Mehr Un Nisa (MSU)

Title: Unveiling the TeV Sky in Neutrinos and Gamma rays

Abstract: The search for the origin of cosmic rays as well as the signatures of new physics, are closely tied to precision measurements, of both point and diffuse sources of very-high-energy Galactic and extra-galactic emission. The IceCube Neutrino Observatory has been observing a bright, diffuse flux of neutrinos at TeV—PeV energies for over a decade, but the origin of the majority of this flux remains unknown.  At the same time, the High-Altitude Water Cherenkov (HAWC) observatory has been taking continuous high-statistics measurements of TeV gamma rays from two-thirds of the sky since commencing full operations in 2015. With its wide-angle survey capability, and a sensitivity to photon energies reaching over 100 TeV, HAWC is in a unique position probe the acceleration and propagation of cosmic rays in the local universe. I will describe some efforts on both  IceCube and HAWC frontiers to resolve the puzzle of the diffuse neutrino background, and discuss the prospects for combined measurements with neutrinos and gamma rays in the era of multi-messenger astronomy.