On the recurrence times of neutron star X-ray binary transients and the nature of the Galactic Centre quiescent X-ray binaries

ABSTRACT The presence of some X-ray sources in the Galactic Centre region which show variability, but do not outbursts over a decade monitoring has been used to argue for large population stellar mass black holes this region. A core element arguments that these objects are accreting is claim neutron stars (NSs) low-mass binaries (LMXBs) have long transient recurrence times. We demonstrate paper about half known LMXBs with clear signatures NS primaries times excess at sensitivity MAXI. furthermore that, order reconcile expected total observed one and millisecond radio pulsar (MSRP) Galaxy, systems well century detectable by instruments like MAXI must be dominant LMXBs, few yet discovered.