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Article: Consequences of Energetic Magnetar-like Outbursts of Nearby Neutron Stars: 14C Events and the Cosmic Electron Spectrum

TitleConsequences of Energetic Magnetar-like Outbursts of Nearby Neutron Stars: 14C Events and the Cosmic Electron Spectrum
Authors
KeywordsMagnetars
Neutron stars
Central compact
Issue Date2019
PublisherAmerican Astronomical Society, co-published with Institute of Physics Publishing, Inc. The Journal's web site is located at http://iopscience.iop.org/0004-637X/
Citation
The Astrophysical Journal, 2019, v. 887 n. 2, p. 202:1-202:9 How to Cite?
AbstractFour significant events of rapid 14C increase have taken place within the past several thousand years. The physical origin of these rapid increases is still a mystery but must be associated with extremely energetic cosmic processes. Pulsars are highly magnetized neutron stars that emit a beam of electromagnetic radiations. Any sudden release of the energy stored in the magnetic multipole field will trigger outbursts similar to the giant flares of magnetars. Here we show that the relativistic outflow from the outbursts of a nearby pulsar interacting with the interstellar medium generates a shock, which accelerates electrons to trillions of electron volts. The high-energy photons from synchrotron emission of the shock interact with Earth's atmosphere, producing the cosmogenic nuclide 14C, which can cause the rapid 14C increases discovered in tree rings. These same relativistic electrons can account for a significant fraction of the cosmic electron spectrum in the trillion electron volts energy range, as observed by space-borne satellites. Since these outburst events can significantly affect our environment, monitoring nearby pulsars for such outbursts may be important in the future.
Persistent Identifierhttp://hdl.handle.net/10722/280973
ISSN
2019 Impact Factor: 5.745
2015 SCImago Journal Rankings: 3.266

 

DC FieldValueLanguage
dc.contributor.authorWang, FY-
dc.contributor.authorLi, X-Y-
dc.contributor.authorChernyshov, DO-
dc.contributor.authorHui, CY-
dc.contributor.authorZhang, GQ-
dc.contributor.authorCheng, KS-
dc.date.accessioned2020-02-25T07:43:28Z-
dc.date.available2020-02-25T07:43:28Z-
dc.date.issued2019-
dc.identifier.citationThe Astrophysical Journal, 2019, v. 887 n. 2, p. 202:1-202:9-
dc.identifier.issn0004-637X-
dc.identifier.urihttp://hdl.handle.net/10722/280973-
dc.description.abstractFour significant events of rapid 14C increase have taken place within the past several thousand years. The physical origin of these rapid increases is still a mystery but must be associated with extremely energetic cosmic processes. Pulsars are highly magnetized neutron stars that emit a beam of electromagnetic radiations. Any sudden release of the energy stored in the magnetic multipole field will trigger outbursts similar to the giant flares of magnetars. Here we show that the relativistic outflow from the outbursts of a nearby pulsar interacting with the interstellar medium generates a shock, which accelerates electrons to trillions of electron volts. The high-energy photons from synchrotron emission of the shock interact with Earth's atmosphere, producing the cosmogenic nuclide 14C, which can cause the rapid 14C increases discovered in tree rings. These same relativistic electrons can account for a significant fraction of the cosmic electron spectrum in the trillion electron volts energy range, as observed by space-borne satellites. Since these outburst events can significantly affect our environment, monitoring nearby pulsars for such outbursts may be important in the future.-
dc.languageeng-
dc.publisherAmerican Astronomical Society, co-published with Institute of Physics Publishing, Inc. The Journal's web site is located at http://iopscience.iop.org/0004-637X/-
dc.relation.ispartofThe Astrophysical Journal-
dc.rightsThe Astrophysical Journal. Copyright © American Astronomical Society, co-published with Institute of Physics Publishing, Inc.-
dc.subjectMagnetars-
dc.subjectNeutron stars-
dc.subjectCentral compact-
dc.titleConsequences of Energetic Magnetar-like Outbursts of Nearby Neutron Stars: 14C Events and the Cosmic Electron Spectrum-
dc.typeArticle-
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hk-
dc.identifier.authorityCheng, KS=rp00675-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.3847/1538-4357/ab55db-
dc.identifier.scopuseid_2-s2.0-85077329189-
dc.identifier.hkuros309190-
dc.identifier.volume887-
dc.identifier.issue2-
dc.identifier.spage202:1-
dc.identifier.epage202:9-
dc.publisher.placeUnited States-

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