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Revisiting hypervelocity stars after Gaia DR2
Douglas Boubert, James Guillochon, Keith Hawkins +3
Hypervelocity stars are intriguing rare objects traveling at speeds large enough to be unbound from the Milky Way. Several mechanisms have been proposed for producing them, includi…
OGLE16aaa - a Signature of a Hungry Super Massive Black Hole
Łukasz Wyrzykowski, M. Zieliński, Z. Kostrzewa-Rutkowska +22
We present the discovery and first three months of follow-up observations of a currently on-going unusual transient detected by the OGLE-IV survey, located in the centre of a galax…
The Fastest Unbound Stars in the Universe
James Guillochon, Abraham Loeb
The discovery of hypervelocity stars (HVS) leaving our galaxy with speeds of nearly km s has provided strong evidence towards the existence of a massive compact obj…