Dr
Ester Aliu
(Barnard College)
14/05/2013, 16:00
High-Energy Gamma Ray Astrophysics Parallel
The Milagro water Cherenkov detector surveyed the Northern Galactic plane at a mean energy of 20 TeV, resulting in the detection of the Crab Nebula, along with at least 7 other sources with angular extensions from 1 to 3.5 deg. Prospects for detecting some of these sources with IceCube has been made given that this data is reasonably well-fit with a simple hadronic model. Each of these sources...
Mr
Anushka U Abeysekara
(Michigan State University)
14/05/2013, 16:25
High-Energy Gamma Ray Astrophysics Parallel
The pulsed GeV gamma-ray emissions from pulsars appear to come from the outer-gap and polar-cap emissions, which are powered by the out flowing electron-positron wind. This electron-positron wind is also the energy source of the un-pulsed TeV emission in the pulsar wind nebulae (PWN). Therefore, a tight correlation between the pulsed GeV emission and un-pulsed TeV emission might be expected....
Dr
Serap Tilav
(o=udel,ou=Institutions,dc=icecube,dc=wisc,dc=edu)
14/05/2013, 16:50
High-Energy Gamma Ray Astrophysics Parallel
Rigidity dependent breaks and the hardening of the elemental spectra observed above 200 GeV provided the most important hint on the nature of the cosmic ray knee. Model independent analysis of the CR data (direct and indirect combined) shows at least 3 different populations of particles needed to describe the spectrum and composition from 200 GeV up to 200 EeV.