Browsing by Author "Lehmer, B.D."

Now showing items 1-3 of 3

    • A 100 kpc inverse Compton x-ray halo around 4C 60.07 at z = 3.79 

      Smail, I.; Lehmer, B.D.; Ivison, R.J.; Alexander, D.M.; Bower, R.; Stevens, J. A.; Geach, James; Scharf, C.; Coppin, Kristen; van Breugel, W. (2009)
      We analyze a 100 ks Chandra observation of the powerful radio galaxy, 4C 60.07 at z = 3.79. We identify extended X-ray emission with L X ~ 1045 erg s–1 across a ~90 kpc region around the radio galaxy. The energetics of ...

    • An ALMA Survey of Submilleter Galaxies in the Extended Chandra Deep Field-South : The AGN Fraction and X-Ray Properties of Submillimeter Galaxies 

      Wang, S.X.; Brandt, W. N.; Luo, B.; Smail, I.; Alexander, D.M.; Danielson, A. L. R.; Hodge, J. A.; Karim, A.; Lehmer, B.D.; Simpson, James; Swinbank, A.M.; Walter, Fabian; Wardlow, Julie; Xue, Y. Q.; Chapman, S.; Coppin, Kristen; Dannerbauer, H.; De Breuck, Carlos; Menten, K. M.; van der Werf, P. (2013)
      The large gas and dust reservoirs of submillimeter galaxies (SMGs) could potentially provide ample fuel to trigger an active galactic nucleus (AGN), but previous studies of the AGN fraction in SMGs have been controversial ...

    • Concurrent supermassive black hole and galaxy growth : linking environment and nuclear activity in z=2.23 alpha emitters 

      Lehmer, B.D.; Lucy, A. B.; Alexander, D.M.; Best, P.N.; Geach, J. E.; Harrison, C. M.; Hornschemeier, A. E.; Matsuda, Y.; Mullaney, J. R.; Smail, Ian; Sobral, D.; Swinbank, A.M. (2013-03-10)
      We present results from a approximate to 100 ks Chandra observation of the 2QZ Cluster 1004+00 structure at z = 2.23 (hereafter 2QZ Clus). 2QZ Clus was originally identified as an overdensity of four optically-selected ...