A hypervelocity star with a Magellanic origin
  Using proper motion measurements from Gaia DR2, we probe the origin of 26
previously known hypervelocity stars (HVSs) around the Milky Way. We find that
a significant fraction of these stars have a high probability of originating
close to the Milky Way centre, but there is one obvious outlier. HVS3 is highly
likely to be coming almost from the centre of the Large Magellanic Cloud (LMC).
During its closest approach, $21.1^{+6.1}_{-4.6}$ Myr ago, it had a relative
velocity of $870^{+69}_{-66}$ kms$^{-1}$ with respect to the LMC. This large
kick velocity is only consistent with the Hills mechanism, requiring a massive
black hole at the centre of the LMC. This provides strong direct evidence that
the LMC itself harbours a massive black hole of at least $4\times 10^3 -10^4
M_\odot$.
