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| Paper: |
Large-scale Interstellar Structure and the Heliosphere |
| Volume: |
484, Outstanding Problems in Heliophysics: From Coronal Heating to the Edge of the Heliosphere |
| Page: |
42 |
| Authors: |
Frisch, P. C.; Schwadron, N. A. |
| Abstract: |
The properties of interstellar clouds near the Sun are ordered by the
Loop I superbubble and by the interstellar radiation field.
Comparisons of the kinematics and magnetic field of the interstellar
gas flowing past the Sun, including the Local Interstellar Cloud
(LIC), indicate a geometric relation between Loop I as defined by
radio synchrotron emission, and the interstellar magnetic field that
polarizes nearby starlight. Depletion of Fe and Mg onto dust grains
in the LIC shows a surprising relation to the far ultraviolet
interstellar radiation field that is best explained by a scenario for
the LIC to be extended, possibly filamentary, porous material drifting
through space with the Loop I superbubble. The interstellar velocity
and magnetic field measured by the Interstellar Boundary Explorer
(IBEX) help anchor our understanding of the physical properties of the
nearby interstellar medium. |
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