Distribution and Structure of Matter in and around Galaxies (2009)
Schulz, Norbert S., Allen, Glenn, Bautz, Mark W., Canizares, Claude C., Davis, John, Dewey, Dan, ...
Understanding the origins and distribution of matter in the Universe is one of the most important quests in physics and astronomy. Themes range from astro-particle physics to chemical evolution in...
Structure and Evolution of Pre-Main Sequence Stars (2009)
Schulz, Norbert S., Allen, Glenn, Bautz, Mark W., Canizares, Claude C., Davis, John, Dewey, Dan, ...
Low-mass pre-main sequence (PMS) stars are strong and variable X-ray emitters, as has been well established by EINSTEIN and ROSAT observatories. It was originally believed that this emission was of...
Suzaku Observations of the North Polar Spur: Evidence for Nitrogen Enhancement (2007)
Miller, Eric D., Tsunemi, Hiroshi, Bautz, Mark W., McCammon, Dan, Fujimoto, Ryuichi, Hughes, John P., ...
We present observations of the North Polar Spur (NPS) using the X-ray Imaging Spectrometer (XIS) aboard the Suzaku X-ray satellite. The NPS is a large region of enhanced soft X-ray and radio emission...
Suzaku Observations of the Local and Distant Hot ISM (2006)
Smith, Randall K., Bautz, Mark W., Edgar, Richard J., Hamaguchi, Kenji, Hughes, John P., Ishida, Manabu, ...
Suzaku observed the molecular cloud MBM12 and a blank field less than 3 degrees away to separate the local and distant components of the diffuse soft X-ray background. Towards MBM12, a local (D< 275...
Search for Oxygen Emission from Warm-Hot Intergalactic Medium around A2218 with Suzaku (2006)
Takei, Yoh, Ohashi, Takaya, Henry, J. Patrick, Mitsuda, Kazuhisa, Fujimoto, Ryuichi, Tamura, Takayuki, ...
We searched for redshifted O emission lines from the possible warm-hot intergalactic medium (WHIM) surrounding the cluster of galaxies A2218 at z=0.1756 using the XIS instrument on Suzaku. This...
The Evolution of Structure in X-ray Clusters of Galaxies (2005)
Jeltema, Tesla E., Canizares, Claude R., Bautz, Mark W., Buote, David A.
Using Chandra archival data, we quantify the evolution of cluster morphology with redshift. Clusters form and grow through mergers with other clusters and groups, and the amount of substructure in...
Characteristics of Diffuse X-Ray Line Emission within 20 pc of the Galactic Center (2003)
Park, Sangwook, Muno, Michael P., Baganoff, Frederick K., Maeda, Yoshitomo, Morris, Mark, Howard, Christian, ...
Over the last 3 yrs, the Galactic center (GC) region has been monitored with the Chandra X-Ray Observatory. With 11 Chandra observations through 2002 June, the total effective exposure reaches ~590...
The Evolution of Cluster Substructure with Redshift (2003)
Jeltema, Tesla E., Canizares, Claude R., Bautz, Mark W., Buote, David A.
Using Chandra archival data, we quantify the evolution of cluster morphology with redshift. To quantify cluster morphology, we use the power ratio method developed by Buote and Tsai (1995). Power...
The Evolution of Cluster Substructure (2003)
Jeltema, Tesla E., Canizares, Claude R., Bautz, Mark W., Buote, David A.
Using Chandra archival data, we have begun a study to quantify the evolution of cluster morphology with redshift. To quantify cluster morphology, we use the power ratio method developed by Buote and...
Grant, Catherine E., Prigozhin, Gregory Y., LaMarr, Beverly, Bautz, Mark W.
Soon after launch, the Advanced CCD Imaging Spectrometer (ACIS), one of the focal plane instruments on the Chandra X-ray Observatory, suffered radiation damage from exposure to soft protons during...
The temporal characteristics of the Chandra X-ray Observatory high energy particle background (2002)
Grant, Catherine E., Bautz, Mark W., Virani, Shanil N.
It was observed early on in the Chandra X-ray Observatory mission that the background rates of the Advanced CCD Imaging Spectrometer (ACIS) were highly variable on both short and long timescales. We...
Chandra X-Ray Observatory Observation of the High-Redshift Cluster MS 1054-0321 (2001)
Jeltema, Tesla E., Canizares, Claude R., Bautz, Mark W., Malm, Michael R., Donahue, Megan, Garmire, Gordon P.
We observed MS 1054-0321, the highest redshift cluster of galaxies in the Einstein Medium Sensitivity Survey (EMSS), with the Chandra ACIS-S detector. We find the X-ray temperature of the cluster to...
Chandra X-ray Observations of the Quadruply Lensed Quasar RX J0911.4+0551 (2001)
Morgan, Nicholas D., Chartas, George, Malm, Michael, Bautz, Mark W., Burud, Ingunn, Hjorth, Jens, ...
We present results from X-ray observations of the quadruply lensed quasar RX J0911.4+0551 using data obtained with the Advanced CCD Imaging Spectrometer (ACIS) on board the Chandra X-ray Observatory....