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J.C. Raymond (CfA)
The CHANDRA and XMM satellites open up the possibility of detailed spectroscopy of Low Mass X-ray Binaries. Accretion disk coronae can be formed by photoionization and Compton heating by photons from near the neutron star, or the accretion flow may take the form of a low density Advection Dominated Accretion flow. In either case, a wind may drastically modify the structure. X-ray spectral lines and recombination contiua provide several clear signatures of different kinds of coronae.