OSSE observations of solar flares

R. J. Murphy, G. H. Share, J. E. Grove, W. N. Johnson, R. L. Kinzer, R. A. Kroeger, J. D. Kurfess, M. S. Strickman, S. M. Matz, D. A. Grabelsky, W. R. Purcell, Melville P Ulmer, R. A. Cameron, G. V. Jung, C. M. Jensen, W. T. Vestrand, D. J. Forrest

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations


The Oriented Scintillation Spectrometer Experiment (OSSE) on the Compton Gamma Ray Observatory (CGRO) provides solar-flare observation capabilities that represent a significant improvement over previous experiments. In this paper, we discuss the OSSE solar observation modes, give an overview of the solar-flare observations to date, and discuss in some detail the observations obtained during the June 1991 CGRO solar Target of Opportunity. We show evidence for time structure of flare hard X-ray (>100 keV) emission as short as tens of msec. Several nuclear deexcitation lines along with emission >10 MeV were seen from the four GOES X10+ flares observed by OSSE. Neutrons were observed from two of the flares. Preliminary results from a search of the OSSE flare database for nuclear emission from weak flares are presented and compared to results from a similar search of the Solar Maximum Mission Gamma-Ray Spectrometer database.

Original languageEnglish (US)
Title of host publicationCompton Gamma-Ray Observatory
EditorsNeil Gehrels, Michael W. Friedlander, Daryl J. Macomb
PublisherAmerican Institute of Physics Inc.
Number of pages12
ISBN (Electronic)1563961040
StatePublished - Jan 1 1993
EventCompton Symposium - St. Louis, United States
Duration: Oct 15 1992Oct 17 1992

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


ConferenceCompton Symposium
Country/TerritoryUnited States
CitySt. Louis

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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