Bright gamma-ray flares powered by magnetic reconnection in QED-strength magnetic fields
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10071/17483 |
Resumo: | Strong magnetic fields in the magnetospheres of neutron stars (NSs) (especially magnetars) and other astrophysical objects may release their energy in violent, intense episodes of magnetic reconnection. While reconnection has been studied extensively, the extreme field strength near NSs introduces new effects: radiation cooling and electron–positron pair production. Using massively parallel particle-in-cell simulations that self-consistently incorporate these new radiation and quantum-electrodynamic effects, we investigate relativistic magnetic reconnection in the strong-field regime. We show that reconnection in this regime can efficiently convert magnetic energy to X-ray and gamma-ray radiation and thus power bright, high-energy astrophysical flares. Rapid radiative cooling causes strong plasma and magnetic field compression in compact plasmoids. In the most extreme cases, the field can approach the quantum limit, leading to copious pair production. |
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Bright gamma-ray flares powered by magnetic reconnection in QED-strength magnetic fieldsGamma-ray burst: generalMagnetic fieldsMagnetic reconnectionRadiation mechanisms: GeneralRelativistic processesStars: MagnetarsStrong magnetic fields in the magnetospheres of neutron stars (NSs) (especially magnetars) and other astrophysical objects may release their energy in violent, intense episodes of magnetic reconnection. While reconnection has been studied extensively, the extreme field strength near NSs introduces new effects: radiation cooling and electron–positron pair production. Using massively parallel particle-in-cell simulations that self-consistently incorporate these new radiation and quantum-electrodynamic effects, we investigate relativistic magnetic reconnection in the strong-field regime. We show that reconnection in this regime can efficiently convert magnetic energy to X-ray and gamma-ray radiation and thus power bright, high-energy astrophysical flares. Rapid radiative cooling causes strong plasma and magnetic field compression in compact plasmoids. In the most extreme cases, the field can approach the quantum limit, leading to copious pair production.IOP Publishing Ltd2019-03-06T11:28:28Z2019-01-01T00:00:00Z20192019-03-06T11:17:51Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10071/17483eng0004-637X10.3847/1538-4357/aaf1b9Schoeffler, K. M.Grismayer, T.Uzdensky, D.Fonseca, R. A.Silva, L. O.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-09T17:56:09Zoai:repositorio.iscte-iul.pt:10071/17483Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:28:45.587618Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Bright gamma-ray flares powered by magnetic reconnection in QED-strength magnetic fields |
title |
Bright gamma-ray flares powered by magnetic reconnection in QED-strength magnetic fields |
spellingShingle |
Bright gamma-ray flares powered by magnetic reconnection in QED-strength magnetic fields Schoeffler, K. M. Gamma-ray burst: general Magnetic fields Magnetic reconnection Radiation mechanisms: General Relativistic processes Stars: Magnetars |
title_short |
Bright gamma-ray flares powered by magnetic reconnection in QED-strength magnetic fields |
title_full |
Bright gamma-ray flares powered by magnetic reconnection in QED-strength magnetic fields |
title_fullStr |
Bright gamma-ray flares powered by magnetic reconnection in QED-strength magnetic fields |
title_full_unstemmed |
Bright gamma-ray flares powered by magnetic reconnection in QED-strength magnetic fields |
title_sort |
Bright gamma-ray flares powered by magnetic reconnection in QED-strength magnetic fields |
author |
Schoeffler, K. M. |
author_facet |
Schoeffler, K. M. Grismayer, T. Uzdensky, D. Fonseca, R. A. Silva, L. O. |
author_role |
author |
author2 |
Grismayer, T. Uzdensky, D. Fonseca, R. A. Silva, L. O. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Schoeffler, K. M. Grismayer, T. Uzdensky, D. Fonseca, R. A. Silva, L. O. |
dc.subject.por.fl_str_mv |
Gamma-ray burst: general Magnetic fields Magnetic reconnection Radiation mechanisms: General Relativistic processes Stars: Magnetars |
topic |
Gamma-ray burst: general Magnetic fields Magnetic reconnection Radiation mechanisms: General Relativistic processes Stars: Magnetars |
description |
Strong magnetic fields in the magnetospheres of neutron stars (NSs) (especially magnetars) and other astrophysical objects may release their energy in violent, intense episodes of magnetic reconnection. While reconnection has been studied extensively, the extreme field strength near NSs introduces new effects: radiation cooling and electron–positron pair production. Using massively parallel particle-in-cell simulations that self-consistently incorporate these new radiation and quantum-electrodynamic effects, we investigate relativistic magnetic reconnection in the strong-field regime. We show that reconnection in this regime can efficiently convert magnetic energy to X-ray and gamma-ray radiation and thus power bright, high-energy astrophysical flares. Rapid radiative cooling causes strong plasma and magnetic field compression in compact plasmoids. In the most extreme cases, the field can approach the quantum limit, leading to copious pair production. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-03-06T11:28:28Z 2019-01-01T00:00:00Z 2019 2019-03-06T11:17:51Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10071/17483 |
url |
http://hdl.handle.net/10071/17483 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0004-637X 10.3847/1538-4357/aaf1b9 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
IOP Publishing Ltd |
publisher.none.fl_str_mv |
IOP Publishing Ltd |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799134850416902144 |