Embedded Files
Find below some of my science highlights. For those willing to take the risk, you can dive into the full published list on the NASA ADS.
General relativistic magneto-hydrodynamic simulation of the plasma flow around a dilaton black hole, post-processed using general relativistic radiative transfer calculations.
An exotic mass monster
An exotic mass monster
In a computer simulation, hot gas swirls around an unusual compact object: a "dilaton" black hole. Derived from string theory, its appearance resembles that of a "regular" black hole out of Einstein's theory of general relativity. Taking different scenarios for the radiation mechanism and the accretion of matter onto the black hole into account, it is evident that direct imaging has little chances as a test for general relativity.
This study is published in Astronomy & Astrophysics.
Relativistic jets with the Event Horizon Telescope
Relativistic jets with the Event Horizon Telescope
Supermassive black holes at the centers of galaxies are known to produce relativistic jets - highly collimated beams of magnetized plasma, reaching thousands of light years into interstellar space.
Alongside the two supermassive black holes in M87 and Sgr A*, the Event Horizon Telescope (EHT) observed a total of sixteen such "active galactic nuclei" (AGN) in 2017. Despite the small sample, a clear deviation from established models of jets was found, requiring acceleration or changes in geometry to explain the observations.
Read more in Astronomy & Astrophysics.
Schematic view of an AGN. From close to the black hole, relativistic jets are launched, starting off with a parabolic geometry and later transitioning to a conical appearance.
Page updated
Google Sites
Report abuse