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.
Papers
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Journal ArticleDOI
SOLAR-A reformatted data files and observing log
M. Morrison,James R. Lemen,Loren W. Acton,R. D. Bentley,Takeo Kosugi,Saku Tsuneta,Y. Ogawara,Takashi Watanabe +7 more
TL;DR: An overview of the files which will be created and the format and organization which the files will use is given to be efficient in space, to ease access to the data, and to allow for the data to be transportable to different machines.
Journal ArticleDOI
The Solar-A soft X-ray telescope experiment
Loren W. Acton,Marilyn E. Bruner,W. A. Brown,James R. Lemen,T. Hirayama,Saku Tsuneta,Tetsuya Watanabe,Y. Ogawara +7 more
TL;DR: The Japanese Solar-A mission for the study of high energy solar physics is timed to observe the sun during the next activity maximum as mentioned in this paper, which includes a carefully coordinated complement of instruments for flare studies.
Journal ArticleDOI
Synoptic Solar Cycle 24 in Corona, Chromosphere, and Photosphere Seen by the Solar Dynamics Observatory
TL;DR: In this paper, the authors presented the global evolution of solar cycle 24 from 20 May 2010 to 31 August 2013 using synoptic maps constructed from full-disk, line-of-sight magnetic field imagery and extreme ultraviolet (EUV) imagery.
Proceedings ArticleDOI
Measurement Of The Point Spread Function And Effective Area Of The Solar-A Soft X-Ray Telescope Mirror
James R. Lemen,E. S. Claflin,William A. Brown,Marilyn E. Bruner,R. C. Catura,Mons D. Morrison +5 more
TL;DR: The Soft X-ray Telescope (SXT) as mentioned in this paper has been used to study the 1/r character of the point spread function (PSF) and the effective area of the SXT mirror.
Journal ArticleDOI
Calcium abundance measurements using the Yohkoh BCS
TL;DR: In this article, the Yohkoh Bragg Crystal Spectrometer (BCS) in helium-like Ca XIX has been analyzed, and Ca abundance determined for 177 flares observed during the first four years of the mission (1991-1995).