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Exploring Seyfert Galaxies and Supermassive Black Holes in Galactic Nuclei

This section delves into active galaxies, specifically Seyfert galaxies such as NGC 5548 and NGC 3277, comparing their optical and X-ray spectra. The discussion highlights the dual classifications of Seyfert galaxies (Type 1 and Type 2) and presents data from telescopes like XMM-Newton and Hubble. It also covers the significant role of supermassive black holes in normal galaxies, referencing crucial evidence for their existence, as seen in M31. The text emphasizes the unified model of active galaxies and the M-Sigma relation, providing insights into galactic nuclei dynamics.

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Exploring Seyfert Galaxies and Supermassive Black Holes in Galactic Nuclei

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Presentation Transcript

  1. PX269 Galaxies Part 5: Galactic nuclei 5.1 Active galaxies

  2. Seyfert galaxies NGC 5548 (Seyfert galaxy) NGC 3277 (normal galaxy)

  3. Typical galaxy spectrum (optical)

  4. Optical spectra of Seyfert nuclei Type 1(broad allowed lines) Type 2 (narrow lines)

  5. XMM-Newton X-ray telescope

  6. X-ray spectra of active galaxies Type 1 Type 2 Type 2 Type 1

  7. X-rays Broadband energy spectrum

  8. Rapid Variability

  9. 76m Lovell Radio Telescope

  10. Radio image of Cygnus A (a radio galaxy)

  11. Combined optical and radio images of Cen A

  12. Optical jet in M87 a nearby gE galaxy HST

  13. HST image of the quasar 3C 273

  14. X-ray jet from the quasar 3C 273

  15. Optical spectra of active galaxies

  16. Unified Model

  17. Unified Model

  18. NGC1068 Crucial evidence supporting unified model Total flux Type 2 spectrum Polarised flux Type 1 spectrum

  19. Transition between Type 1 and 2 in a single object 1984: Type 2 1974: Type 1

  20. Part 5: Galactic nuclei 5.2 Super-massive black holes in normal galaxies

  21. Kormendy 1988 Evidence for a super-massive black hole at the nucleus of M31

  22. Hubble Space Telescope

  23. Very Large Telescope (VLT) European Southern Observatory (ESO) in Chile

  24. Schoedel et al 2002, Nature 419, 694

  25. Schoedel et al 2002, Nature 419, 694

  26. Schoedel et al 2002, Nature 419, 694

  27. Schoedel et al 2002, Nature 419, 694

  28. The M-Sigma relation Tremaine et al 2002, ApJ 574, 740

  29. Kormendy 1988 Evidence for a super-massive black hole at the nucleus of M31

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