Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 54: Gammaastronomie II

T 54.6: Vortrag

Mittwoch, 21. März 2018, 17:55–18:10, Philo-HS7

Transient simulations for ground-based detection — •Jana Moschner, Lena Linhoff, and Kai Brügge — TU Dortmund

Gamma-ray bursts (GRBs) are high energy transient phenomena in the gamma-ray band which show incomparable brightness for very short time scales. Despite many detections and follow-up observations in different wavelengths, there remain unsolved questions on GRBs. With their unprecedented sensitivity, fast slewing capacity and wide field of view, the next generation of ground-based Cherenkov telescopes like CTA will be able to detect and follow-up transients like GRBs. To analyze these short transient, we are currently working on a tool which detects transients during the regular data taking. A wavelet transform makes it possible to find transient events in the field of view of a steady source. Therefore a steady source, the cosmic background and a transient are simulated by using toy models. Instead of that, we now need realistic models to develop and evaluate the methods for transient detection. Due to the low number of ground-based transient observations, there is a need for physically wise simulations of spectra and lightcurves of short transients in the energy range of Cherenkov telescopes. This talk will give an introduction to different simulation models for transients like GRBs based on data from the Fermi and Swift satellites.