30TH INTERNATIONAL COSMIC RAY CONFERENCE Possible role of transients on the energy spectra of energetic particles at the solar wind termination shock
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چکیده
We suggest that a series of merged interaction regions interacted with the solar wind termination shock for several years prior to its crossing by Voyager 1 in December 2004 and created the observed spectral shape of energetic particles. We also find that the charge-state of He with 3 to 70 MeV/nuc and O with 1 to 14 MeV/nuc is +1 and that the rigidity dependence of the diffusion coefficient from 170 MV to 2.7 GV is given by .
منابع مشابه
30TH INTERNATIONAL COSMIC RAY CONFERENCE Voyager observations of energetic particles near the solar wind termination shock
Voyager 1 is observing the energy spectra of anomalous cosmic ray H, He, and O in the heliosheath. The relative abundance of H/He is 20 at 1-1.5 MeV/nuc, indicating that H pickup ions are more efficiently accelerated than was modeled from observations at higher energies. Voyager 2 began observing upstream energetic ions from the shock in late 2004 at ∼75 AU, about 10 AU closer to the Sun than o...
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تاریخ انتشار 2015