Active Galactic Nuclei
description
Transcript of Active Galactic Nuclei
![Page 1: Active Galactic Nuclei](https://reader036.fdocuments.us/reader036/viewer/2022062520/56816110550346895dd06aa8/html5/thumbnails/1.jpg)
Active Galactic Nuclei
Nick DiPreta
![Page 2: Active Galactic Nuclei](https://reader036.fdocuments.us/reader036/viewer/2022062520/56816110550346895dd06aa8/html5/thumbnails/2.jpg)
Nebula
• Inside nebula are stellar nurseries
• Stars begin to form from the gases that are the remnants of past supernovae
![Page 3: Active Galactic Nuclei](https://reader036.fdocuments.us/reader036/viewer/2022062520/56816110550346895dd06aa8/html5/thumbnails/3.jpg)
![Page 4: Active Galactic Nuclei](https://reader036.fdocuments.us/reader036/viewer/2022062520/56816110550346895dd06aa8/html5/thumbnails/4.jpg)
Formation of an Average Black Hole
![Page 5: Active Galactic Nuclei](https://reader036.fdocuments.us/reader036/viewer/2022062520/56816110550346895dd06aa8/html5/thumbnails/5.jpg)
Super Massive Black Hole
•Result of a galaxy merger•One possible way
![Page 6: Active Galactic Nuclei](https://reader036.fdocuments.us/reader036/viewer/2022062520/56816110550346895dd06aa8/html5/thumbnails/6.jpg)
Super Massive Black Hole
• Hubble Deep field found galaxies of irregular shape
• From beginning of universe
![Page 7: Active Galactic Nuclei](https://reader036.fdocuments.us/reader036/viewer/2022062520/56816110550346895dd06aa8/html5/thumbnails/7.jpg)
Super Massive Black Hole
• Knots of gas form pockets of stars at beginning of the Universe.
• Huge stars ~ 10sm formed with short life
• Result is SMBH at the end of Super Nova which eats up surrounding material
• Also could be result of galaxy merger
![Page 8: Active Galactic Nuclei](https://reader036.fdocuments.us/reader036/viewer/2022062520/56816110550346895dd06aa8/html5/thumbnails/8.jpg)
Active Galactic Nuclei
• Super massive black holes• Center of Galaxy• Emit Enormous amounts of energy
http://www.mpifr-bonn.mpg.de/div/vlbi/ckp08/images/AGN/agn04.jpg>.
![Page 9: Active Galactic Nuclei](https://reader036.fdocuments.us/reader036/viewer/2022062520/56816110550346895dd06aa8/html5/thumbnails/9.jpg)
Quasars
![Page 10: Active Galactic Nuclei](https://reader036.fdocuments.us/reader036/viewer/2022062520/56816110550346895dd06aa8/html5/thumbnails/10.jpg)
Active Galactic Nuclei/Quasars
• Quasars are most important as they are the oldest, largest black holes
• Quasars spew huge amounts of radiation very far out and foster new galaxies and solar systems.
![Page 11: Active Galactic Nuclei](https://reader036.fdocuments.us/reader036/viewer/2022062520/56816110550346895dd06aa8/html5/thumbnails/11.jpg)
Ho (2002)
Found no direct relationship between radio luminosity and the mass of the black hole, contradicting previous thoughts.
![Page 12: Active Galactic Nuclei](https://reader036.fdocuments.us/reader036/viewer/2022062520/56816110550346895dd06aa8/html5/thumbnails/12.jpg)
Zhang (2003)
Concurred with Ho, didn’t find any direct relationship between RL and MBH. Claims that other factors contribute to RL.
![Page 13: Active Galactic Nuclei](https://reader036.fdocuments.us/reader036/viewer/2022062520/56816110550346895dd06aa8/html5/thumbnails/13.jpg)
Dunlop (2002)
• Determined that the relative number of Quasars can be explained in several thresholds.
• Determined that the percentage of galaxies that are active around us is about 0.1% while those active at high redshifts were active about 10% of the time.