Abstract
It is a great pleasure for me to speak at this meeting. I was privileged to meet Zeldovich on several occasions and—like so many other cosmologists—my work has been very influenced by him. It is particularly appropriate for me to speak about primordial black holes since it was he who first drew attention to their importance some 25 years ago and, since then, Russian cosmologists have always played a prominent role in studying them. The topic is also of great personal interest since my first papers—written as a research student under Stephen Hawking—were on primordial black holes. In fact, I was fortunate enough to meet Zeldovich in the very first year of my research at an IAU meeting in Poland in 1973. Zeldovich's energy, enthusiasm and insights at that meeting made an indelible impression on me and he was just as inspiring when I met him for the last time at an IAU meeting in Hungary in 1987.