12 papers · 1 filter
Galaxy Clusters and Dark Matter Properties
J. S. Arabadjis, M. W. Bautz
Laboratory experiments, large-scale computer simulations and observational cosmology have begun to make progress in the campaign to identify the particle responsible for gravitatio…
Mass Profiles of Galaxy Cluster Cores: Implications for Structure Formation and Self-Interacting Dark Matter
J. S. Arabadjis, M. W. Bautz
We present a spectroscopic deprojection analysis of a sample of ten relaxed galaxy clusters. We use an empirical F-test derived from a set of Markov Chain Monte Carlo simulations t…
The Spectra and Variability of X-ray Sources in a Deep Chandra Observation of the Galactic Center
M. P. Muno, J. S. Arabadjis, F. K. Baganoff +7
We examine the X-ray spectra and variability of the sample of X-ray sources with L_X = 10^{31}-10^{33} erg s^{-1} identified within the inner 9' of the Galaxy. Very few of the sour…
Small-Scale structure in the Galactic ISM: Implications for Galaxy Cluster Studies
Joel N. Bregman, Megan C. Novicki, Jessica E. Krick +1
Observations of extragalactic objects need to be corrected for Galactic absorption and this is often accomplished by using the measured 21 cm HI column. However, within the beam of…
Constraining Multiphase Gas in Cooling Flows
J. S. Arabadjis, M. W. Bautz
We present a spectral analysis of the central X-ray emission for a sample of galaxy clusters observed with Chandra. We constrain the quantity of a second cospatial temperature comp…
The X-ray Binary GRS 1741.9-2853 in Outburst and Quiescence
M. P. Muno, F. K. Baganoff, J. S. Arabadjis
We report Chandra and XMM-Newton observations of the transient neutron star low-mass X-ray binary GRS 1741.9-2853. Chandra detected the source in outburst on 2000 October 26 at an…