Astrophysical Journal

Fermi finds a 'transformer' pulsar

(Phys.org) —In late June 2013, an exceptional binary containing a rapidly spinning neutron star underwent a dramatic change in behavior never before observed. The pulsar's radio beacon vanished, while at ...

Jul 22, 2014
4.8 / 5 (24) 7

Dating our galaxy's dormant volcano

(Phys.org) —A dormant volcano—a supermassive black hole—lies at the heart of our galaxy. Fresh evidence suggests that it last erupted two million years ago.

Sep 23, 2013
4.7 / 5 (24) 5 | with audio podcast

Research maps where stars are born

(Phys.org) —A University of Arizona-led group of astronomers has completed the largest-ever survey of dense gas clouds in the Milky Way – pockets shrouded in gas and dust where new stars are being born.

Oct 14, 2013
4.8 / 5 (21) 3 | with audio podcast

Rare case of gravitational lensing reported (Update)

(Phys.org) -- Seeing is believing, except when you don't believe what you see. Astronomers using NASA's Hubble Space Telescope have found a puzzling arc of light behind an extremely massive cluster of galaxies ...

Jun 26, 2012
4.8 / 5 (21) 52 | with audio podcast

Surprising trend in galaxy evolution (w/ Video)

(Phys.org)—A comprehensive study of hundreds of galaxies observed by the Keck telescopes in Hawaii and NASA's Hubble Space Telescope has revealed an unexpected pattern of change that extends back 8 billion ...

Oct 19, 2012
4.7 / 5 (21) 64 | with audio podcast

Massive black hole duo: Possible sighting by WISE

(Phys.org) —Astronomers have spotted what appear to be two supermassive black holes at the heart of a remote galaxy, circling each other like dance partners. The incredibly rare sighting was made with the ...

Dec 04, 2013
4.1 / 5 (24) 19 | with audio podcast