5 papers
To collapse or not to collapse: Halo evolution with self-interacting dark matter mass segregation
Yashraj Patil, Moritz S. Fischer
Surprisingly compact substructures in galaxies and galaxy clusters, but also field halos, have been observed by gravitational lensing. They could be difficult to explain with colli…
Accretion of self-interacting dark matter onto supermassive black holes
V. M. Sabarish, Marcus Brüggen, Kai Schmidt-Hoberg +1
Dark matter (DM) spikes around supermassive black holes (SMBHs) may lead to interesting physical effects such as enhanced DM annihilation signals or dynamical friction within binar…
N-body simulations of dark matter-baryon interactions
Moritz S. Fischer, Klaus Dolag, Mathias Garny +3
Dark matter (DM) particles can interact with particles of the standard model. Although there are a number of constraints derived from direct and indirect detection experiments, the…
N-body simulations of dark matter with frequent self-interactions
Moritz S. Fischer, Marcus Brüggen, Kai Schmidt-Hoberg +4
Self-interacting dark matter (SIDM) models have the potential to solve the small-scale problems that arise in the cold dark matter paradigm. Simulations are a powerful tool for stu…
Time-implicit schemes in fluid dynamics? -- Their advantage in the regime of ultra-relativistic shock fronts
Moritz S. Fischer, Ahmad A. Hujeirat
Relativistic jets are intrinsic phenomena of active galactic nuclei (AGN) and quasars. They have been observed to also emanate from systems containing compact objects, such as whit…