Our deep Chandra exposures of 47Tuc and moderate exposures of NGC 6397 reveal
a wealth of new phenomena for interacting X-ray binaries (IXBs) in globular
clusters. In this (late) Review, updated since the conference, I summarize
recent and ongoing analysis of the millisecond pulsars, the compact binaries
containing white dwarfs and neutron stars, and the chromospherically active
binaries in both globular clusters. Spectral variability analysis enables new
insights into source properties and evolutionary history. These binary
populations, now so ``easily'' visible, are large enough that their properties
and spatial distributions reveal new hints of compact object formation and
binary interactions with their parent cluster. Neutron stars appear
overabundant, relative to white dwarfs, in 47Tuc vs. NGC 6397. The IXBs
containing neutron stars (i.e., MSPs and qLMXBs), as the most massive and
ancient compact binary sample, may trace the protocluster disk in 47Tuc,
whereas compact binaries may have been ejected preferentially along the cluster
rotation equator during the recent core collapse in NGC 6397.Comment: 10 pages, 6 figures, presented at Cefalu Conf. on Interacting
Binarie
