We report the first unambiguous detection of X-ray emission originating from Saturn with a Chandra observation, duration 65.5 ksec with ACIS-S3. Beyond the pure detection we analyze the spatial distribution of X-rays on the planetary surface, the light curve, and some spectral properties. The detection is based on 162 cts extracted from the ACIS-S3 chip within the optical disk of Saturn. We fou...

In this document we compare event detection e ciencies in the TE mode to the ones expected in the CC(1x3) mode in the ACIS-S detector array of the HETG spectrometer on board the Chandra X-ray Observatory. Data taken in TE mode have pulse heights determined from the charge in a 3x3 pixel event island. In CC(1x3) mode, events are read out on a row by row basis, and therefore the pulse height for ...

JWST will be able to observe the atmospheres of rocky planets transiting nearby M dwarfs. The dwarf triple star system LTT 1445, at a distance 6.86 pc, hosts some nearest terrestrial planets. These most likely orbit 3.5V 1445A. During 28.6 ksec Chandra ACIS-S3 observation we have i) spatially resolved and detected all three stars in 1445 system, ii) measured X-ray luminosity individual stars, i...

Abstract We present the results of a deep study neutron star (NS) population in globular cluster M28 (NGC 6626), using full 330 ks 2002–2015 ACIS data set from Chandra X-ray Observatory and coordinated radio observations taken with Green Bank Telescope (GBT) 2015. investigate luminosity ( L X ), spectrum, orbital modulation seven known compact binary millisecond pulsars cluster. report two simu...