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Solar Energetic Particle Event Associated with the 2012 July 23 Extreme Solar Storm View all abstracts by submitter

Bei Zhu   Submitted: 2022-10-23 07:39

We study the solar energetic particle (SEP) event associated with the 2012 July 23 extreme solar storm, for which STEREO and the spacecraft at L1 provide multi-point remote sensing and in situ observations. The extreme solar storm, with a superfast shock and extremely enhanced ejecta magnetic fields observed near 1 AU at STEREO A, was caused by the combination of successive coronal mass ejections (CMEs). Meanwhile, energetic particles were observed by STEREO and near-Earth spacecraft such as ACE and SOHO, suggestive of a wide longitudinal spread of the particles at 1 AU. Combining the SEP observations with in situ plasma and magnetic field measurements we investigate the longitudinal distribution of the SEP event in connection with the associated shock and CMEs. Our results underscore the complex magnetic configuration of the inner heliosphere formed by solar eruptions. The examinations of particle intensities, proton anisotropy distributions, element abundance ratios, magnetic connectivity and spectra also give important clues for the particle acceleration, transport and distribution.

Authors: Bei Zhu; Ying D. Liu; Janet G. Luhmann; Huidong Hu; Rui Wang; Zhongwei Yang
Projects: ACE,GONG,SO/EPD,Wind

Publication Status: The Astrophysical Journal, 827:146 (8pp), 2016 August 20
Last Modified: 2022-10-26 16:02
Go to main E-Print page  On the specific energy and pressure in near-Earth magnetic clouds  Investigation of Energetic Particle Release Using Multi-point Imaging and In Situ Observations  Edit Entry  Download Preprint  Delete Entry 

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