#sgr a

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They sure do! Sagittarius A* in particular has high alcohol tolerance, he loves his raspberry rum and croissants!

Aurhors: S. Gillessen, R. Genzel, T. K. Fritz, E. Quataert, C. Alig, A. Burkert, J. Cuadra, F. Eisenhauer, O. Pfuhl, K. Dodds-Eden, C. F. Gammie, T. Ott

(Submitted on 14 Dec 2011 to Nature)

Measurements of stellar orbits provide compelling evidence that the compact radio source Sagittarius A* at the Galactic Centre is a black hole four million times the mass of the Sun. With the exception of modest X-ray and infrared flares, Sgr A* is surprisingly faint, suggesting that the accretion rate and radiation efficiency near the event horizon are currently very low.

Here [in 2011] we report the presence of a dense gas cloud approximately three times the mass of Earth that is falling into the accretion zone of Sgr A*. Our observations tightly constrain the cloud's orbit to be highly eccentric, with an innermost radius of approach of only ~3,100 times the event horizon that will be reached in 2013.

Over the past three years the cloud has begun to disrupt, probably mainly through tidal shearing arising from the black hole's gravitational force. The cloud's dynamic evolution and radiation in the next few years will probe the properties of the accretion flow and the feeding processes of the super-massive black hole.

The kilo-electronvolt X-ray emission of Sgr A* may brighten significantly when the cloud reaches pericentre. There may also be a giant radiation flare several years from now [2013] if the cloud breaks up and its fragments feed gas into the central accretion zone.

A PDF is available here ... _________________________________

So, it's now 2013 ...  the dense gas cloud is getting very cozy with that supermassive black hole ...  

Galactic Gas Cloud Could Help Spot Hidden Black Holes

The heart of our Milky Way galaxy is an exotic place. It’s swarming with gigantic stars, showered by lethal blasts of high-energy radiation and a veritable cul-de-sac for the most enigmatic stellar corpses known to science: black holes. And at the center of the whole mélange is the granddaddy of all the black holes in the galaxy — Sagittarius A*,  a supermassive monster with 4 million times more mass than the Sun packed into an area smaller than the orbit of Mercury.