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SUMMARY:Fatal fate - a gas cloud on its way towards Galactic Center black 
 hole - Stefan Gillessen (MPE)
DTSTART:20131031T163000Z
DTEND:20131031T173000Z
UID:TALK43539@talks.cam.ac.uk
DESCRIPTION:In 2011\, we discovered a compact gas cloud (~TG2~T) with roug
 hly 3 Earth masses that is falling on a near-radial orbit toward the massi
 ve black hole in the Galactic Center. The orbit is well constrained an per
 icenter passage is predicted for early 2014. Our data beautifully show tha
 t G2 gets tidally sheared apart due to the massive black hole's force. Dur
 ing the next months\, we expect that in addition to the tidal effects\, hy
 drodynamics get important\, when G2 collides with the hot ambient gas arou
 nd Sgr A*. Simulations show that ultimately\, the cloud~Rs material will f
 all into the massive black hole. Predictions for the accretion rate and lu
 minosity evolution\, however\, are very difficult due to the many unknowns
 . Nevertheless\, this might be a unique opportunity in the next years to o
 bserve how gas feeds a massive black hole in a galactic nucleus.
LOCATION:Sackler Lecture Theatre\, IoA (tea at 4.00 pm)
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