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Solar Physics

, Volume 256, Issue 1–2, pp 57–72 | Cite as

Stereoscopic Analysis of the 19 May 2007 Erupting Filament

  • P. C. LiewerEmail author
  • E. M. De Jong
  • J. R. Hall
  • R. A. Howard
  • W. T. Thompson
  • J. L. Culhane
  • L. Bone
  • L. van Driel-Gesztelyi
STEREO SCIENCE RESULTS AT SOLAR MINIMUM

Abstract

A filament eruption, accompanied by a B9.5 flare, coronal dimming, and an EUV wave, was observed by the Solar TERrestrial Relations Observatory (STEREO) on 19 May 2007, beginning at about 13:00 UT. Here, we use observations from the SECCHI/EUVI telescopes and other solar observations to analyze the behavior and geometry of the filament before and during the eruption. At this time, STEREO A and B were separated by about 8.5°, sufficient to determine the three-dimensional structure of the filament using stereoscopy. The filament could be followed in SECCHI/EUVI 304 Å stereoscopic data from about 12 hours before to about 2 hours after the eruption, allowing us to determine the 3D trajectory of the erupting filament. From the 3D reconstructions of the filament and the chromospheric ribbons in the early stage of the eruption, simultaneous heating of both the rising filamentary material and the chromosphere directly below is observed, consistent with an eruption resulting from magnetic reconnection below the filament. Comparisons of the filament during eruption in 304 Å and Hα  show that when it becomes emissive in He II, it tends to disappear in Hα , indicating that the disappearance probably results from heating or motion, not loss, of filamentary material.

Keywords

Corona Prominences Filaments Eruptions Stereoscopy 

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Copyright information

© US Government 2009

Authors and Affiliations

  • P. C. Liewer
    • 1
    Email author
  • E. M. De Jong
    • 1
  • J. R. Hall
    • 1
  • R. A. Howard
    • 2
  • W. T. Thompson
    • 3
  • J. L. Culhane
    • 4
  • L. Bone
    • 4
  • L. van Driel-Gesztelyi
    • 4
    • 5
    • 6
  1. 1.Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaUSA
  2. 2.Naval Research LaboratoryWashingtonUSA
  3. 3.Adnet Systems, Inc.LanhamUSA
  4. 4.University College London, Mullard Space Science LaboratoryDorkingUK
  5. 5.Observatoire de Paris, LESIA, FRE 2461(CNRS)Meudon Principal CedexFrance
  6. 6.Konkoly Observatory of Hungarian Academy of SciencesBudapestHungary

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