Abstract The ability to measure solar flare neutrons by the COMPTEL γ-ray telescope on-board the Compton Gamma Ray Observatory has been demonstrated during the observations of the powerful solar flares of June 1991 from Active Region 6659. We present intensity-time profiles and count rate spectra from the impulsive X10 flare on 1991 June 19 and the prolonged X12+ flare on 1991 June 15. The emission of neutrons during the 9 June flare is coincident in time with the impulsive γ-ray emission, while the neutron emission during the 15 June flare takes place from the time of the X-ray maximum and for at least 30 minutes thereafter. The detected neutrons can also be used to image the Sun in heavy particles, the first time a celestial object has been imaged in radiation other than electromagnetic radiation.
Comptel measurements of solar flare neutrons
Advances in Space Research ; 13 , 9 ; 255-258
1993-01-01
4 pages
Article (Journal)
Electronic Resource
English
Comptel observations of solar flare gamma-rays
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