2019
DOI: 10.1093/mnras/stz2323
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Diagnosing cosmic ray modified shocks with H α polarimetry

Abstract: A novel diagnostic of cosmic-ray modified shocks by polarimetry of H α emissions is suggested. In a cosmic-ray modified shock, the pressure of cosmic rays is sufficiently high compared to the upstream ram pressure to force the background plasma to decelerate (measured in the shock rest frame). Simultaneously, a fraction of the hydrogen atoms co-existing in the upstream plasma collide with the decelerated protons and undergo charge-exchange reactions. As a result, hydrogen atoms with the same bulk velocity of t… Show more

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Cited by 2 publications
(1 citation statement)
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“…The excitation of levels in the hydrogen atom is considered up to 4f. To evaluate the Stokes of H , we consider the polarization in the Rayleigh scattering regime, following [5] and [3] (see, [12] for details).…”
Section: Modelmentioning
confidence: 99%
“…The excitation of levels in the hydrogen atom is considered up to 4f. To evaluate the Stokes of H , we consider the polarization in the Rayleigh scattering regime, following [5] and [3] (see, [12] for details).…”
Section: Modelmentioning
confidence: 99%