First direct measurement of ${}^{22}$Mg($\alpha$,p)${}^{25}$Al and implications for X-ray burst model-observation comparisons

Abstract

Type-I X-ray burst (XRB) light curves are sensitive to the model's nuclear input and consequently affects the model-observation comparisons. ${}^{22}$Mg($\alpha$,p)${}^{25}$Al is among the most important reactions which directly impact the XRB light curve. We report the first direct measurement of ${}^{22}$Mg($\alpha$,p)${}^{25}$Al using the Active Target Time Projection Chamber. XRB light curve model-observation comparison for the source $GS1826-24$ using new reaction rate implies a less-compact neutron star than previously inferred. Additionally, our result removes an important uncertainty in XRB model calculations that previously hindered extraction of the neutron star compactness.

References in corpus (6)

• Dependence of X-Ray Burst Models on Nuclear Reaction Rates
• X-ray binaries
• The Effects of Variations in Nuclear Processes on Type I X-Ray Burst Nucleosynthesis
• Influence of Nuclear Reaction Rate Uncertainties on Neutron Star Properties Extracted From X-ray Burst Model-Observation Comparisons
• Constraints on Bygone Nucleosynthesis of Accreting Neutron Stars
• Constraining the Neutron Star Compactness: Extraction of the ${}^{23}$Al($p,\gamma$) Reaction Rate for the $rp$-Process

Cited by in corpus (9)

• Horizons: Nuclear Astrophysics in the 2020s and Beyond
• Advancement of Photospheric Radius Expansion and Clocked Type-I X-Ray Burst Models with the New ${}^{22}$Mg$(\alpha ,p{)}^{25}$Al Reaction Rate Determined at Gamow Energy
• Study of the ${}^{22}$Mg waiting point relevant for x-ray burst nucleosynthesis via the ${}^{22}$Mg($\alpha$,$p$)${}^{25}$Al reaction
• First direct measurement constraining the ${}^{34}$Ar($\alpha$,p)${}^{37}$K reaction cross section for mixed hydrogen and helium burning in accreting neutron stars
• High-precision mass measurement of ${}^{24}$Si and a refined determination of the $rp$ process at the $A=22$ waiting point
• Single neutron transfer on 23Ne and its relevance forthepathway ofnucleosynthesis in astrophysical X-ray bursts
• Production of radioactive ${}^{22}$Na in core-collapse supernovae: the Ne-E(L) component in presolar grains and its possible consequences on supernova observations
• New ${}^{63}$Ga(p,$\gamma$)${}^{64}$Ge and ${}^{64}$Ge(p,$\gamma$)${}^{65}$As reaction rates corresponding to the temperature regime of thermonuclear X-ray bursts
• Enhancing the performance of solenoidal spectrometers for inverse reactions