Recent content by icalle3

Hi guys, I'm new here. I am doing my final degree project and it's hard for me to understand what this paragraph means in one of the papers that I'm reading, it's about primordial black hole formation. [Talking about a spherically density perturbation] The rarefaction wave starts at the surface...

Hi! I'm a physicist student in University of Barcelona and I'm struggling with my final degree project, that's why I registered here. :) Hope I can find some help!