlow-mass X-ray binary starsScience (General)Q1-390ENThe Innovation, Vol 2, Iss 4, Pp 100152- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	accretion compact objects radio bursts degenerate matter low-mass X-ray binary stars Science (General) Q1-390
spellingShingle	accretion compact objects radio bursts degenerate matter low-mass X-ray binary stars Science (General) Q1-390 Jinjun Geng Bing Li Yongfeng Huang Repeating fast radio bursts from collapses of the crust of a strange star
description	Summary: Strange stars (SSs) are compact objects made of deconfined quarks. It is hard to distinguish SSs from neutron stars as a thin crust composed of normal hadronic matter may exist and obscure the whole surface of the SS. Here we suggest that the intriguing repeating fast radio bursts (FRBs) are produced by the intermittent fractional collapses of the crust of an SS induced by refilling of materials accreted from its low-mass companion. The periodic/sporadic/clustered temporal behaviors of FRBs could be well understood in our scenario. Especially, the periodicity is attributed to the modulation of accretion rate through the disk instabilities. To account for a ~16-day periodicity of the repeating FRB source of 180916.J0158+65, a Shakura-Sunyaev disk with a viscosity parameter of 0.004 and an accretion rate of 3 × 1016 g s−1 is invoked. Our scenario, if favored by future observations, will serve as indirect evidence for the strange quark matter hypothesis. Public summary: • Strange quark stars are extremely compact objects mainly composed of u, d, and s quarks • Fractional collapse of the crust of a strange quark star can explain the repeating FRB 180916 • Materials accreted from the companion star accumulate at the polar region and trigger the local collapse • The 16-day periodicity of FRB 180916 originates from the thermal-viscous instability of the accretion disk, and the active window corresponds to a high accretion state of the system
format	article
author	Jinjun Geng Bing Li Yongfeng Huang
author_facet	Jinjun Geng Bing Li Yongfeng Huang
author_sort	Jinjun Geng
title	Repeating fast radio bursts from collapses of the crust of a strange star
title_short	Repeating fast radio bursts from collapses of the crust of a strange star
title_full	Repeating fast radio bursts from collapses of the crust of a strange star
title_fullStr	Repeating fast radio bursts from collapses of the crust of a strange star
title_full_unstemmed	Repeating fast radio bursts from collapses of the crust of a strange star
title_sort	repeating fast radio bursts from collapses of the crust of a strange star
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/826447adc5ce4b07b51fb10baf84ec26
work_keys_str_mv	AT jinjungeng repeatingfastradioburstsfromcollapsesofthecrustofastrangestar AT bingli repeatingfastradioburstsfromcollapsesofthecrustofastrangestar AT yongfenghuang repeatingfastradioburstsfromcollapsesofthecrustofastrangestar
_version_	1718408270189690880

Repeating fast radio bursts from collapses of the crust of a strange star

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