You are here: Home / Seminars / Seminar Database / HEP Seminar: Magnetic Deflections of Ultra-High Energy Cosmic Rays from Centaurus A

HEP Seminar: Magnetic Deflections of Ultra-High Energy Cosmic Rays from Centaurus A

Main Content

Azadeh Keivani, Louisiana State University
When
16 April 2014 from 11:30 AM to 12:30 PM
Where
318 Osmond Laboratory
Contact Name
Contact Phone
814-863-5943
Add event to calendar
vCal
iCal

The origin of ultra-high energy cosmic rays (UHECRs) is one of the open
problems in particle astrophysics. Since UHECRs are mostly or entirely
charged particles, they will be deflected in cosmic magnetic fields on
their way to Earth. It is crucial to study UHECR deflections in the
Galactic magnetic fields in order to identify their origin. In this
study, the Galactic magnetic field is modeled using the recent work of
Jansson and Farrar (JF12) which fitted its parameters to match
extragalactic Faraday rotation measures and WMAP7 synchrotron emission maps. I will present the results of a study that simulates trajectories
of UHECRs from Centaurus A to Earth. Simulations are performed for
particle rigidities from E/Z = 2 EV to 100 EV, thus covering the
possibility of primary particles as heavy as Fe nuclei with energies
exceeding 50 EeV. The arrival directions are characterized to assess
whether Cen A can be identified as a source of cosmic rays based on
observing departures from isotropy. I will also include and explore the
impact of the turbulent magnetic field on cosmic ray deflections.

Seminars