Andreas H. W. Küpper
YOU?
Author Swipe
View article: The fates of merging supermassive black holes and a proposal for a new class of X-ray sources
The fates of merging supermassive black holes and a proposal for a new class of X-ray sources Open
We perform N-body simulations on some of the most massive galaxies extracted from a cosmological simulation of hierarchical structure formation with total masses in the range 1012 M⊙ < Mtot < 3 × 1013 M⊙ from 4 ≥ z ≥ 0. After galacti…
View article: Quantifying tidal stream disruption in a simulated Milky Way
Quantifying tidal stream disruption in a simulated Milky Way Open
Simulations of tidal streams show that close encounters with dark matter subhaloes induce density gaps and distortions in on-sky path along the streams. Accordingly, observing disrupted streams in the Galactic halo would substantiate the h…
View article: Formation of Massive Black Holes in Galactic Nuclei: Runaway Tidal Encounters
Formation of Massive Black Holes in Galactic Nuclei: Runaway Tidal Encounters Open
Nuclear star clusters (NSCs) and supermassive black holes (SMBHs) both inhabit galactic nuclei, coexisting in a range of bulge masses, but excluding each other in the largest or smallest galaxies. We propose that the transformation of NSCs…
View article: Direct N-body simulations of globular clusters -- III. Palomar\\,4 on an\n eccentric orbit
Direct N-body simulations of globular clusters -- III. Palomar\\,4 on an\n eccentric orbit Open
Palomar 4 is a low-density globular cluster with a current mass $\\approx30000\nM_{\\odot}$ in the outer halo of the Milky Way with a two-body relaxation time\nof the order of a Hubble time. Yet, it is strongly mass segregated and contains…
View article: Direct N-body simulations of globular clusters – III. Palomar 4 on an eccentric orbit
Direct N-body simulations of globular clusters – III. Palomar 4 on an eccentric orbit Open
Palomar 4 is a low-density globular cluster with a current mass $\approx30000 M_{\odot}$ in the outer halo of the Milky Way with a two-body relaxation time of the order of a Hubble time. Yet, it is strongly mass segregated and contains a s…
View article: Exploding Satellites -- The Tidal Debris of the Ultra-Faint Dwarf Galaxy Hercules
Exploding Satellites -- The Tidal Debris of the Ultra-Faint Dwarf Galaxy Hercules Open
The ultra-faint satellite galaxy Hercules has a strongly elongated and irregular morphology with detections of tidal features up to 1.3 deg (3 kpc) from its center. This suggests that Hercules may be dissolving under the Milky Way's gravit…