News tagged with astrophysical journal

Accreting black holes in galaxies

(Phys.org) -- Seyfert galaxies are like normal galaxies, our own Milky Way included, except in one critical respect: their nuclei are fantastically bright. In some instances they are as luminous as 100 billion ...

Jun 28, 2012
5 / 5 (3) 9 | with audio podcast

Radio galaxies in the distant universe

(Phys.org) -- For over a decade astronomers have been probing a region of the northern sky, not far from the handle of the Big Dipper, that is relatively free of bright stars and the diffuse glow of the Milky ...

Jun 26, 2012
4.8 / 5 (6) 0 | with audio podcast

ASU astronomers discover faintest distant galaxy

Astronomers at Arizona State University have found an exceptionally distant galaxy, ranked among the top 10 most distant objects currently known in space. Light from the recently detected galaxy left the object ...

Jun 01, 2012
4.7 / 5 (7) 10 | with audio podcast

Ghostly gamma-ray beams blast from Milky Way's center

(Phys.org) -- As galaxies go, our Milky Way is pretty quiet. Active galaxies have cores that glow brightly, powered by supermassive black holes swallowing material, and often spit twin jets in opposite directions. ...

May 29, 2012
4.2 / 5 (11) 16 | with audio podcast

Herschel reveals galaxy-packed filament

(Phys.org) -- A McGill-led research team using the Herschel Space Observatory has discovered a giant, galaxy-packed filament ablaze with billions of new stars. The filament connects two clusters of galaxies ...

May 17, 2012
4.6 / 5 (9) 4 | with audio podcast

Old star, new trick

The Big Bang produced lots of hydrogen and helium and a smidgen of lithium. All heavier elements found on the periodic table have been produced by stars over the last 13.7 billion years. Astronomers analyze starlight to determine ...

Apr 30, 2012
5 / 5 (10) 30 | with audio podcast

Wise catches aging star erupting with dust

(Phys.org) -- Images from NASA's Wide-field Infrared Survey Explorer (WISE) reveal an old star in the throes of a fiery outburst, spraying the cosmos with dust. The findings offer a rare, real-time look at ...

Apr 26, 2012
3.3 / 5 (3) 1 | with audio podcast

Astronomers identify three extrasolar planets

(Phys.org) -- It's not little green men, but it could be a step in that direction: Cornell astronomers, using data from the NASA Kepler Mission, have identified three Earthlike planets orbiting their own suns, all of which ...

Apr 26, 2012
5 / 5 (7) 1 | with audio podcast