This black hole is tipped on its side relative to its companion's orbit. Do we need new models to explain this pronounced misalignment?
The planets in our Solar System all rotate on axes that roughly match the Sun’s rotational axis. This agreement between the axes of rotation is the typical arrangement in any system in space where smaller objects orbit a larger one.
But in a distant binary object called MAXI J1820+070, something’s amiss. A companion star orbits a stellar-mass black hole, but the black hole’s spin axis is different than the star’s orbital plane by 40 degrees. What could’ve caused the black hole to tilt like this? This image shows the Milky Way with MAXI-J1820+070’s position marked by a white cross. The inset image is a Chandra X-ray Observatory image of the binary object. Image Credit: Chandra X-ray Observatory ACIS Image
The mass accretion creates the jets, and by monitoring the jets, astrophysicists learn a lot about the black hole. “Now we see the black hole dragging matter from the nearby, lighter companion star orbiting around it. We see bright optical and X-ray radiation as the last sigh of the infalling material, and also radio emission from the relativistic jets expelled from the system,” Poutanen said in aThe relativistic jets of material give scientists a way to study the system.
“Together with a previously obtained orientation of the relativistic jet and the inclination of the orbit, this
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