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.
Different methods of measuring the Hubble constant yield slightly different values, but they are still in reasonable agreement.
Time delays in the light from AGNs’ dusty torii can tell us the intrinsic luminosity and hence the distance to the AGN.
In today’s Astrophysical Classic, we hark back to 1987 and the introduction of a new method determining the age of the universe through the use of white dwarf stars.
High resolution computational simulations are a valuable means by which Astronomers test our understanding of the Universe, and make predictions. The world of computational astrophysics broke new ground recently with the highest resolution cosmological simulation to date, Illustris, making for some spectacular science and some spectacular images.
Can we find galaxies using the light emitted by their star forming regions? The authors of this paper explore a technique that would allow us to reach relatively unexplored epochs of the Universe.
Astronomers measure the randomness in the Cosmic Microwave Background radiation to determine the cause of an anomalously cold spot.
Much like the Cosmic Microwave Background, the Cosmic Neutrino Background permeates our Universe and it could take us back to 1 second after the Big Bang. Today, we discuss the effect of the Sun on modulating the expected signal from the neutrino background.
Why resort to complicated theories that involve mysterious, unknown forces and states of matter? The geocentric model of the Universe nicely explains 1st century C.E. data.