Koyama et al. present Suzaku XIS observations of the Galactic Center region. Using the observed Fe and Ni emission lines they show that the plasma is collisional and in ionization equilibrium with an Fe abundance ~3.5 times Solar.
Gregory uses a Bayesian Kepler periodogram to find a second planet orbiting HD208487.
Nagai et al. analyze simulated Chandra observations of clusters and conclude that the ISM mass is estimated correctly to better than 6% while the total gravitating mass estimate is biassed low by 5-20% due bulk motion pressure support.
Raymond et al. argue from dynamical simulations that planetary systems with "Hot Jupiters" can harbour Earth-analogs in the habitable zone.
McCarthy et al. compare WMAP3 results with baryon fractions from cluster observations and conclude that Omega_m is probably 0.28-0.39, higher than the WMAP3 best-fit value.
Centrella summarizes recent advances in numerical relativity and the calculations of BH merger gravitational waveforms.
Arzner et al. discuss the efficacy of various statistical methods in spectral fitting and advocate unbinned maximum likelihood.
Angus et al. argue that the "bullet cluster" results comparing X-ray and lensing images can be explained by a combination of MOND and 2eV neutrinos.
Paczynski proposes a number of projects using small (~10-30 cm) telescopes to look for variable objects. He also proposes a small telescope at L1 to give warning of "killer asteroids".
Stroeer et al. discuss automated Bayesian inference for LISA data analysis.
Vignali et al. select type 2 quasars on the basis of [OIII] emission then observe them with Chandra - their results support the idea that type 2 quasars are heavily absorbed in the X-ray.