![]() |
|
Figure 3: Evidence for the existence of the ISCO from data recorded by the Rossi X-ray Timing
Explorer satellite from neutron star binary source 4U 1636–536 [33]. The source shows quasi-periodic
oscillations (QPOs) with frequencies in the range
. The sharp drop in the
quality factor (bottom panel) seen at may be attributable to the ISCO [34]. |


. The sharp drop in the
quality factor (
may be attributable to the ISCO 