Positron Annihilation Line from the 15 November 1991 Flare

Details Positron Annihilation Line from the 15 November 1991 Flare Positron Annihilation Line from the 15 November 1991 Flare

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994kofu.symp..123k&link_type=abstract

In: Proceedings of Kofu Symposium, Kofu, Japan, Sept. 6-10, 1993, p.123-126.

Physics

1

Scientific paper

Time history of the positron annihilation line produced during 15 November 1991 flare (X1.0/3B) is calculated from the precipitation rate and the energy spectrum of energetic ions estimated from prompt nuclear lines and neutron capture line. It is shown that integration time dependence of the integrated counts can be interpreted by a model of Kawabata et al.(1994), i.e. more than half of positrons annihilates in coronal flare loops with a density of 10^12-10^13 cm^(-3) and with a temperature of 10^6 - 3 x 10^6 K. The number of protons impinging on the photosphere with energies >30 MeV is estimated to be 1.5 x 10^32 and the energy of these protons is 9 x 10^27 erg. When we extrapolate the energy spectrum of protons to lower energy, the total energy of energetic nuclei impinging on the photosphere can be estimated to be 10^30 erg.

Affiliated with

Also associated with

No associations

Rating

Positron Annihilation Line from the 15 November 1991 Flare 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 Positron Annihilation Line from the 15 November 1991 Flare, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positron Annihilation Line from the 15 November 1991 Flare will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-821174