J
James R. Lemen
Researcher at Advanced Technology Center
Publications - 154
Citations - 19560
James R. Lemen is an academic researcher from Advanced Technology Center. The author has contributed to research in topics: Solar flare & Flare. The author has an hindex of 42, co-authored 154 publications receiving 18011 citations.
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Proceedings ArticleDOI
X-ray calibration of the GOES-N/O solar X-ray imagers
Paul R. Catura,Brennan Gantner,Bruce K. Jurcevich,Claude K. Kam,James R. Lemen,Mons D. Morrison,L. Shing,Richard C. Catura +7 more
TL;DR: In this paper, the X-ray calibration of the GOES Solar X-Ray Imagers (SXI) was performed at the component level and at the instrument level.
Journal Article
The morphology of 20 x 10 exp 6 K plasma in large non-impulsive solar flares
Loren W. Acton,Uri Feldman,Marilyn E. Bruner,George A. Doschek,T. Hirayama,Hugh S. Hudson,James R. Lemen,Yoshiaki Ogawara,Keith T. Strong,Saku Tsuneta +9 more
TL;DR: In this paper, the authors examined images of 10 soft X-ray flares from the Yohkoh spacecraft and found that the hottest portion of the soft Xray flare is located in compact regions that appear to be situated at the top of loops.
Proceedings ArticleDOI
Recent advances in EUV optics for use in solar physics
Dennis S. Martinez-Galarce,Paul Boerner,Regina Soufli,James E. Harvey,Marilyn E. Bruner,James R. Lemen,Eric M. Gullikson,B. De Pontieu,Narak Choi,Mónica Fernández-Perea,N. Katz,Sherry L. Baker,Evan Prast,Shayna Khatri,J. Kong +14 more
TL;DR: In this paper, the authors present results that demonstrate their ability to estimate EUV performance as well as experimental data that show the viability of using SiC for fabricating the next generation of space-based EUV telescopes.
Journal ArticleDOI
Spatial and spectral characteristics of the X-ray sources in the 15 November 1991 solar flare
TL;DR: In this article, the spatial and spectral parameters of the soft X-ray source and the spectrum and directivity of the hard Xray source were analyzed for the Yohkoh satellite's 15 November 1991 flare, which was observed also by Ulysses, Pioneer Venus Orbiter and Compton Observatory/GRO spacecraft.
Journal ArticleDOI
Detection of Large-Scale Radio Structure and Plasma Flow during a Solar Bright Point Flare
TL;DR: In this article, the authors detected a large-scale radio structure and plasma flow associated with a bright point flare observed on 1993 July 11, which was simultaneously imaged by the Nobeyama radioheliograph at 17 GHz and the Soft X-Ray Telescope on board the Yohkoh mission.