X-ray Astronomy Steps into the 21st Century: Chandra and XMM-Newton at 25

Dear Colleagues,

The year 2024 marks a significant milestone in the field of X-ray astronomy, as it commemorates the 25th anniversary of the launch of two pioneering X-ray observatories, Chandra and XMM-Newton. As we approach this momentous occasion, it provides an opportune time to reflect upon the achievements made in the study of X-ray wavelengths and showcase the original research that has stemmed from the observations in this spectral region. Additionally, it is crucial to acknowledge the multitude of other X-ray satellites that have played an integral role in furthering our understanding of the cosmos.

We invite researchers and scientists across the globe to contribute their expertise and insights, fostering discussions and collaborations that push the boundaries of X-ray astronomy further. By collectively sharing our knowledge and discoveries, we can continue to unravel the mysteries encapsulated within the stunning area of X-ray astronomy.

Topics include, but are not limited to, the following:

1. Chandra at 25 years;
2. XMM-Newton at 25 years;
3. Solar system X-ray sources;
4. Single low-mass stars;
5. Single high-mass stars;
6. Open clusters;
7. Single white dwarfs;
8. WD binaries (not CVs);
9. Cataclysmic variables;
10. BH/NS binaries—isolated;
11. BH/NS binaries—globular clusters;
12. Supernovae;
13. Supernova remnants;
14. Isolated neutron stars;
15. Normal face-on galaxies;
16. Edge-on galaxies;
17. Low-mass X-ray binaries in galaxies;
18. High-mass X-ray binaries in galaxies;
19. Active galaxies;
20. Galaxy clusters;
21. Star formation/diffuse-emission regions;
22. Extragalactic diffuse emission;
23. Extragalactic surveys;
24. Galactic survey(s);
25. Future observatory priorities.

Prof. Dr. Eric Schlegel
Guest Editor

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• X-ray astrophysics
• high-resolution X-ray imaging
• diffraction grating X-ray spectroscopy
• active galaxies
• X-ray binaries
• supernova remnants
• normal galaxies
• galaxy clusters