1. Watch This Space! Monsters at Work Liz Puchnarewicz Mullard Space Science Laboratory University College London

2. Light comes in waves or packets electromagnetic waves photons

3. It all goes at the same speed

4. White light No. of photons energy wavelength spectrum

5. ‘Hot’ light No. of photons energy wavelength spectrum

6. Hot light from stars No. of photons energy wavelength spectrum

7. Thick heat dense gas slab blackbody radiation thick gas No. of photons energy wavelength

8. Quasar soft X-ray spectra blackbody radiation thick gas No. of photons energy wavelength soft X-raysEUVUV

9. Spectral lines No. of photons energy wavelength spectrum

10. Atomic line transitions ground  ionized    Ly  Ly 

11. Emission line spectra ground  ionized    Ly  Ly  No. of photons energy wavelength

12. Cosmological distances No. of photons energy wavelength quasar No. of photons energy wavelength laboratory

13. X-ray spectra from space The XMM- Newton observatory

14. Fluorescence ground  ionized   

15. Iron disks in X-rays No. of photons energy wavelength

16. Quasar accretion disks No. of photons energy wavelength soft X-raysEUVUV

17. The disk in MCG-6-30-15

18. A very hot corona No. of photons energy wavelength soft X-rays EUVUV hard X-rays disk continuum disk line

19. Electrons kick light into X-rays Fast-moving electron Inverse Compton scattering

20. A quasar

21. Thin heat thin gas slab bremsstrahlung radiation thin gas No. of photons energy wavelength

22. Gamma-ray bursts

23. Ultimate devastation The SWIFT mission

24. Scary monsters at work

25. Watch This Space! Monsters at Work Liz Puchnarewicz Mullard Space Science Laboratory University College London