Very Long Baseline Interferometry (VLBI) is a fundamental technique for both radio astronomy and geodesy. However, the two disciplines have traditionally followed different analysis strategies and scientific goals, and have consequently developed with relatively little interaction. One particularly relevant connection between them is the structure and evolution of the observed radio sources....
The upcoming Cherenkov Telescope Array Observatory (CTAO), together with current neutrino observatories such as IceCube and KM3NeT, will provide unprecedented opportunities to study the origin of very-high-energy (VHE) gamma rays and neutrinos from relativistic jets. Active Galactic Nuclei are promising sites for extreme particle acceleration, where hadronic interactions may naturally produce...
The present and future situation of outer space usage and corresponding harassment, either by space debris or a multitude of unknown spacecraft, requires treading new technological paths for reliable and responsive space situational awareness (SSA). Microwave radar, and especially imaging radar, is one of the fundamental frames of present and of course future SSA.
Several years ago, DLR has...
Axions or axionlike particles are promising candidates for dark matter that are motivated as a solution to the CP problem of strong interactions. Currently, massive efforts are underway, both using laboratory experiments and astrophysical sources, to search for their imprints on electromagnetic signals. A tiny interaction between axions and photons give rise to the phenomena of birefringence...
