X-ray emissions by charge exchange (CX; collisions between very highly charged ions and neutral atoms/molecules) are ubiquitous in our Universe, from the solar system, to clusters of galaxies. XMM-Newton, Chandra and Suzaku have accumulated a vast archive of CCD and grating resolution data which are being studied to understand CX emission. Building on this heritage, the SMILE (ESA/CAS) mission (to be launched in 2025) will provide valuable insight on the solar wind CX emission in the Earth’s vicinity both for the heliophysics and astrophysics communities. The advent of high-resolution X-ray microcalorimeters, with the recently launched XRISM/Resolve and future (LEM, Athena/X-IFU) X-ray missions, will yield unprecedented high-spectral resolution data and revolutionize our view of CX emission. All these rich resources, will need close collaboration between observers, modellers, theoreticians and experimenters to grasp the details of the CX mechanism, which is still relatively understudied.

Two past workshops, at ESAC in Madrid in 2010, and at IAP in Paris in 2012, paved the way for the beginning of such conversations between experts in the phenomenon of CX X-ray emission. This workshop aims to review our current understanding of the mechanism, and bring together the CX communities to build the tools and cooperations that will shape the future of CX X-ray science.

-Observations and Modeling (Subtopics: Solar System, Supernova Remnants, Stars - stellar winds and exoplanets, X-ray Binaries, Galaxies, Galaxy Clusters & Outflows, AGN etc.)

-Theoretical calculations

-Laboratory Experiments & Data

-X-ray plasma codes and spectral fitting

-Instrumentation, current and future facilities

• Fabio Acero                              CEA, Saclay, France
• Jenny Carter                            University of Leicester, Leicester, United Kingdom
• Konrad Dennerl                        MPE, Garching, Germany
• Kostas Dialynas                        Academy of Athens, Office of Space Research & Technology, Athens, Greece
• Philippe Escoubet                      ESA/ESTEC, The Netherlands
• Adam Foster                             Center for Astrophysics, Cambridge, MA, USA
• Nicolas Grosso                          Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France
• Matteo Guainazzi                      ESA/ESTEC, The Netherlands
• Satoru Katsuda                         Saitama University, Saitama, Japan
• Dimitra Koutroumpa (chair)       LATMOS, CNRS, UVSQ, Sorbonne Université, Guyancourt, France
• Kip D. Kuntz (co-chair)              Johns Hopkins University, Baltimore, MD, USA
• Nick Kylafis                              University of Crete, Iraklion, Greece
• Pierre Maggi                             Observatoire Astronomique de Strasbourg, Strasbourg, France
• Ronan Modolo                          LATMOS, CNRS, UVSQ, Sorbonne Université, Guyancourt, France
• Delphine Porquet (co-chair)       Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France
• Norbert Schartel                       ESA/ESAC, Spain
• Tianran Sun                             NSSC, CAS, China
• Patrice Theulé                          Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France
• Andreas Zezas                         University of Crete, Iraklion, Greece

• Kostas Dialynas                    Academy of Athens, Office of Space Research & Technology, Athens, Greece
• Dimitra Koutroumpa             LATMOS, CNRS, UVSQ, Sorbonne Université, Guyancourt, France
• Kip D. Kuntz                         Johns Hopkins University, Baltimore, MD, USA
• Nick Kylafis                          University of Crete, Iraklion, Greece
• Ronan Modolo                      LATMOS, CNRS, UVSQ, Sorbonne Université, Guyancourt, France
• Delphine Porquet                  Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France
• Andreas Zezas                     University of Crete, Iraklion, Greece

The organizers of the CXU 2024 conference are committed to making this meeting productive and enjoyable for everyone. We are dedicated to providing a harassment-free experience, regardless of gender, gender identity and expression, age, sexual orientation, disability, physical appearance, body size, race, ethnicity, religion or lack thereof. Harassment of participants in any form during the conference and social events will not be tolerated.

Attendees at the CXU 2024 meeting are welcome to share on social media, including live-tweeting, unless requested otherwise by organizers or presenters. 

Conference participants exhibiting any inappropriate behavior will be requested to stop, and are expected to comply immediately. Conference participants violating these rules may be sanctioned or expelled from the conference without a refund at the discretion of the conference organisers.

The above code of conduct is inspired by the following meeting codes of conduct: Behavior at CXC Meetings, Northwestern IMBH23 meeting, Imperial College London Data Analysis Workshop meeting, and references therein.

The meeting is sponsored by ESA through funds of the XMM-Newton, SMILE and Athena missions.

We also acknowledge the support of the French Space Agency (CNES), and the French National Institute for Earth Science and Astronomy (INSU) through its scientific programs: Sun-Earth program (PNST)