BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:UW-Madison-Physics-Events BEGIN:VEVENT SEQUENCE:0 UID:UW-Physics-Event-7823 DTSTART:20220816T190000Z DURATION:PT1H0M0S DTSTAMP:20260414T113435Z LAST-MODIFIED:20220815T135422Z LOCATION:Join Zoom Meeting https://berkeley.zoom.us/j/91230714547 Mee ting ID: 912 3071 4547 SUMMARY:Effects of Nuclear Uncertainties on r-Process Observables\, Ne twork in Neutrinos\, Nuclear Astrophysics\, and Symmetries (N3AS) Semi nar\, Kelsey Lund \, NC State University DESCRIPTION:The rapid neutron capture process (r-process) is one of th e main mechanisms whereby elements heavier than iron are synthesized\, and is entirely responsible for the natural production of the actinid es. Kilonova emissions are modeled as being largely powered by the rad ioactive decay of species synthesized via the r -process. Given that t he r -process occurs far from nuclear stability\, unmeasured nuclear p roperties play an essential role in determining the success of the r - process. In an effort to better understand the sensitivity of kilonova modeling to different theoretical global beta-decay descriptions\, we incorporate these into nucleosynthesis calculations. We compare the r esults of these calculations and highlight differences in kilonova nuc lear energy generation and light curve predictions\, as well as final abundances and their implications for nuclear cosmochronometry. We inv estigate scenarios where differences in beta decay rates are responsib le for increased nuclear heating on time scales of days that propagate s into a significantly increased average bolometric luminosity. We ide ntify key nuclei\, both measured and unmeasured\, whose decay rates ar e directly impact nuclear heating generation on timescales responsible for light curve evolution. We also find that uncertainties in beta de cay rates significantly impact ages estimates from cosmochronometry. \n
\nHost: Baha Balantekin
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\ nhttps://berkeley.zoom.us/j/91230714547
\nMeeting ID: 912 3071 454 7
\n URL:https://www.physics.wisc.edu/events/?id=7823 END:VEVENT END:VCALENDAR