skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Constraints on Bygone Nucleosynthesis of Accreting Neutron Stars

Journal Article · · The Astrophysical Journal (Online)
 [1]; ORCiD logo [2]
  1. Ohio Univ., Athens, OH (United States). Inst. of Nuclear and Particle Physics and Dept. of Physics and Astronomy; Joint Inst. for Nuclear Astrophysics (JINA), East Lansing, MI (United States). Center for the Evolution of the Elements (JINA-CEE)
  2. Joint Inst. for Nuclear Astrophysics (JINA), East Lansing, MI (United States). Center for the Evolution of the Elements (JINA-CEE); Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy

Nuclear burning near the surface of an accreting neutron star produces ashes that, when compressed deeper by further accretion, alter the star’s thermal and compositional structure. Bygone nucleosynthesis can be constrained by the impact of compressed ashes on the thermal relaxation of quiescent neutron star transients. In particular, Urca cooling nuclei pairs in nuclear burning ashes that cool the neutron star crust via neutrino emission from e--capture/β--decay cycles and provide signatures of prior nuclear burning over the ~century timescales it takes to accrete to the e--capture depth of the strongest cooling pairs. By using crust cooling models of the accreting neutron star transient MAXI J0556-332, we show that this source likely lacked Type I X-ray bursts and superbursts ≳120 years ago. Reduced nuclear physics uncertainties in rp-process reaction rates and e--capture weak transition strengths for low-lying transitions will improve nucleosynthesis constraints using this technique.

Research Organization:
Ohio Univ., Athens, OH (United States); Michigan State Univ., East Lansing, MI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF); International Space Science Inst. (ISSI), Bern (Switzerland); Univ. of Washington, Seattle, WA (United States). Inst. for Nuclear Theory (INT)
Grant/Contract Number:
FG02-88ER40387; AST-1516969; PHY-1430152
OSTI ID:
1454430
Journal Information:
The Astrophysical Journal (Online), Vol. 837, Issue 1; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

References (39)

The Ame2012 atomic mass evaluation journal December 2012
Mapping Crustal Heating with the Cooling Light Curves of Quasi-Persistent Transients journal May 2009
The nature of the X-ray transient MAXI J0556−332: MAXI J0556−332 journal January 2012
Dependence of X-Ray Burst Models on Nuclear Reaction Rates journal October 2016
The jina Reaclib Database: its Recent Updates and Impact on Type-I X-Ray Bursts journal June 2010
A Strong Shallow heat Source in the Accreting Neutron star maxi J0556-332 journal August 2015
Urca Cooling Pairs in the Neutron star Ocean and Their Effect on Superbursts journal October 2016
Periodic Thermonuclear X‐Ray Bursts from GS 1826−24 and the Fuel Composition as a Function of Accretion Rate journal January 2004
Thermonuclear (Type I) X‐Ray Bursts Observed by the Rossi X‐Ray Timing Explorer
  • Galloway, Duncan K.; Muno, Michael P.; Hartman, Jacob M.
  • The Astrophysical Journal Supplement Series, Vol. 179, Issue 2 https://doi.org/10.1086/592044
journal December 2008
Neutrino Theory of Stellar Collapse journal April 1941
Heating in the Accreted Neutron Star Ocean: Implications for Superburst Ignition journal June 2007
Models of Type I X-Ray Bursts from GS 1826-24: A Probe of rp-Process Hydrogen Burning journal November 2007
A Strongly Heated Neutron star in the Transient z Source maxi J0556-332 journal October 2014
Hydrodynamic Models of type i X-Ray Bursts: Metallicity Effects journal June 2010
Reaction rate and Composition Dependence of the Stability of Thermonuclear Burning on Accreting Neutron Stars journal May 2014
Multi-Zone Models of Superbursts from Accreting Neutron Stars journal December 2011
Carbon production on accreting neutron stars in a new regime of stable nuclear burning journal November 2015
Superburst Models for Neutron Stars with Hydrogen- and Helium-Rich Atmospheres journal June 2012
Mass Measurement of Sc 56 Reveals a Small A = 56 Odd-Even Mass Staggering, Implying a Cooler Accreted Neutron Star Crust journal October 2015
Forecasting Neutron Star Temperatures: Predictability and Variability journal December 2013
Nucleosynthesis in type I X-ray bursts journal March 2013
Modules for Experiments in Stellar Astrophysics (Mesa) journal December 2010
Modules for Experiments in Stellar Astrophysics (Mesa): Planets, Oscillations, Rotation, and Massive Stars journal August 2013
Modules for Experiments in Stellar Astrophysics (Mesa): Binaries, Pulsations, and Explosions journal September 2015
Crustal Emission and the Quiescent Spectrum of the Neutron Star in KS 1731−260 journal November 2002
Nuclear Compositions in the Inner Crust of Neutron Stars journal October 1979
End Point of the rp Process on Accreting Neutron Stars journal April 2001
Photodisintegration-triggered Nuclear Energy Release in Superbursts journal February 2003
The Rapid Proton Process Ashes from Stable Nuclear Burning on an Accreting Neutron Star journal October 1999
X-ray binaries journal October 2006
rp-process nucleosynthesis at extreme temperature and density conditions journal February 1998
Strong neutrino cooling by cycles of electron capture and β− decay in neutron star crusts journal December 2013
Review Of LogftValues In β Decay journal July 1998
A Remarkable 3 Hour Thermonuclear Burst from 4U 1820−30 journal February 2002
Spectral Evolution of a New X-Ray Transient MAXI J0556−332 Observed by MAXI, Swift, and RXTE journal June 2013
URCA shells in dense stellar interiors journal June 1970
Quiescent thermal emission from neutron stars in low-mass X-ray binaries journal April 2015
Time-variable emission from transiently accreting neutron stars in quiescence due to deep crustal heating journal August 2001
Models for Type I X‐Ray Bursts with Improved Nuclear Physics journal March 2004

Cited By (11)

Cooling of Accretion-Heated Neutron Stars journal September 2017
Nuclear physics of the outer layers of accreting neutron stars journal July 2018
Neutron transfer reactions in accreting neutron stars journal November 2018
Nuclear Reactions in the Crusts of Accreting Neutron Stars journal May 2018
Crust-cooling Models Are Insensitive to the Crust–Core Transition Pressure for Realistic Equations of State journal September 2019
Spallation-altered Accreted Compositions for X-Ray Bursts: Impact on Ignition Conditions and Burst Ashes journal December 2019
Cooling of Accretion-Heated Neutron Stars text January 2017
Nuclear Reactions in the Crusts of Accreting Neutron Stars text January 2018
Nuclear Physics of the Outer Layers of Accreting Neutron Stars text January 2018
Spallation-altered accreted compositions for X-ray bursts: Impact on ignition conditions and burst ashes text January 2019
Modelling Thermonuclear X-ray Bursts on Accreting Neutron Stars text January 2020


Figures / Tables (5)


Similar Records

Mass Measurement of 56Sc Reveals a Small A=56 Odd-Even Mass Staggering, Implying a Cooler Accreted Neutron Star Crust
Journal Article · Fri Oct 16 00:00:00 EDT 2015 · Physical Review Letters · OSTI ID:1454430

A strongly heated neutron star in the transient z source MAXI J0556-332
Journal Article · Mon Nov 10 00:00:00 EST 2014 · Astrophysical Journal · OSTI ID:1454430

Urca cooling pairs in the neutron star ocean and their effect on superbursts
Journal Article · Tue Nov 01 00:00:00 EDT 2016 · Astrophysical Journal · OSTI ID:1454430