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Anomalously small magnetic field in the local interstellar cloud

Gloeckler, George; Geiss, Johannes; Fisk, L. A.

The solar wind carves out a cavity, known as the heliosphere, in the warm local interstellar cloud, which is itself embedded in a larger hot cloud. It is generally assumed that there is an overall pressure balance between these three regions. Thermal pressure and magnetic field pressure in the local interstellar cloud should therefore balance the …