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Brazilian Journal of Physics

, Volume 44, Issue 5, pp 504–511 | Cite as

Approaching Solar Maximum 24 with STEREO—Multipoint Observations of Solar Energetic Particle Events

  • N. DresingEmail author
  • C. M. S. Cohen
  • R. Gómez-Herrero
  • B. Heber
  • A. Klassen
  • R. A. Leske
  • G. M. Mason
  • R. A. Mewaldt
  • T. T. von Rosenvinge
Particles and Fields

Abstract

Since the beginning of the Solar Terrestrial Relations Observatory (STEREO) mission at the end of 2006, the two spacecraft have now separated by more than 130 degrees from the Earth. A 360-degree view of the Sun has been possible since February 2011, providing multipoint in situ and remote sensing observations of unprecedented quality. Combining STEREO observations with near-Earth measurements allows the study of solar energetic particle (SEP) events over a wide longitudinal range with minimal radial gradient effects. This contribution provides an overview of recent results obtained by the STEREO/IMPACT team in combination with observations by the ACE and SOHO spacecraft. We focus especially on multi-spacecraft investigations of SEP events. The large longitudinal spread of electron and 3He-rich events as well as unusual anisotropies will be presented and discussed.

Keywords

Solar energetic particle (SEP) events 

Notes

Acknowledgments

The STEREO/SEPT and SOHO/EPHIN projects are supported under Grant 50 OC 1302 by the German Bundesministerium für Wirtschaft through the Deutsches Zentrum für Luft- und Raumfahrt (DLR). R. Gómez-Herrero acknowledges financial support by the Spanish MINECO under project AYA2012-39810-C02-01. The work at Caltech was supported by NASA grants NNX13AH66G, NNX11A075G, and NNX10AQ68GS03 by NASA contract NAS5-03131 and by NSF grant 1156004.

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Copyright information

© Sociedade Brasileira de Física 2014

Authors and Affiliations

  • N. Dresing
    • 1
    Email author
  • C. M. S. Cohen
    • 2
  • R. Gómez-Herrero
    • 3
  • B. Heber
    • 1
  • A. Klassen
    • 1
  • R. A. Leske
    • 2
  • G. M. Mason
    • 4
  • R. A. Mewaldt
    • 2
  • T. T. von Rosenvinge
    • 5
  1. 1.IEAPUniversity of KielKielGermany
  2. 2.California Institute of TechnologyPasadenaUSA
  3. 3.Space Research GroupUniversity of AlcaláAlcaláSpain
  4. 4.Applied Physics LaboratoryJohns Hopkins UniversityLaurelUSA
  5. 5.NASA Goddard Space Flight CenterGreenbeltUSA

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