PDF-(READ)-Quasars and Active Galactic Nuclei: An Introduction

This book provides an uptodate and comprehensive account of quasars and active galactic nuclei AGN The latest observations and theoretical models are combined in this clear pedagogic textbook for advanced undergraduates and graduate students Researchers will also find this wideranging and coherent review invaluable Throughout detailed derivations of important results are provided to ensure the book is self contained And theories and models are critically compared with detailed and often puzzling observations from across the spectrum We are led through all the key topics including quasar surveys continuum radiation time variability relativistic beaming accretion disks jet sidedness gravitational lensing unification and detailed multiwavelength studies of individual objects Particular emphasis is placed on radio X and gammaray observationsnot covered in depth in any previous book All those entering into this exciting and dynamic area of astronomy research will find this book an ideal introduction. The Xray absorbing gas is often called a warm absorber because UV observations show that it is accompanied by very weak or no signi64257cant absorption at the H I Lyman limit 912 A The gas must be substantially ionized much more H II than H I and he Lesson Objectives. To appreciate that some galaxies emit far more energy at some wavelengths that can be explained simply in terms of ‘starlight’.. To recall the types of active galaxies.. To show an understanding of the mechanism for producing large quantities of radiation from active galaxies.. :. Active Galactic Nuclei: powerful energy sources in . “nuclei” . (. central ~1 pc) . of some galaxies. Main types. : . Seyferts. , radio galaxies and quasars. Other variants we’ll skip.. Power source: accretion of matter onto a supermassive black . Yue . Shen. Carnegie Observatories. In collaboration with Brandon . Kelly (UCSB). M. otivation. T. he abundance (and clustering) of quasars are key to understand the evolution of quasars/SMBHs in the hierarchical structure formation paradigm . sun = Nuclear landscape. General . principles. Nuclear structure I (preliminaries). Witek. . Nazarewicz (UTK/. ORNL. ). National Nuclear Physics Summer School . 2014. William & Mary, VA. nuclear structure & reactions. February 9, 2013. @ 11:00 am. T. he unusually bright centers found in some galaxies are called . a. ctive galactic nuclei.. s. tarbursts.. h. alos.. s. upermassive. black holes.. According to current understanding, what is a quasar?. with the . Jansky. Very Large Array. Rick . Perley. NRAO -- Socorro. Goals of This Presentation. Introduce the . Jansky. Very Large Array (7 slides). A major upgrade of the VLA. H. ow does a radio interferometer do . M87. Hercules A radio jets. Active Galactic Nuclei (AGNs) and Supermassive Black Holes. The identification by Maarten Schmidt (1963, . Nature. , 197, 1040) of the radio source 3C 273 as a . “. star. Most of the power of galaxies come from the stars. Almost all nearby galaxies. Some galaxies have very bright sources right at the center. Can be as bright as a galaxy!. Or even much brighter. Called . These are called . active. . galaxies. .. . Active Galaxies and Quasars. By looking far away and back in time, astronomers have discovered:. The origin of active galaxy energy sources and outbursts were closely related to the formation and history of galaxies.. Gordon Richards. Drexel University. With thanks to. Michael Strauss, . Yue. . Shen. (Princeton), Don Schneider, Nic Ross (Penn State), Adam . Myers (Illinois. ), Phil Hopkins (. Berkeley. ), . and a host of other people from the SDSS Collaboration. from nearby galactic . and . nearest AGN sources. by . D.Fargion. , . P.Oliva. , Rome1,Italy. presented . by Marco . Casolino. , Rome 2, Italy. Sorry. to . not. be . here. : . but. . today. . it. Maurizio . Spurio, . maurizio.spurio@unibo.it. . Università. di Bologna e INFN. 1. M. Spurio - Galactic template neutrino searches. Propagation induces accidents. M. Spurio - Galactic template neutrino searches.