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Powerful Outflows and Feedback from Active Galactic Nuclei
Pounds, Ken; King, Andrew
Active galactic nuclei (AGNs) represent the growth phases of the supermassive black holes in the center of almost every galaxy. Powerful, highly ionized winds, with velocities â¼0.1-0.2c, are a common feature in X-ray spectra of luminous AGNs, offering a plausible physical origin for the well-known connections between the hole and properties of it…
Ideas for Citizen Science in Astronomy
Fletcher, Leigh N.; Marshall, Philip J.; Lintott, Chris J.
We review the expanding, internet-enabled, and rapidly evolving field of citizen astronomy, focusing on research projects in stellar, extragalactic, and planetary science that have benefited from the participation of members of the public. These volunteers contribute in various ways: making and analyzing new observations, visually classifying feat…