When a star approaches a supermassive black hole closer than the tidal radius,the star can be deformed and disrupted by the tidal field of the massive hole.
The H2O megamaser technique provides a unique method to directly image the subparsec scale gas disks around the supermassive black hole(BH)at the center of
We discuss the classical proximal point algorithm (PPA) with a metric proxi-mal parameter in the variational inequality context.The metric proximal parame-ter i