The light curves of low-mass X-ray binaries show variability on timescales from milliseconds to months. The shorter (sub-second) variability is particularly interesting because it is thought to probe the inner region of the accretion disk and the central compact object. X-ray spectral-timing is a new type of analysis that seeks...
Algorithms from the field of pattern recognition are used throughout industry and academia. In particular machine learning algorithms have become an established technique in modern experimental physics, for instance for the discrimination between desired measurements and background. In recent years, the concept of deep learning has gained considerable attention in...
Precision measurements of the kinematics of weak decays offer the only model- independent (direct) approach to investigate the absolute neutrino mass scale in a laboratory experiment. In this talk I will review the status of direct neutrino mass searches based on beta decay of tritium and electron capture in 163Ho...
The IceCube Neutrino Observatory is a 1 km3 optical Cherenkov detector embedded deep in the ice sheet that covers the geographic South Pole. Since its completion in the austral summer of 2010, data from the observatory have provided the first evidence for a flux of extraterrestrial high-energy neutrinos of multiple...
Spectral and anisotropy properties of IceCube astrophysical neutrino signals reveal evidence for a sizeable Galactic contribution to the neutrino flux in the Southern Hemisphere. I will review this evidence and relate it to the absence of Galactic component signature in the muon neutrino signal from the Northern sky. I will...
Gamma Ray Bursts are among the most powerful astrophysical phenomena. In the recent past many observations shed light on their high-energy (HE, E>10 MeV) emission properties. In the seminar I will describe the observations of GRBs by the currently operating HE satellites AGILE and Fermi. I will discuss the main...
The arrival directions of Galactic cosmic rays are highly isotropic. This is expected from the presence of turbulent magnetic fields in our Galactic environment that repeatedly scatter charged cosmic rays during propagation. However, various cosmic ray observatories have identified weak anisotropies of various angular sizes and with relative intensities of...
Driven by the profound evidence from cosmology and astronomy the existence of dark matter is well-established as a part of our universe. Despite the fact, that there is five times more dark matter than baryonic matter out in the universe, its nature remains puzzling up to now. The promising idea...
The High-Altitude Water Cherenkov Observatory (HAWC) collected more than a year of data in its full configuration. With its large field of view and high uptime it is exposed to two-thirds of the sky every day. From the light distribution in the arrays water-Cherenkov tanks we discriminate between electromagnetic and...
The Jiangmen Underground Neutrino Observatory (JUNO) is a neutrino experiment under construction near Jiangmen, China. Its main component will be a spherical 20 kton liquid scintillator detector placed in a 700 m deep underground laboratory. The experiment is designed for the determination of the neutrino mass hierarchy by measuring oscillation...
H.E.S.S. (High Energy Stereoscopic System) is a hybrid array of five Imaging Atmospheric Cherenkov Telescopes observing the very high energy gamma-ray sky. In the past decade, this experiment has significantly contributed to the field of ground-based gamma-ray astronomy. In particular, the H.E.S.S. Galactic plane survey (HGPS), conducted from 2004 to...