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--- tests:collision [2015/09/02 07:28] – v.henault-brunet
+++ tests:collision [2022/10/24 12:10] (current) – external edit 127.0.0.1
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 **Working group coordinators:** Mark Gieles, Vincent Henault-Brunet (m.gieles, v.henault-brunet [at] surrey.ac.uk)
+[[:tests:collision:GC4| Gaia Challenge 4 (Stockholm) Collisional systems discussion and results]].
 You will find here some challenges based on data from collisional N-body models. These mock data are designed to mimic collisional systems like star/globular clusters.
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 Links to some useful fitting and analysis tools are listed in the [[:tests:collision:tools|Tools section]].
-Ideas and challenges for the Gaia Challenge III workshop (Barcelona) are listed [[:tests:collision:GC3|here]].
+Ideas and goals for the Gaia Challenge III workshop (Barcelona) are listed [[:tests:collision:GC3|here]].
+Throughout the Gaia Challenge I-III workshops, we have tackled four specific challenges:
+**1. Single mass clusters: the interplay of anisotropy and tides (Zocchi et al. in prep)**
+**2. Clusters with a mass spectrum: testing the validity of multi-mass models (Peuten et al. in prep)**
+**3. Observational biases (Sollima et al. 2015)**
+**4. Method comparison: Jeans modelling vs Distribution-function based models**
+Many of the challenges make use of LIMEPY ([[http://arxiv.org/abs/1508.02120|Gieles & Zocchi 2015]]) developed in the context of the Gaia Challenge.