Friday, Dec 21 at 2:00 PM
1200 FRIB Laboratory
Felix Ndayisabye, NSCL Graduate Assistant
Software tool for performing the calibration of the AT-TPC electronics channels

Abstract:  Committee: Daniel Bazin (Chairperson), Artemis Spyrou, Christopher Wrede, Remco Zegers

Friday, Dec 21 at 2:00 PM
2025 FRIB Laboratory
Wei Jia Ong, Lawrence Livermore National Lab
JINA-CEE Seminar - Investigating Urca cooling in neutron star crusts

Abstract:  Observations of quasi-persistent X-ray transients, neutron stars which exhibit alternate phases of accretion and cooling, yield information about the interior structure of a neutron star. During quiescence, the X-ray profile and luminosity depend on the thermal evolution and structure of the neutron star. The electron degeneracy in the crust allows electron captures to occur on the rp-process ashes, transforming them into increasingly neutron-rich species as the depth of the ash increases. At the boundaries between species, Urca cycling can occur, leading to intense neutrino cooling. The strength of this cooling depends significantly on the b decay transition strength between ground states of these neutron-rich nuclei. A recent experimental effort to precisely quantify the ground state to ground state transition strength of the potentially strong cooler 61V will be presented, along with prospects for further experimental work.

Monday, Jan 14 at 12:30 PM
1400 Biomedical and Physical Sciences Building
Dennis Muecher, University of Guelph
JINA-CEE Seminar - Title to be announced