Erratic Black Hole Regulates Itself
This optical and infrared image from the Digitized Sky Survey shows the crowded field around the micro-quasar GRS 1915+105 (GRS 1915 for short) located near the plane of our Galaxy. The inset shows a close-up of the Chandra image of GRS 1915, one of the brightest X-ray sources in the Milky Way galaxy. This micro-quasar contains a black hole about 14 times the mass of the Sun that is feeding off material from a nearby companion star. As the material swirls toward the black hole, an accretion disk forms. Powerful jets have also been observed in radio images of this system, along with remarkably unpredictable and complicated variability ranging from timescales of seconds to months.
-Kimberly Arcand, CXC
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