@article{770614f52cdb4f6b811d001a1c8a1a73,
title = "Measurements of filament height in Hα and EUV 304 {\AA}",
abstract = "In this study, we present the three-dimensional (3D) configuration of a filament observed by STEREO and the Global High Resolution H-alpha Network (GHN) in EUV 304 {\AA} and Hα line center, respectively. This was the largest filament located close to the active region NOAA 10956 that produced a small B9. 6 flare and two Coronal Mass Ejections (CMEs) on 19 May 2007. The 3D coordinates of multiple points traced along this filament were reconstructed by triangulation from two different aspect angles. The two STEREO (A and B) spacecraft had a separation angle α of 8.6 degree on 19 May 2007. The {"}true{"} heights of the filament were estimated using STEREO images in EUV 304 and Hα images, respectively. Our results show that EUV emission of the filament originates from higher locations than the Hα emission. We also compare the measured reconstructed heights of the filaments in EUV with those reported in previous studies.",
keywords = "Corona, Filament, Magnetic fields, Prominences, Ultraviolet",
author = "Yan Xu and Ju Jing and Haimin Wang",
note = "Funding Information: Acknowledgements The authors would thank Dr. Markus Aschwanden for providing the 3D reconstruction code and valuable discussion. The authors sincerely thank the anonymous referee for his/her suggestions to improve this paper. We also thank Drs. Yan Li and Paulett Liewer for their comments and suggestions. The Global High Resolution Ha Network is supported by NSF under grant ATM-0839216. This work is supported by NASA under grants NNX08-AJ23G and NNX08-AQ90G. JJ was supported by NSF under grant ATM 09-36665 and ATM 07-16950. The STEREO/SECCHI data used here were produced by an international consortium of the Naval Research Laboratory (USA), Lockheed Martin Solar and Astrophysics Lab (USA), NASA Goddard Space Flight Center (USA), Rutherford Appleton Laboratory (UK), University of Birmingham (UK), Max-Planck-Institut for Solar System Research (Germany), Centre Spatiale de Li{\`e}ge (Belgium), Institut d{\textquoteright}Optique Thorique et Appliqu{\'e}e (France), and Institut d{\textquoteright}Astrophysique Spatiale (France). The USA institutions were funded by NASA, the UK institutions by the Science & Technology Facility Council (which used to be the Particle Physics and Astronomy Research Council, PPARC), the German institutions by Deutsches Zentrum f{\"u}r Luftund Raumfahrt e.V. (DLR), the Belgian institutions by Belgian Science Policy Office, and the French institutions by Centre National d{\textquoteright}Etudes Spatiales (CNES) and the Centre National de la Recherche Scientifique (CNRS). The NRL effort was also supported by the USAF Space Test Program and the Office of Naval Research.",
year = "2010",
doi = "10.1007/s11207-010-9573-9",
language = "English (US)",
volume = "264",
pages = "81--91",
journal = "Solar Physics",
issn = "0038-0938",
publisher = "Springer Netherlands",
number = "1",
}