Search for the Heliosheath with Voyager 1 Magnetic Field Measurements
Abstract
The magnetic field measured by Voyager 1 (V1) near 85 AU from 2002.0 to 2003.17 has the expected properties for the heliospheric magnetic field at that distance and epoch of the solar cycle. The average field magnitude is = 0.04 nT, significantly lower than the value predicted for the heliosheath. The fluctuations in B observed during 2002 are similar to those observed during 2001. The distribution of daily averages of B is lognormal, and the normalized standard deviation SD(B)/ = 0.55 for hourly averages of B, similar to previous heliospheric observations. Changes in the intensity of >70 MeV/n cosmic rays are correlated with changes in B, as has been observed in the heliosphere beyond 11 AU. The V1 magnetic field observations from 2002.0 2003.17 do not provide evidence for exit from the heliosphere, entry into the heliosheath, or transit of the termination shock near 85 AU.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2003
- Bibcode:
- 2003AGUFMSH12B..04B
- Keywords:
-
- 2124 Heliopause and solar wind termination;
- 2134 Interplanetary magnetic fields