Gordon P. Garmire

TL;DR: In this article, the authors collected and analyzed data taken in different spectral bands (from X-ray to optical and infrared) of the field of GRB 031220 and presented results of such multiband observations.

TL;DR: In this article, the authors reported the discovery of a probable dwarf galaxy colliding with NGC 1232, which is visible only in the X-ray spectral band, and it is creating a region of shocked gas with a temperature of 5.8 MK covering an impact area 7.25 kpc in diameter.

TL;DR: Using the highest-resolution X-ray observation of the Trumpler 15 star cluster taken by the Chandra Xray Observatory, the authors in this paper estimate the total size of its stellar population by comparing the x-ray luminosity function of the detected sources to a calibrator cluster, and identify for the first time a significant fraction of its individual members.

TL;DR: The recent restructuring of the AXAF program has necessitated a review of the design of the ACIS instrument as discussed by the authors, and the current status of these design activities is reported in this paper, focusing on changes to the baseline CCD and its impact on aspects such as the operating modes.