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Article: Unpulsed high-energy radiation from the Crab pulsar and Nebula

TitleUnpulsed high-energy radiation from the Crab pulsar and Nebula
Authors
KeywordsAcceleration Of Particles
Gamma Rays: Theory
Ism: Individual (Crab Nebula)
Pulsars: Individual (Crab)
Radiation Mechanisms: Nonthermal
Issue Date1994
Citation
Astrophysical Journal, Supplement Series, 1994, v. 90 n. 2, p. 827-831 How to Cite?
AbstractGenerally, people believe that the unpulsed high-energy gamma rays from the direction of Crab Nebula and pulsar comes from the nebula. But it is entirely possible that the unpulsed high-energy gamma rays from the direction of the Crab Nebula and pulsar are actually emitted from a region extending to a couple of light cylinder radii from the pulsar instead of from the extensive nebula. In this conference paper, we study the possibility that the unpulsed high-energy gamma rays from 100 MeV to 10 GeV are emitted from the extensive nebula. In our model, two pulsed photon beams from two different outer gaps cross each other beyond the light cylinder and result in pair production. Since the pitch angles of these pairs do not correlate with the local magnetic field, and the typical mean free path for pair production is comparable to the local radius of curvature, the subsequent synchrotron radiation and inverse-Compton scattering produce unpulsed X-rays and gamma-rays respectively.
Persistent Identifierhttp://hdl.handle.net/10722/174933
ISSN
2015 Impact Factor: 11.257
2015 SCImago Journal Rankings: 6.522

 

DC FieldValueLanguage
dc.contributor.authorCheung, WMen_US
dc.contributor.authorCheng, KSen_US
dc.date.accessioned2012-11-26T08:48:13Z-
dc.date.available2012-11-26T08:48:13Z-
dc.date.issued1994en_US
dc.identifier.citationAstrophysical Journal, Supplement Series, 1994, v. 90 n. 2, p. 827-831en_US
dc.identifier.issn0067-0049en_US
dc.identifier.urihttp://hdl.handle.net/10722/174933-
dc.description.abstractGenerally, people believe that the unpulsed high-energy gamma rays from the direction of Crab Nebula and pulsar comes from the nebula. But it is entirely possible that the unpulsed high-energy gamma rays from the direction of the Crab Nebula and pulsar are actually emitted from a region extending to a couple of light cylinder radii from the pulsar instead of from the extensive nebula. In this conference paper, we study the possibility that the unpulsed high-energy gamma rays from 100 MeV to 10 GeV are emitted from the extensive nebula. In our model, two pulsed photon beams from two different outer gaps cross each other beyond the light cylinder and result in pair production. Since the pitch angles of these pairs do not correlate with the local magnetic field, and the typical mean free path for pair production is comparable to the local radius of curvature, the subsequent synchrotron radiation and inverse-Compton scattering produce unpulsed X-rays and gamma-rays respectively.en_US
dc.languageengen_US
dc.relation.ispartofAstrophysical Journal, Supplement Seriesen_US
dc.subjectAcceleration Of Particlesen_US
dc.subjectGamma Rays: Theoryen_US
dc.subjectIsm: Individual (Crab Nebula)en_US
dc.subjectPulsars: Individual (Crab)en_US
dc.subjectRadiation Mechanisms: Nonthermalen_US
dc.titleUnpulsed high-energy radiation from the Crab pulsar and Nebulaen_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-s2.0-1542568217en_US
dc.identifier.volume90en_US
dc.identifier.issue2en_US
dc.identifier.spage827en_US
dc.identifier.epage831en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridCheung, WM=7202743069en_US
dc.identifier.scopusauthoridCheng, KS=9745798500en_US

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