Distribution Functions of Energetic Flare Particles
Glasgow, Scotland,   March 30 - April 1, 2005


Working Group Themes:
- Photon spectra and images -> radiation source (volume or line of sight
   integrated) particle distributions.
- Inversion and forward fitting approaches.
- Effects of method and cross section  and albedo.

Working group membership (click on the name for that person's abstract):

John Brown  (john@astro.gla.ac.uk)
Gordon Emslie  (emslieg@uah.edu)
Gordon Holman  (holman@stars.gsfc.nasa.gov)
Christopher Johns-Krull  (chair, cmj@rice.edu)
Bob Lin  (rlin@ssl.berkeley.edu)
Anna Maria Massone  (massone@ge.infm.it)
Victor F. Melnikov (meln@nirfi.sci-nnov.ru)
Michele Piana  (piana@dima.unige.it)
Marco Prato  (prato@dima.unige.it)
Ed Schmahl  (schmahl@hessi.gsfc.nasa.gov)
Valentina Zharkova  (v.v.zharkova@Bradford.ac.uk)

Straw Program:

Current Program 

Notes: As in the past, we have a relatively small working group.  This is more so this year as Ed Schmahl and Marco Prato are not going to be able to attend.  As a result, we have been able in the past 2 years to have very active discussions followed by periods of down time when we developed code, tried new models, and/or looked at new events.  I think this was a great success.  Therefore, I hope that we will be able to maintain this true workshop-like atmosphere durning this years meeting.  Programatically, this means we will have relatively few, truly formal presentations.  However, I do want to give each of you time to present your latest work and raise issues.  If you have not done so already, please email me to let me know if you would like to present something to the team and/or lead a discussion on a particular topic.  Based on the responses I have received so far to my earlier email and the abstracts each of you included in your response to Eduard, I have developed the straw plan given below.  The names given in parenthesis after each topic include folks that I currently think will want to present something on that subject.  If you feel your name should be somewhere it is not, or is somewhere you don't want it to be, please email me.  I will wait until closer to the workshop date to try and assign dates and times to the topics.  One other note, there is certainly overlap between us and the other groups, and we are currently working on at least one joint session with Team 3.  For scheduling purposes, it is looking like that will be Wednesday afternoon.  Looking forward to seeing you all there.

I. Bremsstrahlung cross-sections and additions to solar soft: status report (Emslie, Johns-Krull)

II. Inverting photon spectra to recover electron spectra (Brown, Emslie, Johns-Krull, Lin, Kontar, Massone, Piana)
       A. Status report on blind inversion paper (Brown, Emslie)
       B. Doing inversions without assuming isotropic emission (Brown, Massone, Kontar)
       C. Goodness of fit criteria for derived electron spectra (Emslie, Holman)
       D. What are the number of degrees of freedom in the various inversion algorithms and how does that impact goodness of fit and uncertainty estimates? (Brown, Johns-Krull)
       E. Demonstration of regularized inversion code for use in Solar Soft (Massone)

III. Forward-fitting and the use of models to look for specific X-ray diagnostics (Emslie, Holman, Zharkova)

IV. Other complications
       A. Effects of albedo, including anisotropy (Brown, Johns-Krull, Kontar, Alexander, Hurford)
       B. Pile-up issues (Smith?, Lin, Krucker?, Johns-Krull)

V. Inverting to find the flare thermal distribution (Piana, Johns-Krull)

VI. Studies at other wavelengths and their implications for accelerated electrons (Melnikov)

VII. Methods to perform imaging spectroscopy (Lin)

VIII. Other interesting events to re-examine or to start looking at (All)