Taking off the edge -- simultaneous filament and end core formation
  Simulations of idealised star-forming filaments of finite length typically
show core growth which is dominated by two cores forming at its respective end.
The end cores form due to a strong increasing acceleration at the filament ends
which leads to a sweep-up of material during the filament collapse along its
axis. As this growth mode is typically faster than any other core formation
mode in a filament, the end cores usually dominate in mass and density compared
to other cores forming inside a filament. However, observations of star-forming
filaments often do not show this prevalence of cores at the filament edges. We
use numerical simulations of accreting filaments forming in a finite converging
flow to explore a possible mechanism which leads to a suppression of the end
cores. While such a setup still leads to end cores that soon begin to move
inwards, the continued accumulation of material outside of these makes a key
difference: their positions now lie within the larger filamentary structure and
not at its edges. This softens their inward gravitational acceleration as they
are embedded by new material further out. As a result, these two cores do not
grow as fast as expected for the edge effect and thus do not dominate over
other core formation modes in the filament.
