Solar neutron events associated with large solar flares in solar cycle 23

Details Solar neutron events associated with large solar flares in solar cycle 23 Solar neutron events associated with large solar flares in solar cycle 23

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006asthe..99..249w&link_type=abstract

The Astronomical Herald (ISSN 0374-2466), Vol. 99, No. 5, p. 249 - 258 (2006)

Astronomy and Astrophysics

Astronomy

Solar Flares, Solar Neutrons

Scientific paper

We have investigated ion acceleration mechanisms in solar flares by observing solar neutrons produced in association with these solar flares. In solar cycle 23, five solar neutron events were observed by ground-based neutron monitors. The statistical significances of all these events were, very high (more than 5&sigma:), and the excesses were clear. At the solar flares, which produced solar neutron events, intense emissions of hard X-rays and high energy γ-rays were observed by many satellites. It seems that solar neutrons are produced with high energy γ-rays, especially line γ-rays of de-excited ions, simultaneously.

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