Abstract
The most recent Voyager 1 observations show rapidly increasing galactic cosmic ray fluxes with simultaneously decreasing anomalous cosmic ray fluxes. While this has been suggested to somehow herald the imminent crossing of the heliopause, which bounds the heliosphere, we show that such observations should naturally arise from the heliosphere's global magnetic topology. For a blunt termination shock, there must be a region of magnetic flux, still inside the heliopause, but beyond the last magnetic connection point to the termination shock, with poorer access for the shock-accelerated anomalous cosmic rays and better access for the galactic cosmic rays entering the heliosphere.
Original language | English (US) |
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Article number | 19 |
Journal | Astrophysical Journal |
Volume | 758 |
Issue number | 1 |
DOIs | |
State | Published - Oct 10 2012 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science
Keywords
- ISM: general
- ISM: magnetic fields
- Sun: heliosphere
- cosmic rays
- local interstellar matter