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arXiv · 1610.07544

Magnetic flux density from the relative circular motion of stars and partially ionized gas in the Galaxy mid-plane vicinity

Joanna Jałocha·Łukasz Bratek·Jan Pękala·Szymon Sikora·Marek Kutschera
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Abstract

Observations suggest a slower stellar rotation relative to gas rotation in the outer part of the Milky Way Galaxy. This difference could be attributed to an interaction with the interstellar magnetic field. In a simple model, fields of order 10 micro Gauss are then required, consistently with the observed values. This coincidence suggests a tool for estimating magnetic fields in spiral galaxies. A North-South asymmetry in the rotation of gas in the Galaxy could be of magnetic origin too.

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Joanna Jałocha, Łukasz Bratek, Jan Pękala, Szymon Sikora, Marek Kutschera. 2016-10-24. Magnetic flux density from the relative circular motion of stars and partially ionized gas in the Galaxy mid-plane vicinity. https://doi.org/10.3847/1538-4357%2F833%2F2%2F174

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