Explore an astrophysical classic describing the effect of the Universe’s expansion on the seeds of galaxies.
What can the growth of structure in the Universe tell us about how regular matter and dark matter scatter? The authors develop a simple framework and get model-independent constraints; read on for the answer.
Time delays in the light from AGNs’ dusty torii can tell us the intrinsic luminosity and hence the distance to the AGN.
BICEP2 results show a 5.3 sigma detection of gravitational waves from inflation’s imprint on the cosmic microwave background (CMB).
How do simulations of galaxy formation stack up against each other and against observations? Find out with the Aquila project, a comparo of many different codes in current use.
How quickly did the Universe become reionized? And how do we know? Find out with Hubble in today’s paper.
A relatively detailed discussion of a classic paper in cosmology, which basically covers everything you might want to know about how structure forms in the Universe on the very largest scales.
Measurements of the circular velocities in groups of galaxies can test whether our current cosmology is correct.
Bet there’s one thing you didn’t know about Kepler: it also tells us a lot about stars! Today, we discuss a paper that uses Kepler data to detect a star’s pulsations; much like humans, stars “breathe”!
Relative velocity in the early Universe between regular matter (baryons) and dark matter enhances an otherwise hard-to-detect signal and makes it likely we can look back even farther into the past.