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dc.contributor.authorLam, Y.H.
dc.contributor.authorHe, J.J.
dc.contributor.authorParikh, Anuj Ramesh
dc.date.accessioned2017-01-12T11:41:30Z
dc.date.available2017-01-12T11:41:30Z
dc.date.issued2016-02
dc.identifier.citationLam, Y., He, J., Parikh, A.R. Reaction Rates of 64Ge(p,g)65As and 65As(p,g)66Se and the Extent of Nucleosynthesis in Type I X-Ray Bursts. "Astrophysical journal", Febrer 2016, vol. 818, núm. 78, p. 1-11.
dc.identifier.issn0004-637X
dc.identifier.urihttp://hdl.handle.net/2117/99086
dc.description.abstractThe extent of nucleosynthesis in models of type I X-ray bursts (XRBs) and the associated impact on the energy released in these explosive events are sensitive to nuclear masses and reaction rates around the 64Ge waiting point. Using the well known mass of 64Ge, the recently measured 65As mass, and large-scale shell model calculations, we have determined new thermonuclear rates of the 64Ge(p,¿)65As and 65As(p,¿)66Se reactions with reliable uncertainties. The new reaction rates differ significantly from previously published rates. Using the new data, we analyze the impact of the new rates and the remaining nuclear physics uncertainties on the 64Ge waiting point in a number of representative one-zone XRB models. We find that in contrast to previous work, when all relevant uncertainties are considered, a strong 64Ge rp-process waiting point cannot be ruled out. The nuclear physics uncertainties strongly affect XRB model predictions of the synthesis of 64Zn, the synthesis of nuclei beyond A = 64, the energy generation, and the burst light curve. We also identify key nuclear uncertainties that need to be addressed to determine the role of the 64Ge waiting point in XRBs. These include the remaining uncertainty in the 65As mass, the uncertainty of the 66Se mass, and the remaining uncertainty in the 65As(p,¿)66Se reaction rate, which mainly originates from uncertain resonance energieS
dc.format.extent11 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Física::Astronomia i astrofísica
dc.subject.lcshAstrophysics
dc.titleReaction Rates of 64Ge(p,g)65As and 65As(p,g)66Se and the Extent of Nucleosynthesis in Type I X-Ray Bursts
dc.typeArticle
dc.subject.lemacAstrofísica
dc.contributor.groupUniversitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica
dc.identifier.doi10.3847/0004-637X/818/1/78
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://iopscience.iop.org/article/10.3847/0004-637X/818/1/78/pdf
dc.rights.accessOpen Access
local.identifier.drac19374266
dc.description.versionPostprint (author's final draft)
local.citation.authorLam, Y.; He, J.; Parikh, A.R.
local.citation.publicationNameAstrophysical journal
local.citation.volume818
local.citation.number78
local.citation.startingPage1
local.citation.endingPage11


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