Sgr A* – the supermassive black hole sitting in the center of the Milky Way – is often referred to as a ‘starved’ black hole, meaning that it swallows very little of the nearby cosmic gas and dust. The authors of this paper observed Sgr A* with the Chandra X-ray telescope for 3 mega seconds, throughout which only 1% of the gas available to Sgr A* actually accreted onto the black hole. It swallows cold gas, while rejecting hot gas – ejecting the matter back into space.
Maksym et al. investigate a possible tidal flare event in Abell 1795.
In this paper, the authors use near-IR imaging and spectroscopy to determine if G2, a galactic center source about to approach our galaxy’s supermassive black hole, is a gas cloud or a star.
New Observations suggest that we may have just witnessed the relativistic jet associated with the tidal disruption event Sw 1644+57 (first observed in March of 2011) turn off.
Weighing in at 17 billion solar masses, NGC 1277 contains the largest black hole discovered to date. What makes this black hole exceptional it not just its size, but also that it does not seem to follow the relationship between most supermassive black holes and their host galaxies known as the M-sigma relation. The author’s discuss their findings and possible implications.
We know most galaxies host supermassive black holes at their centers, but how do they get so big? In this study, the authors investigate one of the smallest known supermassive black holes (weighing in at only 100,000 solar masses), to shed some light on what a young, accreting black hole might look like.
Paper Title: Disruption of a Proto-Planetary Disk by the Black Hole at the Milky Way Centre Authors: Murray-Clay, R. A. and Loeb, A. Institution: Harvard-Smithsonian Center for Astrophysics (CfA) If our solar system lives in suburbia, the center of our galaxy is a sprawling metropolis shining bright for all to see. The center of our […]
If there was a cosmic play with the universe as its stage and the celestial bodies as its actors, undoubtedly there would be one character more notorious than the rest; a villain feared by all: the infamous Black Hole. They are truly the things of nightmares, and for one little star out there, that nightmare came true.
Recent studies have revealed a surprising amount of activity happening in the heart of our own Milky Way. In this paper, Liu et al. explore the kinematics of the gas outside the most central regions of our galaxy, and reveal that the Galactic center is being fed even more material from the main structure of the Milky Way.