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dc.contributor.authorBüsching, I.
dc.contributor.authorVenter, C.
dc.contributor.authorDe Jager, O.C.
dc.date.accessioned2009-08-17T13:48:15Z
dc.date.available2009-08-17T13:48:15Z
dc.date.issued2008
dc.identifier.citationBüsching, I. et al. 2008. Contributions from nearby pulsars to the local cosmic ray electron spectrum. Advances in space research, 42(3):497-503. [https://doi.org/10.1016/j.asr.2007.08.005]en
dc.identifier.issn0273-1177
dc.identifier.urihttp://hdl.handle.net/10394/2144
dc.identifier.urihttps://doi.org/10.1016/j.asr.2007.08.005
dc.description.abstractPSR J0437-4715 is one of the closest millisecond pulsars (MSPs) to Earth, lying at a distance of ∼140 pc. This pulsar has a characteristic age of 4.9 Gyr and a relatively low spindown power of ∼1034 ergs/s. During its rather long lifetime, a large fraction of the energy output has been in the form of multi-TeV electrons. In this paper, we investigate the possible contribution of this nearby MSP to the local interstellar electron spectrum (LIS). The old age of the system justifies a steady-state evaluation of the contribution from this pulsar to the LIS. We calculate the electron spectrum at the light cylinder in the framework of a General Relativistic polar cap (PC) model, and use this as an injection spectrum in a diffusion model. The younger Geminga pulsar is also very close to Earth and warrants investigation. A steady-state approach is however no longer justified, so we use an impulsive injection model. We will present results of a study of the contribution from these pulsars to the cosmic ray (CR) LIS. Our calculations show that pulsars like Geminga can make a non-negligible contribution to the LIS
dc.language.isoenen
dc.publisherElsevieren
dc.subjectMillisecond pulsar
dc.subjectCosmic ray electrons
dc.subjectGeminga
dc.subjectPSR J0437-4715
dc.subjectLocal interstellar spectrum
dc.titleContributions from nearby pulsars to the local cosmic ray electron spectrumen
dc.typeArticleen
dc.contributor.researchID13235176 - Büsching, Ingo
dc.contributor.researchID10065857 - De Jager, Ocker Cornelis
dc.contributor.researchID12006653 - Venter, Christo


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