active galactic nuclei
DESCRIPTION
Active Galactic Nuclei. Nick DiPreta. Nebula. Inside nebula are stellar nurseries Stars begin to form from the gases that are the remnants of past supernovae. Formation of an Average Black Hole. Super Massive Black Hole. Result of a galaxy merger. Super Massive Black Hole. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Active Galactic Nuclei](https://reader036.vdocuments.us/reader036/viewer/2022062222/568161e8550346895dd21845/html5/thumbnails/1.jpg)
Active Galactic Nuclei
Nick DiPreta
![Page 2: Active Galactic Nuclei](https://reader036.vdocuments.us/reader036/viewer/2022062222/568161e8550346895dd21845/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.vdocuments.us/reader036/viewer/2022062222/568161e8550346895dd21845/html5/thumbnails/3.jpg)
![Page 4: Active Galactic Nuclei](https://reader036.vdocuments.us/reader036/viewer/2022062222/568161e8550346895dd21845/html5/thumbnails/4.jpg)
Formation of an Average Black Hole
![Page 5: Active Galactic Nuclei](https://reader036.vdocuments.us/reader036/viewer/2022062222/568161e8550346895dd21845/html5/thumbnails/5.jpg)
Super Massive Black Hole
•Result of a galaxy merger
![Page 6: Active Galactic Nuclei](https://reader036.vdocuments.us/reader036/viewer/2022062222/568161e8550346895dd21845/html5/thumbnails/6.jpg)
Super Massive Black Hole
• Hubble Deep field found galaxies of irregular shape billions of lyrs away
• Ondera (2010)
![Page 7: Active Galactic Nuclei](https://reader036.vdocuments.us/reader036/viewer/2022062222/568161e8550346895dd21845/html5/thumbnails/7.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 8: Active Galactic Nuclei](https://reader036.vdocuments.us/reader036/viewer/2022062222/568161e8550346895dd21845/html5/thumbnails/8.jpg)
Quasars
![Page 9: Active Galactic Nuclei](https://reader036.vdocuments.us/reader036/viewer/2022062222/568161e8550346895dd21845/html5/thumbnails/9.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 10: Active Galactic Nuclei](https://reader036.vdocuments.us/reader036/viewer/2022062222/568161e8550346895dd21845/html5/thumbnails/10.jpg)
Ho (2002)
Found no direct relationship between radio luminosity and the mass of the black hole, contradicting previous thoughts.
![Page 11: Active Galactic Nuclei](https://reader036.vdocuments.us/reader036/viewer/2022062222/568161e8550346895dd21845/html5/thumbnails/11.jpg)
Zhang (2003)
Concurred with Ho, didn’t find any direct relationship between RL and MBH. Claims that other factors contribute to RL.
![Page 12: Active Galactic Nuclei](https://reader036.vdocuments.us/reader036/viewer/2022062222/568161e8550346895dd21845/html5/thumbnails/12.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.