Jee et al. use weak-lensing analysis of Cl0024+17 and find a ring of dark matter which they interpret as the result of a high-velocity line-of-sight collision.
Tsalmantza et al. present the first results from a program to generate a library of synthetic galaxy spectra to be used to classify the several million unresolved galaxies whose spectra will be acquired by Gaia.
Wu & Wang calculate Fe K line shapes from relativistic accreting disks including the effects of self-shadowing.
Tornatore et al. use hydro simulations to investigate chemical evolution in clusters of galaxies.
Trimble et al. summarize astrophysics in 2006.
Padmanabhan reviews dark energy cosmology, argues that only a cosmological constant makes sense and that the problem cannot be satisfactorily solved at our current level of (mis)understanding.
Fiore et al. combine optical, IR, and X-ray observations of the Chandra Deep Field South to identify the Compton-thick AGN that have so far been missing from deep Chandra observations.
Kelly describes a Bayesian approach using Gaussian mixtures for linear regression in the presence of measurement errors, non-detections, and selection effects.
Eckert et al. analyze a 1.1Ms Integral ISGRI observation of the Coma cluster to find an extended hard X-ray excess in the direction of the infalling cluster A1376.
Sanders & Fabian continue their analysis of the very deep Chandra observation of the Perseus cluster finding a) the ripples interpreted as sound waves carry a significant fraction of the energy lost to radiative cooling b) the distribution of metals peaks at 40 kpc and is clumpy on scales of 5 kpc c) there is no evidence for thermal emission from the radio bubbles.
Repin et al. give analytic approximations for the relativistic Fe K line shape from accretion disks. A table is available.