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2021

Quantitative assessment of protons during the solar proton events of September 2017

Abstract We present multi-spacecraft observations of the proton fluxes spanning from 1.5-433 MeV for the largest solar proton event of solar cycle 24, i.e. 7 and 10 September 2017. In September 2017, M5.5 flare on 4 September, X9.3 flare on 6 September and X8.2 flare on 10 September gave rise to solar proton event when observed by near-Earth spacecrafts. On 7 September and 10 September 2017, a strong enhancement in the proton intensities was observed by ACE and WIND at L1 and Van Allen Probes, GOES-15 and POES-19 in the Eart ...

Pandya, Megha; Veenadhari, B.;

YEAR: 2021     DOI: https://doi.org/10.1029/2021JA029458

innermagnetosphere; SEP event; Radiation belt; Proton flux; Van Allen Probes

2019

Variation of Radiation belt electron flux during CME and CIR driven geomagnetic storms: Van Allen Probes observations

Relativistic electron flux responses in the inner magnetosphere are investigated for 28 magnetic storms driven by Corotating Interaction Region (CIR) and 27 magnetic storms driven by Coronal Mass Ejection (CME), using data from the Relativistic Electron-Proton Telescope (REPT) instrument on board Van-Allen Probes from Oct-2012 to May-2017. In this present study we analyze the role of CIRs and CMEs in electron dynamics by sorting the electron fluxes in terms of averaged solar wind parameters, L-values, and energies. The major ...

Pandya, Megha; Veenadhari, B.; Ebihara, Y.; Kanekal, S.G.; Baker, D.N.;

YEAR: 2019     DOI: 10.1029/2019JA026771

electron flux; innermagnetosphere; Magnetic Storms; Radiation belt; solar wind driver; Van Allen Probes



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