Walkabout the Galaxy
Oumaumua; black holes; dark matter
Astrophysics and Astronomy | Physics
That interstellar comet appears to have gotten its odd behavior from the natural rocket effect of hydrogen gas being released near the Sun and not, sadly, alien rocket technology. The universe is still a cool and interesting place, though, and a new clever measurement of stars orbiting black holes shows evidence for a pile-up of dark matter around the black holes, giving us another way to study this mysterious stuff.
For cool refreshment and to describe the electronic band structure of graphene and topological insulators, try a Dirac cone. Always available at two for the price of one, Dirac cones cool you down while describing two-dimensional materials. Ask now for a special deal to upgrade your three-dimensional Dirac cones to hypercones for your Dirac semi-metals. Dirac cones, seize the yay (Baskin Robbins).
© Joshua Colwell, All Rights Reserved
Length of Episode
Colwell, Joshua; Dove, Adrienne; and Martin, Audrey, "Oumuamua Explained and Dark Matter Near Black Holes" (2023). Walkabout the Galaxy Podcast. 233.