17 papers
An X-Ray Pulsar, Metal-rich Ejecta, and Shocked Ambient Medium in the Supernova Remnant G292.0+1.8
John P. Hughes, Robert B. Friedman, Patrick Slane +1
We report the discovery of pulsed X-ray emission from the compact object CXOU J112439.1-591620 within the Galactic supernova remnant G292.0+1.8 using the High Resolution Camera on…
Relativistic Outflows in Active Galactic Nuclei
N. Vlahakis, A. Konigl
There are observational indications that relativistic outflows in AGNs are accelerated over distances that far exceed the scale of the central engine. Examples include the radio ga…
Sgr A* and Sgr A East: Intimate Life in the Galactic Center
Tomek Plewa, Michal Rozyczka
A hydrodynamic interaction between an old supernova remnant and a massive black hole is studied with the help of a high-resolution adaptive mesh refinement code. A series of multid…
A Measurement of the Three-Dimensional Clustering of C IV Absorption-Line Systems on Scales of 5 to 300 Mpc
Ji Meng Loh, Jean M. Quashnock, Michael L. Stein
We examine the three-dimensional clustering of C IV absorption-line systems, using an extensive catalog of QSO heavy-element absorbers drawn from the literature. We measure cluster…
Damped Lyman alpha systems at z=0.68 and z=1.15 towards HE 1122-1649 and HE 0515-4414
A. de la Varga, D. Reimers, D. Tytler +2
Detailed analysis of the spectral lines from two low redshift damped Lyman alpha absorbers (DLA) confirms that they are a heterogeneous population. Both systems have low metal abun…
Estimating the K-function of a point process with an application to cosmology
Michael L. Stein, Jean M. Quashnock, Ji Meng Loh
Motivated by the study of an important data set for understanding the large-scale structure of the universe, this work considers the estimation of the reduced second moment functio…