Speaker
Dr
Shigehiro Nagataki
(RIKEN)
Description
The Telescope Array (TA) collaboration has reported a hotspot of 19 ultrahigh-energy cosmic rays (UHECRs), offering an opportunity to study their origin. Using a universal model with one source and energy-dependent magnetic deections, we show that the distribution of the TA hotspot events is consistent with a single source hypothesis, and that the chance probability of this distribution appearing from a homogeneous distribution is 0.2%. We describe a Monte Carlo Bayesian (MCB) inference approach, which can be used to derive parameters of the magnetic fields as well as the source coordinates, and we apply this method to the TA hotspot data, inferring the location of the likely source. We discuss possible applications of the same approach to future data.
Primary author
Dr
Haoning He
(PMO/UCLA)
Co-authors
Prof.
Alexander Kusenko
(UCLA/Kavli IPMU)
Dr
Bin-Bin Zhang
(Univ. of Alabama)
Dr
Rui-Zhi Yang
(MPIK)
Dr
Shigehiro Nagataki
(RIKEN)
Dr
Yi-Zhong Fan
(PMO)
