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Advancement of Photospheric Radius Expansion and Clocked Type-I X-Ray Burst Models with the New Reaction Rate Determined at the Gamow Energy

par Hu, Jun;Yamaguchi, Hikaru;Lam, Y.H.;Heger, Alexander;Kahl, Daid;Jacobs, A.M.;Johnston, Zac;Xu, Shiwei S.W.;Zhang, Ningtao N.T.;Ma, Shaobo S.B.;Ru, L.H.;Liu, Enqiang E.Q.;Liu, Tong;Hayakawa, Seiya;Yang, Lei;Shimizu, Hiroki;Hamill, C.B.;Murphy, StJ A.S.J.;Su, Jun;Fang, Xiao;Chae, K.Y.;Kwag, Minsik M.S.;Cha, Soomi S.M.;Duy, Nguyen Ngoc;Uyen, Nguyen Kim;Kim, Dae-hwan;Pizzone, Rosario Gianluca;La Cognata, M.;Cherubini, Silvio;Romano, Stefano;Tumino, Aurora;Liang, J.;Psaltis, Athanasios;Sferrazza, Michele ;Kim, Duhyun;Li, Yanyan Y.Y.;Kubono, Shigeru
Référence Physical review letters, 127, 17, 172701
Publication Publié, 2021-10-01

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Résumé :

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