The Star Formation and Nuclear Accretion Histories of Normal Galaxies in the AGES Survey (2009)
Watson, Casey R., Kochanek, Christopher S., Forman, William R., Hickox, Ryan C., Jones, Christine J., Brown, Michael J. I., ...
We combine IR, optical and X-ray data from the overlapping, 9.3 square degree NOAO Deep Wide-Field Survey (NDWFS), AGN and Galaxy Evolution Survey (AGES), and XBootes Survey to measure the X-ray...
Strong Upper Limits on Sterile Neutrino Warm Dark Matter (2007)
Yuksel, Hasan, Beacom, John F., Watson, Casey R.
Sterile neutrinos are attractive dark matter candidates. Their parameter space of mass and mixing angle has not yet been fully tested despite intensive efforts that exploit their gravitational...
Direct X-ray Constraints on Sterile Neutrino Warm Dark Matter (2006)
Watson, Casey R., Beacom, John F., Yuksel, Hasan, Walker, Terry P.
Warm dark matter (WDM) might more easily account for small scale clustering measurements than the heavier particles typically invoked in Lambda cold dark matter (LCDM) cosmologies. In this paper, we...
Tracing the Nuclear Accretion History of the Red Galaxy Population (2005)
Brand, Kate, Dey, Arjun, Brown, Michael J. I., Watson, Casey R., Jannuzi, Buell T., Najita, Joan R., ...
We investigate the evolution of the hard X-ray luminosity of the red galaxy population using a large sample of 3316 red galaxies selected over a wide range in redshift (0.3
What are the environments of lens galaxies? (2004)
Using measured tangential shear profiles and number counts of massive elliptical galaxies, the halo occupation distribution of strong lensing galaxies is constrained. The resulting HOD is then used...
The Evolution of Inverse Power Law Quintessence at Low Redshift (2003)
Watson, Casey R., Scherrer, Robert J.
Quintessence models based on a scalar field, phi, with an inverse power law potential display simple tracking behavior at early times, when the quintessence energy density, rho_phi, is sub-dominant....
Investigating the Formation of Extra-Galactic Radio Jets (1998)
Jets of collimated particles are among the most intriguing characteristics of active galactic nuclei. In this paper two models of particle interactions in active galactic nuclei are used to explore a...