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GrailQuest and HERMES: hunting for gravitational wave electromagnetic counterparts and probing space-time quantum foam
Autoři | |
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Rok publikování | 2021 |
Druh | Článek ve sborníku |
Konference | Proceedings Volume 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray |
Fakulta / Pracoviště MU | |
Citace | |
www | |
Doi | http://dx.doi.org/10.1117/12.2561779 |
Klíčová slova | Gamma-Ray Bursts; X-rays; CubeSats; nano-satellites; temporal triangulation; Quantum gravity; Gravitational Wave counterparts; all-sky monitor; Temporal triangulation |
Popis | Within Quantum Gravity theories, different models for space-time quantisation predict an energy dependent speed for photons. Although the predicted discrepancies are minuscule, GRB, occurring at cosmological distances, could be used to detect this signature of space-time granularity with a new concept of modular observatory of huge overall collecting area consisting in a fleet of small satellites in low orbits, with sub-microsecond time resolution and wide energy band (keV-MeV). The enormous number of collected photons will allow to effectively search these energy dependent delays. Moreover, GrailQuest will allow to perform temporal triangulation of high signal-to-noise impulsive events with arc-second positional accuracies: an extraordinary sensitive X-ray/Gamma all-sky monitor crucial for hunting the elusive electromagnetic counterparts of GW. A pathfinder of GrailQuest is already under development through the HERMES project: a fleet of six 3U cube-sats to be launched by 2021/22. |
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