4 papers
The Chandra Deep Protocluster Survey: Ly-alpha Blobs are powered by heating, not cooling
J. E. Geach, D. M. Alexander, B. D. Lehmer +11
We present the results of a 400ks Chandra survey of 29 extended Ly-alpha emitting nebulae (Ly-alpha Blobs, LABs) in the z=3.09 proto-cluster in the SSA22 field. We detect luminous…
New Worlds: Evaluating terrestrial planets as astrophysical objects
Caleb A. Scharf, David S. Spiegel, Mark Chandler +4
Terrestrial exoplanets are on the verge of joining the ranks of astronomically accessible objects. Interpreting their observable characteristics, and informing decisions on instrum…
A low-redshift galaxy cluster X-ray Temperature Function incorporating Suzaku data
Cien Shang, Caleb Scharf
We present the first results of a survey of 14 low redshift galaxy clusters using Suzaku. Although luminous (L_x> 1\times 10^{43} erg s^{-1} (0.1-2.4 keV)), these clusters have no…
A possible dearth of hot gas in galaxy groups at intermediate redshift
David S. Spiegel, Frits Paerels, Caleb A. Scharf
We examine the X-ray luminosity of galaxy groups in the CNOC2 survey, at redshifts 0.1 < z < 0.6. Previous work examining the gravitational lensing signal of the CNOC2 groups has s…