Advancement of photospheric radius expansion and clocked type-I x-ray burst models with the new 22Mg(α,p)25 Al reaction rate determined at Gamow energy

J.  Hu; H Yamaguchi; Y H Lam; A Heger; D Kahl; A M  Jacobs; Z Johnston; S W Xu; N T  Zhang; S B  Ma; L H Ru; E Q Liu; T Liu; S. Hayakawa; L. Yang; H Shimizu; C B  Hamill; A. St. J. Murphy; J Su; X. Fang; K Y Chae; M S Kwag; S M Cha; N N Duy; N K Uyen; D H Kim; R. G. Pizzone; M. La Cognata; S. Cherubini; S. Romano; A. Tumino; J Liang; A Psaltis; M Sferrazza; D H Kim; Y Y  Li; S Kubono

doi:10.1103/PhysRevLett.127.172701

Advancement of photospheric radius expansion and clocked type-I x-ray burst models with the new 22Mg(α,p)25 Al reaction rate determined at Gamow energy

J. Hu^*, H Yamaguchi, Y H Lam^*, A Heger, D Kahl, A M Jacobs, Z Johnston, S W Xu, N T Zhang, S B Ma, L H Ru, E Q Liu, T Liu, S. Hayakawa, L. Yang, H Shimizu, C B Hamill, A. St. J. Murphy, J Su, X. FangK Y Chae, M S Kwag, S M Cha, N N Duy, N K Uyen, D H Kim, R. G. Pizzone, M. La Cognata, S. Cherubini, S. Romano, A. Tumino, J Liang, A Psaltis, M Sferrazza, D H Kim, Y Y Li, S Kubono

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We report the first (in)elastic scattering measurement of 25Al+p with the capability to select and measure in a broad energy range the proton resonances in 26Si contributing to the 22Mg(α,p) reaction at type I x-ray burst energies. We measured spin-parities of four resonances above the α threshold of 26Si that are found to strongly impact the 22Mg(α,p) rate. The new rate advances a state-of-the-art model to remarkably reproduce lightcurves of the GS 1826-24 clocked burster with mean deviation <9% and permits us to discover a strong correlation between the He abundance in the accreting envelope of photospheric radius expansion burster and the dominance of 22Mg(α,p) branch.

Original language	English
Article number	172701
Pages (from-to)	1-7
Number of pages	7
Journal	Physical Review Letters
Volume	127
Issue number	17
Early online date	19 Oct 2021
DOIs	https://doi.org/10.1103/PhysRevLett.127.172701
Publication status	Published - 22 Oct 2021

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10.1103/PhysRevLett.127.172701

updated manuscriptAccepted author manuscript, 1.41 MB

Edinburgh Nuclear Physics Group Consolidated Grant Proposal
Woods, P. (Principal Investigator), Aliotta, M. (Co-investigator), Murphy, A. (Co-investigator) & Watts, D. (Co-investigator)
STFC
1/08/14 → 30/09/18
Project: Research

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Hu, J., Yamaguchi, H., Lam, Y. H., Heger, A., Kahl, D., Jacobs, A. M., Johnston, Z., Xu, S. W., Zhang, N. T., Ma, S. B., Ru, L. H., Liu, E. Q., Liu, T., Hayakawa, S., Yang, L., Shimizu, H., Hamill, C. B., Murphy, A. S. J., Su, J., ... Kubono, S. (2021). Advancement of photospheric radius expansion and clocked type-I x-ray burst models with the new 22Mg(α,p)25 Al reaction rate determined at Gamow energy. Physical Review Letters, 127(17), 1-7. Article 172701. https://doi.org/10.1103/PhysRevLett.127.172701

@article{90321a9e2a4745d2b07ee21f30f34139,

title = "Advancement of photospheric radius expansion and clocked type-I x-ray burst models with the new 22Mg(α,p)25 Al reaction rate determined at Gamow energy",

abstract = "We report the first (in)elastic scattering measurement of 25Al+p with the capability to select and measure in a broad energy range the proton resonances in 26Si contributing to the 22Mg(α,p) reaction at type I x-ray burst energies. We measured spin-parities of four resonances above the α threshold of 26Si that are found to strongly impact the 22Mg(α,p) rate. The new rate advances a state-of-the-art model to remarkably reproduce lightcurves of the GS 1826-24 clocked burster with mean deviation <9\% and permits us to discover a strong correlation between the He abundance in the accreting envelope of photospheric radius expansion burster and the dominance of 22Mg(α,p) branch.",

author = "J. Hu and H Yamaguchi and Lam, \{Y H\} and A Heger and D Kahl and Jacobs, \{A M\} and Z Johnston and Xu, \{S W\} and Zhang, \{N T\} and Ma, \{S B\} and Ru, \{L H\} and Liu, \{E Q\} and T Liu and S. Hayakawa and L. Yang and H Shimizu and Hamill, \{C B\} and Murphy, \{A. St. J.\} and J Su and X. Fang and Chae, \{K Y\} and Kwag, \{M S\} and Cha, \{S M\} and Duy, \{N N\} and Uyen, \{N K\} and Kim, \{D H\} and Pizzone, \{R. G.\} and \{La Cognata\}, M. and S. Cherubini and S. Romano and A. Tumino and J Liang and A Psaltis and M Sferrazza and Kim, \{D H\} and Li, \{Y Y\} and S Kubono",

year = "2021",

month = oct,

day = "22",

doi = "10.1103/PhysRevLett.127.172701",

language = "English",

volume = "127",

pages = "1--7",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "17",

}

Hu, J, Yamaguchi, H, Lam, YH, Heger, A, Kahl, D, Jacobs, AM, Johnston, Z, Xu, SW, Zhang, NT, Ma, SB, Ru, LH, Liu, EQ, Liu, T, Hayakawa, S, Yang, L, Shimizu, H, Hamill, CB, Murphy, ASJ, Su, J, Fang, X, Chae, KY, Kwag, MS, Cha, SM, Duy, NN, Uyen, NK, Kim, DH, Pizzone, RG, La Cognata, M, Cherubini, S, Romano, S, Tumino, A, Liang, J, Psaltis, A, Sferrazza, M, Kim, DH, Li, YY & Kubono, S 2021, 'Advancement of photospheric radius expansion and clocked type-I x-ray burst models with the new 22Mg(α,p)25 Al reaction rate determined at Gamow energy', Physical Review Letters, vol. 127, no. 17, 172701, pp. 1-7. https://doi.org/10.1103/PhysRevLett.127.172701

TY - JOUR

T1 - Advancement of photospheric radius expansion and clocked type-I x-ray burst models with the new 22Mg(α,p)25 Al reaction rate determined at Gamow energy

AU - Hu, J.

AU - Yamaguchi, H

AU - Lam, Y H

AU - Heger, A

AU - Kahl, D

AU - Jacobs, A M

AU - Johnston, Z

AU - Xu, S W

AU - Zhang, N T

AU - Ma, S B

AU - Ru, L H

AU - Liu, E Q

AU - Liu, T

AU - Hayakawa, S.

AU - Yang, L.

AU - Shimizu, H

AU - Hamill, C B

AU - Murphy, A. St. J.

AU - Su, J

AU - Fang, X.

AU - Chae, K Y

AU - Kwag, M S

AU - Cha, S M

AU - Duy, N N

AU - Uyen, N K

AU - Kim, D H

AU - Pizzone, R. G.

AU - La Cognata, M.

AU - Cherubini, S.

AU - Romano, S.

AU - Tumino, A.

AU - Liang, J

AU - Psaltis, A

AU - Sferrazza, M

AU - Kim, D H

AU - Li, Y Y

AU - Kubono, S

PY - 2021/10/22

Y1 - 2021/10/22

N2 - We report the first (in)elastic scattering measurement of 25Al+p with the capability to select and measure in a broad energy range the proton resonances in 26Si contributing to the 22Mg(α,p) reaction at type I x-ray burst energies. We measured spin-parities of four resonances above the α threshold of 26Si that are found to strongly impact the 22Mg(α,p) rate. The new rate advances a state-of-the-art model to remarkably reproduce lightcurves of the GS 1826-24 clocked burster with mean deviation <9% and permits us to discover a strong correlation between the He abundance in the accreting envelope of photospheric radius expansion burster and the dominance of 22Mg(α,p) branch.

AB - We report the first (in)elastic scattering measurement of 25Al+p with the capability to select and measure in a broad energy range the proton resonances in 26Si contributing to the 22Mg(α,p) reaction at type I x-ray burst energies. We measured spin-parities of four resonances above the α threshold of 26Si that are found to strongly impact the 22Mg(α,p) rate. The new rate advances a state-of-the-art model to remarkably reproduce lightcurves of the GS 1826-24 clocked burster with mean deviation <9% and permits us to discover a strong correlation between the He abundance in the accreting envelope of photospheric radius expansion burster and the dominance of 22Mg(α,p) branch.

U2 - 10.1103/PhysRevLett.127.172701

DO - 10.1103/PhysRevLett.127.172701

M3 - Article

SN - 0031-9007

VL - 127

SP - 1

EP - 7

JO - Physical Review Letters

JF - Physical Review Letters

IS - 17

M1 - 172701

ER -

Advancement of photospheric radius expansion and clocked type-I x-ray burst models with the new 22Mg(α,p)25 Al reaction rate determined at Gamow energy

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Edinburgh Nuclear Physics Group Consolidated Grant Proposal

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