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Chandra--ASCA--RXTE observations of the micro-quasar GRS 1915+105
J. C. Lee, N. S. Schulz, C. S. Reynolds +2
A Chandra AO1 30ks HETGS observation of the X-ray transient micro-quasar GRS 1915+105 reveals absorption edges and faint line emission over the HETG energy range. We find from a pr…
Broad P Cygni X-ray Lines from Circinus X-1
N. S. Schulz, W. N. Brandt
Chandra High Energy Transmission Grating Spectrometer (HETGS) observations of the extremely luminous and violent X-ray binary Cir X-1 reveal many X-ray emission lines showing broad…
Chandra Observations of Variable Embedded X-ray sources in Orion. Paper I: Resolving Orion Trapezium
N. S. Schulz, C. Canizares, D. Huenemoerder +3
We used the High Energy Transmission Grating Spectrometer (HETGS) onboard the Chandra X-ray Observatory to perform two observations, separated by three weeks, of the Orion Trapeziu…
Peculiar Extended X-ray Emission around the "Radio-Loud" Black Hole Candidate 1E1740.7-2942
Wei Cui, N. S. Schulz, F. K. Baganoff +7
We present the discovery of peculiar extended X-ray emission around 1E1740.7-2942, a black hole candidate that is known to produce prominent, persistent radio jets. The data was ob…
The Discovery of Broad P Cygni X-ray Lines from Circinus X-1 with the Chandra High Energy Transmission Grating Spectrometer
W. N. Brandt, N. S. Schulz
We present the first grating-resolution X-ray spectra of the X-ray binary Cir X-1, obtained with the High Energy Transmission Grating Spectrometer on Chandra. These reveal a rich s…
Chandra Observations of the Crab-like Supernova Remnant G21.5-0.9
Patrick Slane, Yang Chen, Norbert S. Schulz +3
Chandra observations of the Crab-like supernova remnant G21.5-0.9 reveal a compact central core and spectral variations indicative of synchrotron burn-off of higher energy electron…