Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.2004m&link_type=abstract
American Astronomical Society, SPD meeting #40, #20.04; Bulletin of the American Astronomical Society, Vol. 41, p.852
Astronomy and Astrophysics
Astronomy
Scientific paper
We have shown that recombination emission can exceed the bremsstrahlung Hard X-ray (HXR) flux for certain flare conditions. Here we will show that particular spectral features may suggest non-thermal recombination plays a significant part in the flare HXR continuum, something that has been ignored in the past. It is important to note that these results could demand a reconsideration of the numbers of accelerated electrons since recombination can be much more efficient in producing HXR photons than bremsstrahlung. In related work on diagnosing flare ion and relativistic electron acceleration, we have also been reconsidering the role of Inverse Compton (IC) scattering of photospheric photons. Gamma-ray observations clearly show the presence of 100 MeV electrons and positrons in the solar corona, by-products of GeV energy ions. Here we will present results of IC scattering of such photons taking proper account of radiation field geometry near the surface. If observed, such radiation would let us determine the number of secondary positrons produced in large flares, contributing to a full picture of ion acceleration and to predicting neutron fluxes to be encountered by future inner heliosphere space missions.
Brown John C.
MacKinnon Alexander L.
Mallik Procheta
No associations
LandOfFree
Solar X-ray Processes 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 Solar X-ray Processes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar X-ray Processes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1112867