More than 100 massive stars orbit the supermassive black hole at the center of our galaxy incredibly closely.
Today’s astrobite is not about disc jockey insects informing us about spacetime. Read on to find out a novel way of detecting electromagnetic counterparts of merging supermassive black holes.
Dark matter, in the form of primordial black holes, can potentially trigger Type Ia supernovae in white dwarfs.
Cosmic reionization is a period in the Universe history when it switched from being predominantly neutral to mostly ionized. We still haven’t quite pinned down the source(s) that caused this transition, but we have our suspicions. It could be quasars. It could be galaxies. Or could it be something else?
[Figure from universe-review.ca/F05-galaxy06.htm]
By measuring the black hole mass and velocity dispersion of currently merging galaxies each in various stages of a merger, the authors conclude that the growth of the central super massive black hole occurs in the early stages of each merger and outpaces any bursts of star formation or central bulge growth.
Black holes are found in most galaxies. Observations suggest that they correlate with various properties of their host galaxies. Does this correlation hold in the very early Universe, particularly in galaxies hosting supermassive black holes? The answer is ….