Multi-spacecraft Study of the 8 November 2000 SEP Event: Electron Injection Histories 100° Apart
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We present the analysis of a large solar near-relativistic electron event observed by the Ulysses and the ACE spacecraft on 8 November 2000, when Ulysses was located at a heliocentric distance of 2.4 AU and at a heliographic latitude of ∼80° S. We use a particle propagation model to infer the local interplanetary transport conditions and the injection histories of the near-relativistic electrons observed by both spacecraft. We find different local transport conditions for each set of observations. The inferred injection profiles for both spacecraft extend for several hours; but the injection at Ulysses was smaller and started later. The association with type II radio emission suggests that the heliospheric electrons were provided by coronal shock acceleration. An analysis of the in situ magnetic field and plasma measurements indicates that the global configuration of the heliosphere (disturbed by transient structures) could play a role in shaping the characteristics of solar energetic particle events observed from different locations.
KeywordsSun: particle emission Sun: interplanetary transport Sun: flares Sun: coronal mass ejections (CMEs)
The research leading to these results has received funding from the European Union’s Seventh Framework Programme (FP7/2007-2013) under grant agreement n∘ 262773 (SEPServer). Computational support was provided by the Centre de Serveis Científics i Acadèmics de Catalunya (CESCA). NA and BS were partially supported by the Ministerio de Ciencia y Tecnología (Spain), under the project AYA2010-17286. NA and BS acknowledge support by the COST Action ES0803 “Developing space weather products and services in Europe.” DL acknowledges support from NSF under SHINE research grant ATM-0648181 and NASA under grants NNX09AG30G and NNX11A083G. VO acknowledges support from CONACyT and an FP7 Marie Curie Reintegration Grant (FP7-PEOPLE-2010-RG/268288). The work by EK was funded by Academy of Finland project 130298.
- Agueda, N.: 2008, PhD thesis, University of Barcelona, Spain. http://www.tdx.cat/handle/10803/749.
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