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dc.contributor.authorPrinsloo, P.L.
dc.contributor.authorPotgieter, M.S.
dc.contributor.authorStrauss, R.D.
dc.date.accessioned2017-03-16T12:00:03Z
dc.date.available2017-03-16T12:00:03Z
dc.date.issued2017
dc.identifier.citationPrinsloo, P.L. et al. 2017. The re-acceleration of galactic electrons at the heliospheric termination shock. Astrophysical journal, 836(1): Article no 100. [https://doi.org/10.3847/1538-4357/836/1/100]en_US
dc.identifier.issn0004-637X
dc.identifier.issn1538-4357 (Online)
dc.identifier.urihttp://hdl.handle.net/10394/20861
dc.identifier.urihttps://doi.org/10.3847/1538-4357/836/1/100
dc.identifier.urihttp://iopscience.iop.org/article/10.3847/1538-4357/836/1/100
dc.description.abstractObservations by the Voyager spacecraft in the outer heliosphere presented several challenges for the paradigm of diffusive shock acceleration (DSA) at the solar wind termination shock (TS). In this study, the viability of DSA as a re-acceleration mechanism for galactic electrons is investigated using a comprehensive cosmic-ray modulation model. The results demonstrate that the efficiency of DSA depends strongly on the shape of the electron spectra incident at the TS, which in turn depends on the features of the local interstellar spectrum. Modulation processes such as drifts therefore also influence the re-acceleration process. It is found that re-accelerated electrons make appreciable contributions to intensities in the heliosphere and that increases caused by DSA at the TS are comparable to intensity enhancements observed by Voyager 1 ahead of the TS crossing. The modeling results are interpreted as support for DSA as a re-acceleration mechanism for galactic electrons at the TSen_US
dc.language.isoenen_US
dc.publisherIOP Publishingen_US
dc.subjectAcceleration of particlesen_US
dc.subjectCosmic raysen_US
dc.subjectSolar winden_US
dc.subjectSun: heliosphereen_US
dc.titleThe re-acceleration of galactic electrons at the heliospheric termination shocken_US
dc.typeArticleen_US
dc.contributor.researchID13065440 - Strauss, Roelf Du Toit
dc.contributor.researchID10060014 - Potgieter, Marthinus Steenkamp
dc.contributor.researchID21696764 - Prinsloo, Phillip Lourens


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