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 ...

dateJul 22, 2014 in Astronomy
shares0 comments 7

Transiting exoplanet with longest known year

Astronomers have discovered a transiting exoplanet with the longest known year. Kepler-421b circles its star once every 704 days. In comparison, Mars orbits our Sun once every 780 days. Most of the 1,800-plus ...

dateJul 21, 2014 in Astronomy
shares0 comments 1

Hardy star survives supernova blast

(Phys.org) —When a massive star runs out fuel, it collapses and explodes as a supernova. Although these explosions are extremely powerful, it is possible for a companion star to endure the blast. A team ...

dateMar 20, 2014 in Astronomy
shares0 comments 0

Galaxies fed by funnels of fuel

(Phys.org) —Computer simulations of galaxies growing over billions of years have revealed a likely scenario for how they feed: a cosmic version of swirly straws.

dateMay 24, 2013 in Astronomy
shares0 comments 36

Giant black hole kicked out of home galaxy

(Phys.org) -- Astronomers have found strong evidence that a massive black hole is being ejected from its host galaxy at a speed of several million miles per hour. New observations from NASA's Chandra X-ray ...

dateJun 04, 2012 in Astronomy
shares0 comments 6

Was Kepler's supernova unusually powerful?

(Phys.org)—In 1604, a new star appeared in the night sky that was much brighter than Jupiter and dimmed over several weeks. This event was witnessed by sky watchers including the famous astronomer Johannes ...

dateSep 11, 2012 in Astronomy
shares0 comments 0