Acceleration of solar energetic particles by the shock of interplanetary coronal mass ejection

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dc.contributor.author Mondal, Shanwlee Sow
dc.contributor.author Sarkar, Aveek
dc.contributor.author Vaidya, Bhargav
dc.contributor.author Mignone, Andrea,
dc.coverage.spatial United Kingdom
dc.date.accessioned 2022-01-07T05:41:18Z
dc.date.available 2022-01-07T05:41:18Z
dc.date.issued 2021-12
dc.identifier.citation Mondal, Shanwlee Sow; Sarkar, Aveek; Vaidya, Bhargav and Mignone, Andrea, “Acceleration of solar energetic particles by the shock of interplanetary coronal mass ejection”, The Astrophysical Journal, DOI: 10.3847/1538-4357/ac2c7a, vol. 923, no. 1, Dec. 2021. en_US
dc.identifier.issn 1538-4357
dc.identifier.uri https://doi.org/10.1016/j.jmapro.2021.11.064
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/7382
dc.description.abstract Interplanetary coronal mass ejection (ICME) shocks are known to accelerate particles and contribute significantly to solar energetic particle events. We have performed magnetohydrodynamic-particle in cell simulations of ICME shocks to understand the acceleration mechanism. These shocks vary in Alfvénic Mach numbers as well as in magnetic field orientations (parallel and quasi-perpendicular). We find that diffusive shock acceleration plays a significant role in accelerating particles in a parallel ICME shock. In contrast, shock drift acceleration (SDA) plays a pivotal role in a quasi-perpendicular shock. High-Mach shocks are seen to accelerate particles more efficiently. Our simulations suggest that background turbulence and local particle velocity distribution around the shock can indirectly hint at the acceleration mechanism. Our results also point toward a few possible in situ observations that could validate our understanding of the topic.
dc.description.statementofresponsibility by Shanwlee Sow Mondal, Aveek Sarkar, Bhargav Vaidya and Andrea Mignone
dc.format.extent vol. 923, no. 1
dc.language.iso en_US en_US
dc.publisher IOP Publishing en_US
dc.subject Solar coronal mass ejections en_US
dc.subject Solar energetic particles en_US
dc.title Acceleration of solar energetic particles by the shock of interplanetary coronal mass ejection en_US
dc.type Article en_US
dc.relation.journal The Astrophysical Journal


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