The solar energetic particle event on 2013 April 11: an investigation of its solar origin and longitudinal spread

Lario, D.; Raouafi, N. E.; Kwon, R. -Y.; Zhang, J.; Gómez-Herrero, R.; Dresing, N.; Riley, P.

doi:10.1088/0004-637X/797/1/8

Title: The solar energetic particle event on 2013 April 11: an investigation of its solar origin and longitudinal spread

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Abstract

We investigate the solar phenomena associated with the origin of the solar energetic particle (SEP) event observed on 2013 April 11 by a number of spacecraft distributed in the inner heliosphere over a broad range of heliolongitudes. We use extreme ultraviolet (EUV) and white-light coronagraph observations from the Solar Dynamics Observatory (SDO), the SOlar and Heliospheric Observatory, and the twin Solar TErrestrial RElations Observatory spacecraft (STEREO-A and STEREO-B) to determine the angular extent of the EUV wave and coronal mass ejection (CME) associated with the origin of the SEP event. We compare the estimated release time of SEPs observed at each spacecraft with the arrival time of the structures associated with the CME at the footpoints of the field lines connecting each spacecraft with the Sun. Whereas the arrival of the EUV wave and CME-driven shock at the footpoint of STEREO-B is consistent, within uncertainties, with the release time of the particles observed by this spacecraft, the EUV wave never reached the footpoint of the field lines connecting near-Earth observers with the Sun, even though an intense SEP event was observed there. We show that the west flank of the CME-driven shock propagating at high altitudes above the solar surfacemore »« less

Authors:

Lario, D.; Raouafi, N. E. ^[1]; Kwon, R. -Y.; Zhang, J. ^[2]; Gómez-Herrero, R. ^[3]; Dresing, N. ^[4]; Riley, P. ^[5]

The Johns Hopkins University, Applied Physics Laboratory, Laurel, MD 20723 (United States)
School of Physics, Astronomy and Computational Sciences, George Mason University, 4400 University Drive, MSN 6A2, Fairfax, VA 22030 (United States)
Space Research Group, Physics and Mathematics Department, University of Alcalá, Alcalá de Henares, E-28871 Spain (Spain)
Institute of Experimental and Applied Physics, Christian-Albrechts University of Kiel, Kiel D-24118 (Germany)
Predictive Science, 9990 Mesa Rim Road, Suite 170, San Diego, CA 92121 (United States)

Publication Date:: Wed Dec 10 00:00:00 EST 2014

OSTI Identifier:: 22370103

Resource Type:: Journal Article

Journal Name:: Astrophysical Journal

Additional Journal Information:: Journal Volume: 797; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X

Country of Publication:: United States

Language:: English

Subject:: 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCELERATION; COMPARATIVE EVALUATIONS; EMISSION; EXTREME ULTRAVIOLET RADIATION; HELIOSPHERE; MASS; SOLAR WIND; SUN; SURFACES; VISIBLE RADIATION

Citation Formats


                    Lario, D., Raouafi, N. E., Kwon, R. -Y., Zhang, J., Gómez-Herrero, R., Dresing, N., and Riley, P. The solar energetic particle event on 2013 April 11: an investigation of its solar origin and longitudinal spread.  United States: N. p., 2014. 
        Web.  doi:10.1088/0004-637X/797/1/8.

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                    Lario, D., Raouafi, N. E., Kwon, R. -Y., Zhang, J., Gómez-Herrero, R., Dresing, N., & Riley, P. The solar energetic particle event on 2013 April 11: an investigation of its solar origin and longitudinal spread.  United States.  https://doi.org/10.1088/0004-637X/797/1/8

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                    Lario, D., Raouafi, N. E., Kwon, R. -Y., Zhang, J., Gómez-Herrero, R., Dresing, N., and Riley, P. 2014.  
        "The solar energetic particle event on 2013 April 11: an investigation of its solar origin and longitudinal spread".  United States.  https://doi.org/10.1088/0004-637X/797/1/8.

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@article{osti_22370103,

  title        = {The solar energetic particle event on 2013 April 11: an investigation of its solar origin and longitudinal spread},

  author       = {Lario, D. and Raouafi, N. E. and Kwon, R. -Y. and Zhang, J. and Gómez-Herrero, R. and Dresing, N. and Riley, P.},

  abstractNote = {We investigate the solar phenomena associated with the origin of the solar energetic particle (SEP) event observed on 2013 April 11 by a number of spacecraft distributed in the inner heliosphere over a broad range of heliolongitudes. We use extreme ultraviolet (EUV) and white-light coronagraph observations from the Solar Dynamics Observatory (SDO), the SOlar and Heliospheric Observatory, and the twin Solar TErrestrial RElations Observatory spacecraft (STEREO-A and STEREO-B) to determine the angular extent of the EUV wave and coronal mass ejection (CME) associated with the origin of the SEP event. We compare the estimated release time of SEPs observed at each spacecraft with the arrival time of the structures associated with the CME at the footpoints of the field lines connecting each spacecraft with the Sun. Whereas the arrival of the EUV wave and CME-driven shock at the footpoint of STEREO-B is consistent, within uncertainties, with the release time of the particles observed by this spacecraft, the EUV wave never reached the footpoint of the field lines connecting near-Earth observers with the Sun, even though an intense SEP event was observed there. We show that the west flank of the CME-driven shock propagating at high altitudes above the solar surface was most likely the source of the particles observed near Earth, but it did not leave any EUV trace on the solar disk. We conclude that the angular extent of the EUV wave on the solar surface did not agree with the longitudinal extent of the SEP event in the heliosphere. Hence EUV waves cannot be used reliably as a proxy for the solar phenomenon that accelerates and injects energetic particles over broad ranges of longitudes.},

  doi          = {10.1088/0004-637X/797/1/8},

  url          = {https://www.osti.gov/biblio/22370103},
  journal      = {Astrophysical Journal},

  issn         = {0004-637X},

  number       = 1,

  volume       = 797,

  place        = {United States},

  year         = {Wed Dec 10 00:00:00 EST 2014},

  month        = {Wed Dec 10 00:00:00 EST 2014}

}

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