Muramatsu Shigekiyo is a fictional character from the popular manga and anime series "JoJo's Bizarre Adventure," created by Hirohiko Araki. He appears in the story arc "Diamond is Unbreakable," which is the fourth part of the series. Muramatsu is notable for being a Stand user, and his Stand, called "Sheer Heart Attack," is a powerful and autonomous Stand that acts independently to attack targets.
Jo Dunkley is a noted astrophysicist and professor known for her research in cosmology and astrophysics. Her work often focuses on understanding the universe's large-scale structure, the formation of galaxies, and the cosmic microwave background radiation. Dunkley has contributed to various scientific endeavors and has also been involved in public outreach to explain complex scientific concepts to a broader audience. In addition to her research, she is associated with various academic institutions and has published numerous papers in scientific journals.