Jump To Date
View By Semester
View By Series
Add An Event

Center for Astrophysics Research and Technologies Seminar Series Information


Events Calendar

The Neutrino Halo

Tuesday August 28, 2012
2:00 pm

 Presenter:  John Cherry (UC San Diego)
 Series:  Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars
 Abstract:  We show that the small fraction of neutrinos that undergo direction-changing scattering outside of the neutrinosphere could have significant influence on neutrino flavor transformation in core-collapse supernova environments. The flux of thesescattered neutrinos is strongly dependent on the nuclear composition of the supernova envelope, and as a result the neutrino flavor evolution history may also be dependent on nuclear composition. We demonstrate that the standard treatment for collective neutrino flavor transformation is adequate at late times, but could be inadequate in early epochs of core-collapse supernovae, where the potentials that govern neutrino flavor evolution are affected by the scattered neutrinos. Taking account of this effect, and the way it couples to entropy and composition, will require a new approach in neutrino flavor transformation modeling.
 Host:  Huaiyu (Mike) Duan
 Location:  Room 190, Physics & Astronomy

Disability Notice Individuals with disabilities who need an auxiliary aid or service to attend or participate in P&A events should contact Sandra Ortiz (phone: 505-277-5900, email: sportiz@unm.edu) well in advance to ensure your needs are accommodated. Event handouts can be provided in alternative accessible formats upon request. Please contact Ms. Ortiz if you need written information in an alternative format.