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Article: Oscillation-induced gamma-ray emission from dead pulsars: A model for the delayed GeV emission in gamma-ray bursts

TitleOscillation-induced gamma-ray emission from dead pulsars: A model for the delayed GeV emission in gamma-ray bursts
Authors
KeywordsGamma-Rays: Bursts
Pulsars: General
Stars: Neutron
Issue Date1997
PublisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/MNR
Citation
Monthly Notices Of The Royal Astronomical Society, 1997, v. 287 n. 3, p. 671-680 How to Cite?
AbstractA sudden release of the internal energy of a neutron star can cause the oscillation of crustal platelets, which will result in a high potential drop between the magnetic field lines. This potential drop accelerates e± pairs in the magnetosphere and results in the emission of high-energy curvature radiation photons with energies of up to a few tens of GeV. We consider the radiation processes that take place in the stellar magnetosphere and compute the energy spectrum of particles escaping the magnetosphere. The oscillation amplitude decreases as the star radiates. Thus, the emission spectrum changes with time. In most of the 'life' of the burst, the escaping photons have energies of up to 10-100 MeV. In the late stage of the emission, photons with energies of 1-100 GeV can escape photon-photon pair creation. The cut-off energies and the time-scales of emission in these two stages depend on the magnetic field, the rotation period and the available strain energy of the neutron star. If some gamma-ray bursts do come from the galactic neutron stars, our model provides an explanation of the spectral features observed. © 1997 RAS.
Persistent Identifierhttp://hdl.handle.net/10722/174867
ISSN
2015 Impact Factor: 4.952
2015 SCImago Journal Rankings: 2.806
References

 

DC FieldValueLanguage
dc.contributor.authorDing, KYen_US
dc.contributor.authorCheng, KSen_US
dc.date.accessioned2012-11-26T08:47:53Z-
dc.date.available2012-11-26T08:47:53Z-
dc.date.issued1997en_US
dc.identifier.citationMonthly Notices Of The Royal Astronomical Society, 1997, v. 287 n. 3, p. 671-680en_US
dc.identifier.issn0035-8711en_US
dc.identifier.urihttp://hdl.handle.net/10722/174867-
dc.description.abstractA sudden release of the internal energy of a neutron star can cause the oscillation of crustal platelets, which will result in a high potential drop between the magnetic field lines. This potential drop accelerates e± pairs in the magnetosphere and results in the emission of high-energy curvature radiation photons with energies of up to a few tens of GeV. We consider the radiation processes that take place in the stellar magnetosphere and compute the energy spectrum of particles escaping the magnetosphere. The oscillation amplitude decreases as the star radiates. Thus, the emission spectrum changes with time. In most of the 'life' of the burst, the escaping photons have energies of up to 10-100 MeV. In the late stage of the emission, photons with energies of 1-100 GeV can escape photon-photon pair creation. The cut-off energies and the time-scales of emission in these two stages depend on the magnetic field, the rotation period and the available strain energy of the neutron star. If some gamma-ray bursts do come from the galactic neutron stars, our model provides an explanation of the spectral features observed. © 1997 RAS.en_US
dc.languageengen_US
dc.publisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/MNRen_US
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen_US
dc.subjectGamma-Rays: Burstsen_US
dc.subjectPulsars: Generalen_US
dc.subjectStars: Neutronen_US
dc.titleOscillation-induced gamma-ray emission from dead pulsars: A model for the delayed GeV emission in gamma-ray burstsen_US
dc.typeArticleen_US
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hken_US
dc.identifier.authorityCheng, KS=rp00675en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0041947853en_US
dc.identifier.hkuros22523-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0041947853&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume287en_US
dc.identifier.issue3en_US
dc.identifier.spage671en_US
dc.identifier.epage680en_US
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridDing, KY=7103197889en_US
dc.identifier.scopusauthoridCheng, KS=9745798500en_US

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