The Interstellar Magnetic Field Close to the Sun II
P. C. Frisch, B-G Andersson, A. Berdyugin, V. Piirola, R. DeMajistre,, H. O. Funsten, A. M. Magalhaes, D. B. Seriacopi, D. J. McComas, N. A., Schwadron, J. D. Slavin, S. J. Wiktorowicz

TL;DR
This paper determines the local interstellar magnetic field near the Sun using polarization data, revealing its direction, structure, and relation to galactic features, with implications for heliosphere shape and cosmic ray distribution.
Contribution
It provides new polarization observations and a refined analysis of the local ISMF direction, linking it to the Ribbon of energetic neutral atoms and Loop I superbubble.
Findings
The local ISMF is aligned with the Ribbon center.
The ISMF extends within 8 parsecs of the Sun.
The ISMF shows turbulence of +/-23 degrees.
Abstract
A key indicator of the galactic environment of the Sun is provided by the magnetic field in the interstellar medium (ISM), which influences the shape of the heliosphere. The direction of the nearby interstellar magnetic field (ISMF) is determined from starlight polarized in the ISM. The local ISMF direction is found from the ISMF direction that provides the best fit to the polarization position angles of nearby stars, using weighted fits to the data. New polarization observations are included in the analysis. The best-fitting ISMF is close to the magnetic field direction traced by the center of the Ribbon of energetic neutral atoms, discovered by the Interstellar Boundary Explorer spacecraft. Both the magnetic field and kinematics of the local ISM are consistent with a scenario where the local ISM is a fragment of the Loop I superbubble. An ordered component of the local ISMF is found…
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