Agn

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Agn

  1. 1. AGN By: Kyle Horvath
  2. 2. Active Galactic Nuclei <ul><li>Galaxies that release massive amounts of energy. </li></ul><ul><li>They are extremely luminous. </li></ul><ul><li>Emit radio waves and visible light. </li></ul><ul><li>AGN are usually classified into Quasars, Blazars, Radio Galaxies, and Starburst Galaxies, and Seyfert Galaxies. </li></ul>
  3. 3. AGN Structure <ul><li>Super massive Black Holes in the middle. </li></ul><ul><li>Black Holes are surrounded by the accretion disks. </li></ul><ul><li>Then the torus surrounds that. </li></ul><ul><li>Two relativistic jets . </li></ul>
  4. 4. Super Massive Black Holes <ul><li>A gravitational field in space so strong not even light can escape it. </li></ul><ul><li>The event horizon is the area which not even light can escape. </li></ul>
  5. 5. Red Shift <ul><li>Electromagnetic radiation that is shift towards red end of the spectrum </li></ul><ul><li>Red shift changes due to the expansion of the universe </li></ul><ul><li>Used in AGN to calculate distance, luminosity, velocity, and more. </li></ul>
  6. 6. Quasar <ul><li>The oldest and furthest galaxies in our universe. </li></ul><ul><li>Extremely bright. </li></ul><ul><li>Highly red shifted. </li></ul>
  7. 7. Seyfert Galaxies <ul><li>Bright Emission lines </li></ul><ul><li>Produce spectral line emission </li></ul><ul><li>Have types 1 and 2 </li></ul><ul><li>Type 1 has both broad and narrow </li></ul><ul><li>Type 2 has just narrow </li></ul>
  8. 8. BL Lac/Blazars <ul><li>High energy galaxies </li></ul><ul><li>Its spectrum is void of emission and absorption lines. </li></ul><ul><li>Only telluric bands are visible. </li></ul><ul><li>Thought to be looking at galaxies through its jets. </li></ul>
  9. 9. Why Use AGN? <ul><li>AGN are typically extremely luminous optically and in radio. </li></ul><ul><li>Astronomers use AGN to understand galactic evolution. </li></ul><ul><li>They hope to predict the future of our on galaxy through AGN. </li></ul><ul><li>Also through study astronomers can hypothesize the creation of the universe. </li></ul>
  10. 10. AGN IN SJHSRC <ul><li>In class we look through spectroscopy of AGN </li></ul><ul><li>We use Graphical Analysis </li></ul><ul><li>“ In theory” ~Doc.Laug, we can gain insights on how our universe was created and how its evolving. </li></ul>

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