The Galactic center is one of the most fascinating and extreme places in the Galaxy. Harboring a supermassive black hole with a mass of order 4 million solar masses it experiences cycles of activity and star formation, separated by periods of quiescence that last of order a million years. The...
The development of virial mass estimates for the central black hole using one quasar spectrum has allowed a dramatic improvement in our understanding of supermassive black hole evolution. I will describe several new puzzles arising from the combination of virial masses with luminosity and redshift measurements, many of which are...
The assembly and evolution of galaxies over cosmic time is a complex process. Historically, galaxy evolution was thought to be governed by mainlystochastic, potentially divergent processes such as major mergers, whichwere linked to active galactic nuclei (AGN) activity and vigorous starformation followed by a rapid "quenching" process. In the last...
The development of virial mass estimates for the central black hole using one quasar spectrum has allowed a dramatic improvement in our understanding of supermassive black hole evolution. I will describe several new puzzles arising from the combination of virial masses with luminosity and redshift measurements, many of which are...
Since about 2005 our group at the ANU, in collaboration with Alex Wagner, has been conducting fundamental research on the interaction of jets with the interstellar medium of evolving galaxies. One area of research involves the interaction of relativistic jets with an inhomogeneous interstellar medium consisting of dense clouds. This...
The Galactic center is one of the most fascinating and extreme places in the Galaxy. Harboring a supermassive black hole with a mass of order 4 million solar masses it experiences cycles of activity and star formation, separated by periods of quiescence that last of order a million years. The...
February 2014 17 : 00 hydrodynamics, G2, clouds, Galactic center, SMBH, AGN, and accretion discs
The development of virial mass estimates for the central black hole using one quasar spectrum has allowed a dramatic improvement in our understanding of supermassive black hole evolution. I will describe several new puzzles arising from the combination of virial masses with luminosity and redshift measurements, many of which are...
August 2013 15 : 00 quasars, SMBH, and AGN
The assembly and evolution of galaxies over cosmic time is a complex process. Historically, galaxy evolution was thought to be governed by mainlystochastic, potentially divergent processes such as major mergers, whichwere linked to active galactic nuclei (AGN) activity and vigorous starformation followed by a rapid "quenching" process. In the last...
August 2013 16 : 20 quasars, SMBH, and AGN The development of virial mass estimates for the central black hole using one quasar spectrum has allowed a dramatic improvement in our understanding of supermassive black hole evolution. I will describe several new puzzles arising from the combination of virial masses with luminosity and redshift measurements, many of which are...
August 2013 15 : 40 quasars, SMBH, and AGN
Since about 2005 our group at the ANU, in collaboration with Alex Wagner, has been conducting fundamental research on the interaction of jets with the interstellar medium of evolving galaxies. One area of research involves the interaction of relativistic jets with an inhomogeneous interstellar medium consisting of dense clouds. This...
July 2013 14 : 00 AGN, AGN feedback, AGN jets, SMBH, M-sigma relation, MHD, accretion discs, radio galaxies, and Hydra A
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