Monsters in miniature
Could intermediate-mass black hole activity resolve the long-standing problems with dwarf galaxies in cosmological simulations?
Astrobites at AAS 233: Day 3
We report on Day 3 of the winter AAS meeting in Seattle, WA. Highlights include updates in X-ray astronomy, the discovery of a second repeating FRB, an exploration of astrochemistry in planet-forming disks, and a look at the 2020 Astronomy Decadal Survey.
Glimpsing the fingerprints of gravitational waves in the early universe
Scientists can use neural networks to glimpse gravitational wave fluctuations from the early universe.
Zoos, Swamplands and Cosmology
Is string theory compatible with observational data? Today’s paper looks at how avoiding the swampland of unsuccessful string theories can mean violating reliable constraints on cosmological quantities.
Ideal cosmic yardstick: neutron star black hole mergers as standard sirens
Neutron star black hole mergers are an ideal way to measure the Hubble constant.
Satellite Galaxies All in a Row—How So?
Many satellite galaxies in the local universe are orbiting their parent galaxies in highly coherent planes—yet such structures are vanishingly rare in simulations. What gives?