SH51D-05
The Magnetic Vectors B, H and M: has Voyager 1 Crossed the Heliopause?
Friday, 18 December 2015: 09:00
2011 (Moscone West)
Jack R Jokipii, University of Arizona, Tucson, AZ, United States
Abstract:
The question of whether or not Voyager 1 has crossed the heliopause boundary into interstellar space is important. Many have concluded that the Voyager 1 measurement of the local electron density (some 08/cm3, which is close to that expected for the local interstellar medium, and which is many times the density of the heliosheath plasma (some .001/cm3) establishes that Voyager 1 is in interstellar space. However, some believe that these facts are also consistent with Voyager still being inside of the heliopause. In order to understand the high electron density, large compression of the heliosheath plasma is invoked. This compression is attributed to the escape of the superthermal particles with their large pressure. Important to this alternate scenario is the distinction between the magnetic induction B, magnetic intensity H and magnetization M in the heliosheath plasma. I will analyze the physics of this process and compare the results of the analysis with Voyager 1 observations.