The efficiency of nuclear burning during thermonuclear (Type I) bursts as a function of accretion rate

@article{Cavecchi2020TheEO,
  title={The efficiency of nuclear burning during thermonuclear (Type I) bursts as a function of accretion rate},
  author={Y. Cavecchi and Duncan K. Galloway and A J Goodwin and Zac Johnston and Alexander Heger},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2020},
  volume={499},
  pages={2148-2156}
}
We measured the thermonuclear burning efficiency as a function of accretion rate for the Type I X-ray bursts of five low-mass X-ray binary systems. We chose sources with measured neutron star spins and a substantial population of bursts from a large observational sample. The general trend for the burst rate is qualitatively the same for all sources; the burst rate first increases with the accretion rate up to a maximum, above which the burst rate declines, despite the increasing accretion rate… Expand

Figures and Tables from this paper

Thermonuclear X-Ray Bursts with Late Secondary Peaks Observed from 4U 1608–52
We report the temporal and spectral analysis of three thermonuclear X-ray bursts from 4U 1608−52, observed by the Neutron Star Interior Composition Explorer (NICER) during and just after the outburstExpand

References

SHOWING 1-10 OF 76 REFERENCES
On the Dependence of the X-Ray Burst Rate on Accretion and Spin Rate
Nuclear burning and its dependence on the mass accretion rate are fundamental ingredients for describing the complicated observational phenomenology of neutron stars (NSs) in binary systems.Expand
Reaction rate and composition dependence of the stability of thermonuclear burning on accreting neutron stars
The stability of thermonuclear burning of hydrogen and helium accreted onto neutron stars is strongly dependent on the mass accretion rate. The burning behavior is observed to change from Type IExpand
THERMONUCLEAR STABILITY OF MATERIAL ACCRETING ONTO A NEUTRON STAR
We present a global linear stability analysis of nuclear fuel accumulating on the surface of an accreting neutron star, and we identify the conditions under which thermonuclear bursts are triggered.Expand
The Influence of Stellar Spin on Ignition of Thermonuclear Runaways
Runaway thermonuclear burning of a layer of accumulated fuel on the surface of a compact star provides a brief but intense display of stellar nuclear processes. For neutron stars accreting from aExpand
The influence of accretion rate and metallicity on thermonuclear bursts: predictions from KEPLER models
Using the KEPLER hydrodynamics code, 464 models of thermonuclear X-ray bursters were performed across a range of accretion rates and compositions. We present the library of simulated burst profilesExpand
The influence of accretion geometry on the spectral evolution during thermonuclear (type I) X-ray bursts
Neutron star (NS) masses and radii can be estimated from observations of photospheric radius-expansion X-ray bursts, provided the chemical composition of the photosphere, the spectralExpand
Simulating X-ray bursts during a transient accretion event
Modelling of thermonuclear X-ray bursts on accreting neutron stars has to date focused on stable accretion rates. However, bursts are also observed during episodes of transient accretion. During suchExpand
The effect of rotation on the stability of nuclear burning in accreting neutron stars
Hydrogen and/or helium accreted by a neutron star from a binary companion may undergo thermonuclear fusion. Different burning regimes are discerned at different mass accretion rates. TheoreticalExpand
Thermonuclear (Type I) X-Ray Bursts Observed by the Rossi X-Ray Timing Explorer
We have assembled a sample of 1187 thermonuclear (type I) X-ray bursts from observations of 48 accreting neutron stars by the Rossi X-ray Timing Explorer, spanning more than 10 years. The sampleExpand
Single X-ray Bursts and the Model of a Spreading Layer of Accreting Matter over the Neutron Star Surface
The excess of the rate of type I X-ray bursts over that expected when the matter fallen between bursts completely burns out in a thermonuclear explosion which is observed in bursters with a highExpand
...
1
2
3
4
5
...