Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..858..329c&link_type=abstract
PHYSICS OF THE INNER HELIOSHEATH: Voyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics
Astronomy and Astrophysics
Astrophysics
1
Heliosphere/Interstellar Medium Interactions, Radio, Microwave
Scientific paper
The local interstellar magnetic field Bism is constrained by combining convected-field calculations of magnetic draping over the heliopause with a recent theory for the 2-3 kHz radiation observed in the outer heliosphere. The two independent constraints considered involve priming of the outer heliosheath with a fast electron tail, produced by lower hybrid waves excited by pickup ions. Both yield lower limits of order 0.03 - 0.04 nT for Bism, not inconsistent with previous estimates. This implies that the priming process should proceed in the outer heliosheath and the theory is viable. While draping can produce a band-like radiation source, Bism must be highly oblique to the flow and the priming process marginal. Plausibly another idea for the source shape is needed.
Cairns Iver H.
Mitchell Jeffrey J.
Pogorelov Nikolai
Zank Gary P.
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