The binary evolution of SAX J1808.4−3658: implications of an evolved donor star

@article{Goodwin2020TheBE,
  title={The binary evolution of SAX J1808.4−3658: implications of an evolved donor star},
  author={Adelle Goodwin and T. E. Woods School of Physics and Astronomy and Monash University and National Research Council Canada and Herzberg AstronomyAstrophysics Research Centre},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2020}
}
Observations of the accretion powered millisecond pulsar SAX J1808.4−3658 have revealed an interesting binary evolution, with the orbit of the system expanding at an accelerated rate. We use the recent finding that the accreted fuel in SAX J1808.4−3658 is hydrogen depleted to greatly refine models of the progenitor and prior evolution of the binary system. We constrain the initial mass of the companion star to 1.0–1.2 M⊙, more massive than previous evolutionary studies of this system have… 

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References

SHOWING 1-10 OF 46 REFERENCES

Evolutionary paths of binaries with a neutron star. I. The case of SAX J1808.4-3658

The evolutionary status of the low mass X-ray binary SAX J1808.4-3658 is simulated by following the binary evolution of its possible progenitor system through mass transfer, starting at a period of

Magnetic-driven Orbital Evolution of an Accreting Millisecond Pulsar: Witnessing the Banquet of a Hidden Black Widow

We report here on the orbital evolution of the accreting millisecond pulsar SAX J1808.4{3658. In particular, we nd for this source the rst estimate of the orbital period derivative in an accreting

Revised Orbital Parameters of the Accreting Millisecond Pulsar SAX J1808.4–3658

We present a temporal analysis of the three outbursts of the X-ray millisecond pulsar SAX J1808.4-3658 that occurred in 1998, 2000, and 2002. With a technique that uses the χ2 obtained with an

An evolutionary channel towards the accreting millisecond pulsar SAX J1808.4−3658

Recent timing analysis reveals that the orbital period of the first discovered accreting millisecond pulsar SAX J1808.4-3658 is increasing at a rate $\dot{P}_{\rm orb}=(3.89\pm0.15)\times

A DECADE OF TIMING AN ACCRETION-POWERED MILLISECOND PULSAR: THE CONTINUING SPIN DOWN AND ORBITAL EVOLUTION OF SAX J1808.4-3658

The Rossi X-ray Timing Explorer has observed five outbursts from the transient 2.5 ms accretion-powered pulsar SAX J1808.4−3658 during 1998–2008. We present a pulse timing study of the most recent

The Optical Counterpart of the Accreting Millisecond Pulsar SAX J1808.4–3658 in Outburst: Constraints on the Binary Inclination

We present multiband optical/IR photometry of V4580 Sgr, the optical counterpart of the accretion-powered millisecond pulsar SAX J1808.4-3658, taken during the 1998 X-ray outburst of the system. The

EVOLUTIONARY SEQUENCES FOR LOW- AND INTERMEDIATE-MASS X-RAY BINARIES

We present the results of a systematic study of the evolution of low- and intermediate-mass X-ray binaries (LMXBs and IMXBs). Using a standard Henyey-type stellar evolution code and a standard model

A Brown Dwarf Companion for the Accreting Millisecond Pulsar SAX J1808.4–3658

The BeppoSAX Wide Field Cameras have revealed a population of faint neutron star X-ray transients in the Galactic bulge. King conjectured that these neutron stars are accreting from brown dwarfs with

A NICER Thermonuclear Burst from the Millisecond X-Ray Pulsar SAX J1808.4–3658

The Neutron Star Interior Composition Explorer (NICER) has extensively monitored the 2019 August outburst of the 401 Hz millisecond X-ray pulsar SAX J1808.4–3658. In this Letter, we report on the

Swings between rotation and accretion power in a binary millisecond pulsar

Observations of accretion-powered, millisecond X-ray pulsations from a neutron star previously seen as a rotation- powered radio pulsar show the evolutionary link between accretion and rotation-powered millisecond pulsars, but also that some systems can swing between the two states on very short timescales.