Eater

By Gregory Benford

Earth is under attack! A billions-of-years-old intelligent black hole has come to reap the planet, with no regard for the life upon it.
Just as this threat emerges, Dr. Ben Knowlton, astrophysicist, is in the midst of a consuming personal tragedy: his beloved wife Channing is dying of cancer.
Putting tragedy aside, Ben, along with other experts, gather to develop a defense against the relentless Eater. But what can puny humans do to stop Eater's inexorable advance?

This was an OK read. It is of the "hard science" genre of science fiction, a bit too technical for me.