Gamma-Ray Radiation with Energy 2.223 MeV and the Density Distribution in the Solar Atmosphere during Flares

Details Gamma-Ray Radiation with Energy 2.223 MeV and the Density Distribution in the Solar Atmosphere during Flares Gamma-Ray Radiation with Energy 2.223 MeV and the Density Distribution in the Solar Atmosphere during Flares

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005arep...49..567k&link_type=abstract

Astronomy Reports, vol. 49, Issue 7, p.567-578

Astronomy and Astrophysics

Astronomy

3

Scientific paper

Interactions of particles accelerated in solar flares with matter in the solar atmosphere give rise to neutrons, which are efficiently captured on hydrogen nuclei as they are slowed to thermal velocities. This capture is accompanied by the emission of a gamma-ray with energy 2.223 MeV. Observational data for the temporal profiles of the gamma-ray fluxes in this line are used to study the plasma-density distribution in the solar atmosphere during the flares of December 16, 1988, March 22, 1991, and November 6, 1997. This analysis is based on comparisons between the observations and profiles computed taking into account a number of parameters describing the generation and transport of the flare neutrons in atmospheric layers of various densities. In three cases studied, the density of the material in the photosphere below the flare region is enhanced compared to the density in an unperturbed part of the solar atmosphere at the same height. In the case of the December 16, 1988 flare, we are able for the first time to relate the profile of the 2.223 MeV line with the shape of the accelerated particle (proton) spectrum. This opens new possibilities for studies of particle acceleration on the Sun based on observations of flare gamma-ray emission.

Affiliated with

Also associated with

No associations

Rating

Gamma-Ray Radiation with Energy 2.223 MeV and the Density Distribution in the Solar Atmosphere during Flares does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Gamma-Ray Radiation with Energy 2.223 MeV and the Density Distribution in the Solar Atmosphere during Flares, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gamma-Ray Radiation with Energy 2.223 MeV and the Density Distribution in the Solar Atmosphere during Flares will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1434190