Browsing Meeting minutes, announcements and publications from RIT Colleges by Author "Gallimore, Jack"
Now showing items 1-5 of 5
-
A direct image of the obscuring disk surrounding an active galactic nucleus
Gallimore, Jack; Baum, Stefi; O'Dea, Christopher (Nature, 1997-08-28)Active galactic nuclei (AGN) are generally accepted to be powered by the release of gravitational energy in a compact accretion disk surrounding a massive black hole. Such disks are also necessary to collimate powerful ... -
The extended blue continuum and line emission around the Central Radio Galaxy in Abell 2597
Koekemoer, Anton; O'Dea, Christopher; Sarazin, Craig; McNamara, Brian; Donahue, Megan; Voit, G. Mark; Baum, Stefi; Gallimore, Jack (American Astronomical Society, 1999-11-10)We present results from detailed imaging of the centrally dominant radio elliptical galaxy in the cooling flow cluster Abell 2597, using data obtained with the Wide Field and Planetary Camera 2 (WFPC2) on the Hubble Space ... -
HI absorption in the gigamaser galaxy TXS 2226-184 and the relation between HI absorption and water emission
Taylor, Gregory; Peck, Alison; Henkel, Christian; Falcke, Heino; Mundell, Carole; O'Dea, Christopher; Baum, Stefi; Gallimore, Jack (American Astronomical Society, 2002-07-20)We report on the discovery of H i in absorption toward the gigamaser galaxy TXS 2226-184 using the Very Large Array. The absorption appears to consist of two components—one with a width of 125 km s^-1 and one broader (420 ... -
The Parsec-scale radio structure of NGC 1068 and the nature of the nuclear radio source
Gallimore, Jack; Baum, Stefi; O'Dea, Christopher (American Astronomical Society, 2004-10-01)We present sensitive, multifrequency Very Long Baseline Array (VLBA2) images of the nuclear radio sources of NGC 1068. At 5 GHz and 8.4 GHz, the radio continuum source S1, argued to mark the location of the hidden active ...