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Heating in an Extended Accretion Disk Corona along the Z-Pattern in Cyg X-2
N. S. Schulz, D. P. Huenemoerder, L. Ji +3
We observed at very high spectral resolution the prototype Z-source Cyg x-2 twice along its entire X-ray spectral variation pattern. In this preliminary analysis we find an extende…
Multi-Satellite Observations of Cygnus X-1 to Study the Focused Wind and Absorption Dips
Manfred Hanke, Joern Wilms, Moritz Boeck +4
High-mass X-ray binary systems are powered by the stellar wind of their donor stars. The X-ray state of Cygnus X-1 is correlated with the properties of the wind which defines the e…
Disk Dominated States of 4U 1957+11: Chandra, XMM, and RXTE Observations of Ostensibly the Most Rapidly Spinning Galactic Black Hole
Michael A. Nowak, Adrienne Juett, Jeroen Homan +4
We present simultaneous Chandra-HETG and RXTE observations of a moderate flux `soft state' of the black hole candidate 4U1957+11. These spectra, having a minimally discernible hard…
Chandra X-ray spectroscopy of the focused wind in the Cygnus X-1 system. I. The non-dip spectrum in the low/hard state
Manfred Hanke, Joern Wilms, Michael A. Nowak +3
We present analyses of a 50 ks observation of the supergiant X-ray binary system Cygnus X-1/HDE 226868 taken with the Chandra High Energy Transmission Grating Spectrometer (HETGS).…
X-ray Emission from Young Stellar Objects in the εChamaeleontis Group: the Herbig Ae Star HD 104237 and Associated Low-Mass Stars
Paola Testa, David P. Huenemoerder, Norbert S. Schulz +1
We present Chandra-HETGS observations of the Herbig Ae star HD 104237 and the associated young stars comprising lower mass stars, in the 0.15-1.75\msol mass range, in their pre-mai…
Modeling the SS 433 Jet Bends
Herman L. Marshall, Claude R. Canizares, Norbert S. Schulz +3
We fit Chandra HETGS data obtained for the unusual X-ray binary SS 433. While line strengths and continuum levels hardly change, the jet Doppler shifts show aperiodic variations th…