NP3M Seminars (Virtual), Spring 2024
All talks are on an NP3M zoom channel on Thursdays at 11am EDT
- Jan. 18th, Aviral Prakash, Penn State Univ. (video)
- Feb. 15th, Yuki Fujimoto, INT, Univ. Washington (video)
- Feb. 29th, Damiano Fiorillo, Niels Bohr Inst. (video)
- Mar. 28th, Kyle Godbey, FRIB (video)
- Apr. 11th, Prasanta Char, Univ. of Salamanca (video)
- May 2nd, Joachim Kopp, Univ. of Mainz and CERN
- May 9th, Witek Nazarewicz, Michigan State Univ.
Title: Neutrinos from Neutron Stars
Abstract: We discuss various neutrino emission processes that can occur in neutron stars. We first review the physics of the "Urca" reactions, which act as the main cooling channel of young neutron stars and produce a large flux of neutrinos, albeit at relatively low energy. We then comment on two new sources of neutrinos in neutron stars: muon diffusion and decay in stars away from chemical equilibrium, and neutrino cooling of common-envelope systems. The latter are systems where a compact object (e.g. a neutron star) is engulfed by a binary companion, starts accreting at an enormous rate, and radiates away gravitational energy in neutrinos. Common-envelope evolution is believed to be crucial for the formation of LIGO/VIRGO/KAGRA gravitational wave sources, and we show that neutrinos might offer an opportunity to directly observe this process for the first time.
Title: Quantified nuclear density functional theory for nuclear astrophysics
Abstract: There has been noticeable progress in the global modeling of nuclear properties important for astrophysical modeling. A microscopic approach that is well suited to providing quantified predictions throughout the nuclear chart is nuclear Density Functional Theory. This global approach can be used to assess the uncertainties on calculated observables, both statistical and systematic. Such a capability is essential, especially for making wide-ranging extrapolations into the regions where experiments are impossible such as neutron-rich nuclei participating in the astrophysical r-process or neutron stars.
NP3M Seminars (Virtual), Spring 2024
All talks are on an NP3M zoom channel on Thursdays at 3pm EDT
- Aug. 24th, Cecilia Chirenti, Univ. Maryland (slides, video)
- Sept. 7th, Evan O'Connor, Stockholm Univ. (slides)
- Sept. 21th, Anuradha Gupta, Univ. Mississippi (slides, video)
- Oct. 5th, Pedro Espino, Penn State Univ. (slides)
- Oct. 19th, Luís Felipe, Univ. Jena (slides, video)
- Nov. 2nd, Alex Friedland, SLAC (slides, video)
- Nov. 16th, Alexander Haber, Wash. Univ. St. Louis (video)
- Nov. 30th, David Vartanyan, Carnegie Sci. Inst. (video)
- Dec. 14th, Luke Johns, Los Alamos Natl. Lab. (video)