Towards gamma-ray astronomy with timing arrays

Combination of shower-front sampling and imaging in the Tunka Advanced International Gamma-ray and Cosmic ray Astrophysics (T

“…The main point of the combination between IACT and timing array is to improve the array's gamma-hadron separation power at its sensitivity threshold, e.g. about 10-50 TeV [6]. First, we evaluate how powerful the IACTs are on their own.…”

“…Using the timing array technique alone yields a Q ∼ 1 at the threshold and only starts to approach 2 at hundred TeV. [5] [6] For a first estimate on combined reconstruction quality (results shown in fig.4), the true core position is randomised with the HiSCORE core position resolution (toy MC). This randomised postition is then used to find the correct lookup-table entry for scaling, emulating a reconstruction by HiSCORE without actually simulating the showers in sim_score to save computing time.…”

Simulation of the hybrid Tunka Advanced International Gamma-ray and Cosmic ray Astrophysics (TAIGA)

“…TAIGA itself will be a combination of small IACT telescopes (in development), the HiSCORE array (Hundred * i Square-km Cosmic Origin Explorer, shower front sampling array, currently in deployment) [10] and the Tunka-Grande scintillation array (photon-electron and muon detection, planned) at Tunka valley, Russia (51 • 48' 35" N, 103 • 04' 02" E, 675 m a.s.l.). The muon detectors are envisaged for gamma-hadron separation at energies beyond 100 TeV.…”

TAIGA - an advanced hybrid detector complex for astroparticle physics, cosmic ray physics and gamma-ray astronomy

“…The novel approach to combine IACTs of TAIGA-IACT array and timing wide-angle Cherenkov TAIGA-HiSCORE array [8] within one instrument expands the capabilities of traditional IACTs towards higher energies. The timing TAIGA-HiSCORE array allows ones to determine the main parameters of an extensive air shower (EAS): a shower axis direction, a core position and energy.…”