News tagged with infrared wavelengths

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A new class of extragalactic objects

A blazar is a galaxy with an intensely bright central nucleus containing a supermassive black hole, much like a quasar. The difference is that a blazar can emit light with extremely high energy gamma rays ...

Oct 29, 2012
3.9 / 5 (14) 1 | with audio podcast

Revealing a mini-supermassive black hole

One of the lowest mass supermassive black holes ever observed in the middle of a galaxy has been identified, thanks to NASA's Chandra X-ray Observatory and several other observatories. The host galaxy is ...

Oct 24, 2012
4.5 / 5 (4) 4 | with audio podcast

Twists and turns in interacting galaxies

(Phys.org)—Almost thirty years ago the Infrared Astronomy Satellite, IRAS, discovered that the universe contained many fabulously luminous galaxies, some of them more than a thousand times brighter than ...

Oct 08, 2012
5 / 5 (4) 3

Fireworks in the early universe

Galaxies in the early universe grew fast by rapidly making new stars. Such prodigious star formation episodes, characterized by the intense radiation of the newborn stars, were often accompanied by fireworks ...

Sep 28, 2012
5 / 5 (2) 1

Image: Hurricane Isaac at night

(Phys.org)—Early on August 29, 2012, the Visible Infrared Imaging Radiometer Suite on the Suomi-NPP satellite captured this nighttime view of Hurricane Isaac and the cities near the Gulf Coast of the United ...

Aug 30, 2012
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All about dust

(Phys.org)—The space between stars is not empty—it contains copious amounts of gas and dust. Astronomers estimate that about 5-10% of the total mass of our Milky Way galaxy is contained in the interstellar ...

Aug 28, 2012
5 / 5 (3) 3

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