A large population of neutron star low-mass X-ray binaries with long outburst recurrence time ?
arXiv:2406.02020 · doi:10.1093/mnras/stae1056
Abstract
Low-mass X-ray binaries (LMXBs) with neutron stars show quite different features which depend on the rate of mass transfer from the donor star. With a high transfer rate the Z sources are in a persistent soft spectral state, with a moderate rate the transient Atoll sources have outburst cycles like the black hole X-ray binaries. The observations document very long outburst recurrence times for quite a number of sources. We follow with our computations the evolution of the accretion disc until the onset of the ionization instability. For sources with a low mass transfer rate the accumulation of matter in the disc is essentially reduced due to the continuous evaporation of matter from the disc to the coronal flow. Different mass transfer rates result in nearly the same amount of matter accumulated for the outburst which means the outburst properties are similar for sources with short and sources with long outburst cycles, contrary to some expectations. Then of systems with long recurrence time less sources will be detected and the total population of LMXBs could be larger than it appears. This would relieve the apparent problem that the observed number of LMXBs as progenitors of millisecond pulsars (MSP) is too small compared to the number of MSP. Concerning the few quasi-persistent sources with year-long soft states we argue that these states are not outbursts, but quasi-stationary hot states as in Z sources.
arXiv comment7 pages, 4 figures, published in MNRAS
References in corpus (35)
- Hot Accretion Flows Around Black Holes
- Masses, Radii, and Equation of State of Neutron Stars
- The disc instability model of dwarf-novae and low-mass X-ray binary transients
- Thermonuclear (type-I) X-ray bursts observed by the Rossi X-ray Timing Explorer
- The disc instability model for X-ray transients: evidence for truncation and irradiation
- WATCHDOG: A Comprehensive All-Sky Database of Galactic Black Hole X-ray Binaries
- Black Hole and Neutron Star Transients in Quiescence
- Detecting gravitational wave emission from the known accreting neutron stars
- Black hole-like hysteresis and accretion states in neutron star low mass X-ray binaries
- XTE J1701-462 and its Implications for the Nature of Subclasses in Low-Magnetic-Field Neutron Star Low-Mass X-Ray Binaries
- Evaporation of accretion disks around black holes: the disk-corona transition and the connection to the advection-dominated accretion flow
- RXTE observations of the first transient Z source XTE J1701-462: shedding new light on mass accretion in luminous neutron star LMXBs
- Where May Ultra-Fast Rotating Neutron Stars Be Hidden?
- Accreting Millisecond X-Ray Pulsars
- Why Low-Mass Black-Hole Binaries Are Transient
- X-ray outbursts of low-mass X-ray binary transients observed in the RXTE era
- NuSTAR Observations of the Accreting Atolls GX 3+1, 4U 1702-429, 4U 0614+091, and 4U 1746-371
- The accretion flow to the intermittent accreting ms pulsar, HETE J1900.1-2455, as observed by XMM-Newton and RXTE
- An in-depth study of a neutron star accreting at low Eddington rate: On the possibility of a truncated disk and an outflow
- The Low Quiescent X-Ray Luminosity of the Neutron Star Transient XTE J2123-058
- A Chandra observation of the neutron star X-ray transient and eclipsing binary MXB 1659-29 in quiescence
- Mining the Aql X-1 long term X-ray light curve
- Does the thermal disc instability operate in active galactic nuclei?
- Transient X-ray Binaries in Elliptical Galaxies
- The neutron star soft X-ray transient 1H1905+000 in quiescence
- Analytical solution for the evolution of a binary with stable mass transfer from a giant
- A cooling neutron star crust after recurrent outbursts: Modelling the accretion outburst history of Aql X-1
- Indications of non-conservative mass-transfer in AMXPs
- A possible solution of the puzzling variation of the orbital period of MXB 1659-298
- Broadband spectral analysis of MXB 1659-298 in its soft and hard state
- A strongly changing accretion morphology during the outburst decay of the neutron star X-ray binary 4U 1608-52
- The relation between outburst rate and orbital period in low-mass X-ray binary transients
- Constraining the properties of dense neutron star cores: The case of the low-mass X-ray binary HETE J1900.1-2455
- On the recurrence times of neutron star X-ray binary transients and the nature of the Galactic Centre quiescent X-ray binaries
- Hard-tail emission in the soft state of low-mass X-ray binaries and their relation to the neutron star magnetic field