With deep sadness we inform you that our colleague Leonid Grishchuk passed away in his sleep, on 13 September 2012, 2:25 am, after a brief battle with brain cancer. He leaves behind three daughters: Ekaterina Grishchuk, Alexandra Grishchuk, and Olga Grishchuk. One of us (Sathya) is collecting messages of condolence, which we will forward to them. Please send messages to B.Sathyaprakash[AT]astro.cf.ac.uk.
You can read a brief scientific biography of Leonid at: http://www.astro.cf.ac.uk/pub/Leonid.Grishchuk/index.html