We report on Bayesian parameter estimation of the mass and equatorial radius of the
millisecond pulsar PSR J0030+ 0451, conditional on pulse-profile modeling of Neutron Star …

Inference of the physical properties of stellar populations from observed photometry and
spectroscopy is a key goal in the study of galaxy evolution. In recent years, the quality and …

The coronal activity–rotation relationship is considered to be a proxy for the underlying
stellar dynamo responsible for magnetic activity in solar and late-type stars. While this has …

ABSTRACT The Fermi Large Area Telescope (Fermi-LAT, hereafter LAT), the primary
instrument on the Fermi Gamma-ray Space Telescope (Fermi) mission, is an imaging, wide …

We analyse observations of eight quiescent low-mass X-ray binaries in globular clusters and
combine them to determine the neutron star mass–radius curve and the equation of state of …

We present a comparison between weak-lensing and x-ray mass estimates of a sample of
numerically simulated clusters. The sample consists of the 20 most massive objects at …

ABSTRACT We present Chandra/ACIS-S subarray observations of the quiescent neutron
star (NS) low-mass X-ray binaries X7 and X5 in the globular cluster 47 Tuc. The large …

We present the results of the first strong lens time delay challenge. The motivation,
experimental design, and entry level challenge are described in a companion paper. This …

We report on deep Chandra observations of the nearby broad-line radio galaxy Pictor A,
which we combine with new Australia Telescope Compact Array (ATCA) observations. The …

Fitting plasma models to high-quality spectra is a crucial tool for deriving diagnostics about
the physical conditions in various astrophysical sources. Despite decades of model …