Space Weather Euro News Vol.3 Issue 9 (21-05-1999)

Table of Contents:
  1. Solar Monitoring Working Group at the Institute of Astronomy in Graz
  2. GEANT4 (Object-Oriented Particle Transport Package)Web Sites
  3. New DICTAT Web Site at DERA(Engineering Tools for Internal Charging)
  4. Reports on Freja Charging Events
  5. Coming ITT on a Study of ESA Space Weather Programme
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1. Solar Monitoring Working Group at the Institute of Astronomy in Graz

From: A. Hanslmeier E-mail:

Dear colleagues,
We want to announce that the Institute of Astronomy in Graz to which  the Solar Observatory Kanzelhoehe belongs to, has started a Solar  Monitoring Working Group. We want to participate in international  programs related to Space Weather, Space Weather forecasting, flare  studies etc. At the solar observatory Kanzelhoehe we at present have  the following possibilites:

1. H-Alpha Flare patrol with variable time cadence
2. low resolution Magnetograms and Dopplerimages
3. high precision position solar photospheric camera
4. within a couple of months the PST (Photometric Solar Telescope) will be operational: with that instrument the Sun can be monitored in different wavelength using different filter (similar to the RISE project).

Please find more information on the institute's homepage:

A. Hanslmeier

2. GEANT4 (Object-Oriented Particle Transport Package) Web Sites

From: P. Nieminen E-mail:

GEANT4 is a new-generation, object-oriented particle transport package, developed by a world-wide collaboration of about 100 scientists from over  40 institutions and laboratories in Europe, Russia, Japan, Canada and the  United States. ESA is currently participating in this collaboration by  sponsoring the development of a number of space-specific software modules  for the toolkit. These include a ray-tracing sector shielding analysis tool;  an extension of low-energy electromagnetic processes of the code down to  250 eV; a module for treatment of delayed radioactive decay; a CAD tool  front-end, and a general purpose source particle module.

For further information, please see the Web site of the main contractor  DERA at
and the GEANT4 Web site at

3. New DICTAT Web Site at DERA (Engineering Tools for Internal Charging)

From: J. Sorensen E-mail:

Engineering Tools for Internal Charging

Internal dielectric charging is a significant hazard to satellites exposed to the Earth's outer radiation belts. For the last couple of years DERA (UK) has been working with ONERA/DESP (F) to develop an engineering tool to asses this hazard (ESA contract 12115/96/NL/JG(SC)). There is now a DERA web site available dedicated to this work:

A final report for the first phase of this work is also available.

It proposes an engineering specification in terms of a set of models that represent the most up-to-date knowledge of internal dielectric charging, reports on the development of a simple to use software DICTAT supporting  the specification and describes the efforts experimentally to validate the  tool. Although the development and validation of the tool are still ongoing,  the first version has been released and can be accessed via SPENVIS:

4. Reports on Freja Charging Events

From: A. Hilgers E-mail:

Two more reports on the electrostic charging events observed on the Swedish auroral spacecraft, Freja, are now available at the ESA Contrat Reports page.

Analysis of Freja charging events: Statistical occurrence of charging events,
by J.-E. Wahlund, L. Wedin,   T. Carrozi, A. I, Eriksson, B. Holback, L. Anderson and H. Laakso, ESA contract No 11974/96/NL/JG(SC), SPEE-WP130-TN, March 1999.

Analysis of Freja charging events: Charging events identification and case study,
by J.-E. Wahlund, L. Wedin, A. I, Eriksson, B. Holback and L. Anderson, ESA contract No 11974/96/NL/JG(SC), SPEE-WP110-TN, March 1999.

Part 1
Part 2
Part 3

5. Coming ITT on a Study of ESA Space Weather Programme

From: A. Hilgers E-mail:

Currently available information on this coming ITT can be found at:
People interested to receive directly the ITT as soon as published should register to EMITS ( ) and state their  interest for this ITT.


Note: This newsletter is an initiative of the ESA Space Systems Environment Analysis Section and is intended to establish a prototype of a potential mailing list or forum with news of interest for the Space Weather community in Europe.

- SWEN contact group (which keeps SWEN informed of news coming from   other channels)is currently:

  • Eamonn Daly, ESA (excluding science programme)
  • Richard Marsden, ESA science programme
  • Maurizio Candidi, CNR 
  • Paul Cannon, URSI-Commission G 
  • Mike Hapgood,  EGS
  • Hannu Koskinen, SCOSTEP working group on Space weather
  • Pierre Lantos, ISES
  • Henrik Lundstedt, Lund space weather center
  • Goetz Paschmann, ISSI
  • Jean-Yves Prado, CNES-ONERA working group on space weather
  • Michael Rycroft, ISU 
  • Volker Bothmer, EGS-Solar Physics Secretary
  • Wolfgang Baumjohann, MPE-German Representative

- SWEN archives are also available on:                

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We are looking forward to receiving your inputs.

The SWEN editor

Alain Hilgers



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