The Impact of Neutron Transfer Reactions on the Heating and Cooling of Accreted Neutron Star Crusts

@article{Schatz2021TheIO,
  title={The Impact of Neutron Transfer Reactions on the Heating and Cooling of Accreted Neutron Star Crusts},
  author={H. Schatz and Zach Meisel and Edward F. Brown and S. S. das Gupta and George Wesley Hitt and W. Raphael Hix and R. Jain and Rita Lau and P. M{\"o}ller and Wei Ja Ong and P. S. Shternin and Y. Xu and Michael Wiescher},
  journal={The Astrophysical Journal},
  year={2021},
  volume={925}
}
Nuclear reactions heat and cool the crust of accreting neutron stars and need to be understood to interpret observations of X-ray bursts and long-term cooling in transiently accreting systems. It was recently suggested that previously ignored neutron transfer reactions may play a significant role in the nuclear processes. We present results from full nuclear network calculations that now include these reactions and determine their impact on crust composition, crust impurity, heating, and… 
1 Citations

Improved nuclear physics near A=61 refines urca neutrino luminosities in accreted neutron star crusts

Z. Meisel, ∗ A. Hamaker, 3 G. Bollen, 4 B.A. Brown, 3, 5 M. Eibach, K. Gulyuz, 7 C. Izzo, 3, † C. Langer, F. Montes, 5 W.-J Ong, D. Puentes, 3 M. Redshaw, 2 R. Ringle, R. Sandler, 7 H. Schatz, 3, 5

References

SHOWING 1-10 OF 23 REFERENCES

Nuclear Reactions in the Crusts of Accreting Neutron Stars

X-ray observations of transiently accreting neutron stars during quiescence provide information about the structure of neutron star crusts and the properties of dense matter. Interpretation of the

Crust structure and thermal evolution of neutron stars in soft X-ray transients

Context. The thermal evolution of neutron stars in soft X-ray transients (SXTs) is sensitive to the equation of state, nucleon superfluidity, and the composition and structure of the crust. Carrying

Models of crustal heating in accreting neutron stars

Aims. We calculate heating associated with non-equilibrium nuclear reactions in accreting neutron-star crusts, taking into account the suppression of neutrino losses demonstrated recently by Gupta et

Strong neutrino cooling by cycles of electron capture and β− decay in neutron star crusts

It is reported that cycles of electron capture and its inverse, β− decay, involving neutron-rich nuclei at a typical depth of about 150 metres, cool the outer neutron star crust by emitting neutrinos while also thermally decoupling the surface layers from the deeper crust.

Heating in the accreted neutron star ocean: implications for superburst ignition

We perform a self-consistent calculation of the thermal structure in the crust of a superbursting neutron star. In particular, we follow the nucleosynthetic evolution of an accreted fluid element

Nuclear physics of the outer layers of accreting neutron stars

Now 50 years since the existence of the neutron star crust was proposed, we review the current understanding of the nuclear physics of the outer layers of accreting neutron stars. Nuclei produced

Crust of accreting neutron stars within simplified reaction network

Transiently accreting neutron stars in low-mass X-ray binaries are generally believed to be heated up by nuclear reactions in accreted matter during hydrostatic compression. Detailed modelling of

Deep crustal heating for realistic compositions of thermonuclear ashes

The deep crustal heating, associated with exothermal nuclear reactions, is believed to be a key parameter for describing the thermal evolution of accreting neutron stars. In this paper, we present

Evidence for crust cooling in the transiently accreting 11-Hz X-ray pulsar in the globular cluster Terzan 5

The temporal heating and subsequent cooling of the crusts of transiently accreting neutron stars carries unique information about their structure and a variety of nuclear reaction processes. We

Constraining the properties of neutron star crusts with the transient low-mass X-ray binary Aql X-1

Aql X-1 is a prolific transient neutron star low-mass X-ray binary that exhibits an accretion outburst approximately once every year. Whether the thermal X-rays detected in intervening quiescent