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Gamow-Teller strength distributions and neutrino energy loss rates due to chromium isotopes in stellar matter

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Abstract

Gamow-Teller transitions in isotopes of chromium play a consequential role in the presupernova evolution of massive stars. \(\beta\)-decay and electron capture rates on chromium isotopes significantly affect the time rate of change of lepton fraction (\(\dot{Y_{e}}\)). Fine-tuning of this parameter is one of the key for simulating a successful supernova explosion. The (anti)neutrinos produced as a result of electron capture and \(\beta\)-decay are transparent to stellar matter during presupernova phases. They carry away energy and this result in cooling the stellar core. In this paper we present the calculations of Gamow-Teller strength distributions and (anti)neutrino energy loss rates due to weak interactions on chromium isotopes of astrophysical importance. We compare our results with measured data and previous calculations wherever available.

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Acknowledgements

J.-U. Nabi would like to acknowledge the support of the Higher Education Commission Pakistan through the HEC Project No. 20-3099.

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Correspondence to Jameel-Un Nabi.

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Nabi, JU., Shehzadi, R. & Fayaz, M. Gamow-Teller strength distributions and neutrino energy loss rates due to chromium isotopes in stellar matter. Astrophys Space Sci 361, 95 (2016). https://doi.org/10.1007/s10509-016-2682-7

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  • DOI: https://doi.org/10.1007/s10509-016-2682-7

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