O
O. C. St. Cyr
Researcher at Goddard Space Flight Center
Publications - 144
Citations - 13036
O. C. St. Cyr is an academic researcher from Goddard Space Flight Center. The author has contributed to research in topics: Coronal mass ejection & Solar wind. The author has an hindex of 42, co-authored 142 publications receiving 11888 citations. Previous affiliations of O. C. St. Cyr include The Catholic University of America & Universities Space Research Association.
Papers
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Journal ArticleDOI
Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI)
Russell A. Howard,John D. Moses,Angelos Vourlidas,Jeffrey S. Newmark,Dennis G. Socker,Simon Plunkett,Clarence M. Korendyke,J. W. Cook,A. Hurley,Joseph M. Davila,William T. Thompson,O. C. St. Cyr,E. Mentzell,Kimberly I. Mehalick,James R. Lemen,Jean-Pierre Wuelser,Dexter W. Duncan,T. D. Tarbell,C. J. Wolfson,A. Moore,Richard A. Harrison,Nicholas R. Waltham,J. Lang,Christopher J. Davis,C. J. Eyles,H. Mapson-Menard,G. M. Simnett,Jean-Philippe Halain,Jean-Marc Defise,Emmanuel Mazy,Pierre Rochus,Raymond Mercier,Marie-Françoise Ravet,Franck Delmotte,F. Auchère,Jean-Pierre Delaboudiniere,Volker Bothmer,W. Deutsch,Dennis Wang,N. Rich,S. Cooper,V. Stephens,G. Maahs,R. Baugh,D. R. McMullin,T. Carter +45 more
TL;DR: The Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) is a five telescope package, which has been developed for the Solar Terrestrial Relation Observatory (STEREO) mission.
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The STEREO Mission: An Introduction
M. L. Kaiser,Therese A. Kucera,Joseph M. Davila,O. C. St. Cyr,Madhulika Guhathakurta,E. R. Christian +5 more
TL;DR: The twin STEREO spacecraft were launched on October 26, 2006, at 00:52 UT from Kennedy Space Center aboard a Delta 7925 launch vehicle to understand the causes and mechanisms of coronal mass ejection (CME) initiation and follow the propagation of CMEs through the inner heliosphere to Earth as mentioned in this paper.
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A catalog of white light coronal mass ejections observed by the SOHO spacecraft
Seiji Yashiro,Seiji Yashiro,Nat Gopalswamy,G. Michalek,G. Michalek,G. Michalek,O. C. St. Cyr,O. C. St. Cyr,Simon Plunkett,N. Rich,Russell A. Howard +10 more
TL;DR: In this paper, the authors present a summary of the statistical properties of the CMEs, including the apparent central position angle, the angular width in the sky plane, and the height (heliocentric distance) as a function of time.
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SOHO/EIT observations of an Earth-directed coronal mass ejection on May 12, 1997
Barbara J. Thompson,S. P. Plunkett,Joseph B. Gurman,Jeffrey Newmark,O. C. St. Cyr,D. J. Michels +5 more
TL;DR: In this article, an earth-directed coronal mass ejection (CME) was observed on May 12, 1997 by the SOHO Extreme ultraviolet Imaging Telescope (EIT) and was later observed by the Large Angle Spectrometric Coronagraph (LASCO) as a "halo" CME: a bright expanding ring centered about the occulting disk.
Journal ArticleDOI
Measurements of Flow Speeds in the Corona Between 2 and 30 R
N. R. Sheeley,Y.-M. Wang,Scott H. Hawley,Scott H. Hawley,Guenter E. Brueckner,Kenneth P. Dere,Russell A. Howard,M. J. Koomen,Clarence M. Korendyke,D. J. Michels,S. E. Paswaters,Dennis G. Socker,O. C. St. Cyr,Dennis Wang,Philippe Lamy,A. Llebaria,Rainer Schwenn,G. M. Simnett,S. P. Plunkett,D. A. Biesecker +19 more
TL;DR: In this article, the authors tracked the birth and outflow of 50-100 of the most prominent moving coronal features and found that they originate about 3-4 R☉ from Sun center as radially elongated structures above the cusps of helmet streamers.