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Evidence for Accretion: High-Resolution X-Ray Spectroscopy of the Classical T Tauri Star TW Hydrae
We present high-resolution X-ray spectra of the X-ray-bright classical T Tauri star, TW Hydrae, covering the wavelength range of 1.5-25 A. The differential emission measure derived from fluxes of
The Chandra High Energy Transmission Grating: Design, Fabrication, Ground Calibration and Five Years in Flight
United States. National Aeronautics and Space Administration. George C. Marshall Space Flight Center (Contract NAS8-38249)
Initial Results From The Chandra High Energy Transmission Grating Spectrometer
The High Energy Transmission Grating Spectrometer (HETGS) on the Chandra Xray Observatory provides spectral resolving powers of 200-1000 over the range 0.4-8.0 keV (1.5-30 A ) with e ective area of
Raytracing with MARX: x-ray observatory design, calibration, and support
MARX is a portable ray-trace program that was originally developed to simulate event data from the trans- mission grating spectrometers on-board the Chandra X-ray Observatory (CXO). MARX has since
The High-Resolution X-Ray Spectrum of SS 433 Using the Chandra HETGS
We present observations of SS 433 using the Chandra High Energy Transmission Grating Spectrometer. Many emission lines of highly ionized elements are detected with relativistic blue and red Doppler
Chandra Observations of the Young Pulsar PSR B0540–69
The young pulsar PSR B0540-69 was one of the first targets observed with the Chandra X-Ray Observatory. The high angular resolution of Chandra allows us to resolve the compact nebula surrounding the
Chandra ACIS Subpixel Event Repositioning: Further Refinements and Comparison between Backside- and Frontside-illuminated X-Ray CCDs
We further investigate subpixel event repositioning (SER) algorithms in application to Chandra X-Ray Observatory (Chandra) CCD imaging. SER algorithms have been applied to backside-illuminated (BI)
XMM-Newton observations of PSR B1823-13 : an asymmetric synchrotron nebula around a Vela-like pulsar
We present a deep observation with the X-Ray Multimirror Mission of PSR B1823-13, a young pulsar with similar properties to the Vela pulsar. We detect two components to the X-ray emission associated
A Chandra Survey of Fluorescence Fe Lines in X-ray Binaries at High Resolution
Fe K line fluorescence is commonly observed in the X-ray spectra of many X-ray binaries (XRBs) and represents a fundamental tool to investigate the material surrounding the X-ray source. In this
X-Ray Spectroscopy of II Pegasi: Coronal Temperature Structure, Abundances, and Variability
We have obtained high-resolution X-ray spectra of the coronally active binary II Pegasi (HD 224085), covering the wavelength range of 1.5-25 A. For the first half of our 44 ks observation, the source