High-Resolution X-Ray Spectroscopy of the Accretion Disk Corona Source 4U 1822−37
The Astrophysical Journal2001Vol. 557(2), pp. L101–L104
Citations Over TimeTop 14% of 2001 papers
Abstract
We present a preliminary analysis of the X-ray spectrum of the accretion disk corona source, 4U 1822-37, obtained with the High Energy Transmission Grating Spectrometer onboard the Chandra X-ray Observatory. We detect discrete emission lines from photoionized iron, silicon, magnesium, neon, and oxygen, as well as a bright iron fluorescence line. Phase-resolved spectroscopy suggests that the recombination emission comes from an X-ray illuminated bulge located at the predicted point of impact between the disk and the accretion stream. The fluorescence emission originates in an extended region on the disk that is illuminated by light scattered from the corona.
Related Papers
- → Liquid-vapour equilibrium in the system neon-nitrogen(1965)35 cited
- → Liquid-Vapor Phase Equilibria of the Neon-Normal Hydrogen System(1966)16 cited
- → Theoretical investigation of structures, compositions, and phase transitions of neon hydrates based on ices Ih and II(2014)6 cited
- → Desorption Behavior of Quench-Condensed Argon-Neon Mixtures(2001)3 cited
- → Cataphoretic Purification of Neon(1964)11 cited