Today’s paper explores the galactic homes of superluminous supernovae — some of the brightest explosions in our universe.
The authors use measurements of heavy element abundances to study the history of how and when the Milky Way became enriched in heavy elements. Specifically, they are concerned with elements formed through slow and fast neutron capture.
The energy injected into galaxies from dying stars through supernovae plays an important role in how they evolve in a process known as feedback. However, cosmic rays generated by supernovae may be equally important in constructing a complete picture of galaxy evolution. The authors of today’s astrobite investigate this by producing hydrodynamics simulations including supernovae, cosmic rays, and magnetic fields.
Star formation and supernova explosions play an important role in galaxy formation and evolution, in a process known as feedback. Today’s astrobite discusses how modifying the amount of feedback from supernova explosions affects the properties of the disc of a Milky Way galaxy, and how it affects the hot, gaseous halo surrounding massive galaxies.
More than 50 years ago, a Norwegian astronomer named Sjur Refsdal outlined an interesting new method for calculating the Hubble constant. Last November, astronomers found the perfect test case.
Dark matter, in the form of primordial black holes, can potentially trigger Type Ia supernovae in white dwarfs.