Physical Review D

Fermi data tantalize with new clues to dark matter

(Phys.org) —A new study of gamma-ray light from the center of our galaxy makes the strongest case to date that some of this emission may arise from dark matter, an unknown substance making up most of the ...

Apr 03, 2014
4.4 / 5 (27) 8

The largest magnetic fields in the universe

An ultradense ("hypermassive") neutron star is formed when two neutron stars in a binary system finally merge. Its short life ends with the catastrophic collapse to a black hole, possibly powering a short ...

Jul 26, 2013
5 / 5 (21) 27

Big Bang theory challenged by big chill

(Phys.org) -- The start of the Universe should be modeled not as a Big Bang but more like water freezing into ice, according to a team of theoretical physicists at the University of Melbourne and RMIT University.

Aug 20, 2012
3.4 / 5 (29) 87

Solving the riddle of neutron stars

It has not yet been possible to measure the gravitational waves predicted by Einstein's theory of general relativity. They are so weak that they get lost in the noise of the measurements. But thanks to the ...

Mar 10, 2015
4.6 / 5 (21) 8