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Gamma-Ray Astrophysics in the Time Domain

ZAH, Institut für Theoretische Astrophysik, Heidelberg University, Philosophenweg 12, 69120 Heidelberg, Germany
Galaxies 2019, 7(1), 28; https://doi.org/10.3390/galaxies7010028
Received: 17 December 2018 / Revised: 22 January 2019 / Accepted: 24 January 2019 / Published: 29 January 2019
(This article belongs to the Special Issue Monitoring the Non-Thermal Universe)
The last few years have seen gamma-ray astronomy maturing and advancing in the field of time-domain astronomy, utilizing source variability on timescales over many orders of magnitudes, from a decade down to a few minutes and shorter, depending on the source. This review focuses on some of the key science issues and conceptual developments concerning the timing characteristics of active galactic nuclei (AGN) at gamma-ray energies. It highlights the relevance of adequate statistical tools and illustrates that the developments in the gamma-ray domain bear the potential to fundamentally deepen our understanding of the nature of the emitting source and the link between accretion dynamics, black hole physics, and jet ejection. View Full-Text
Keywords: gamma-rays; emission: non-thermal; variability; origin: jet; origin: black hole gamma-rays; emission: non-thermal; variability; origin: jet; origin: black hole
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Rieger, F.M. Gamma-Ray Astrophysics in the Time Domain. Galaxies 2019, 7, 28.

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