News tagged with radio telescopes

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A multi-wavelength view of radio galaxy Hercules A

(Phys.org)—Spectacular jets powered by the gravitational energy of a super massive black hole in the core of the elliptical galaxy Hercules A illustrate the combined imaging power of two of astronomy's ...

Nov 29, 2012
5 / 5 (2) 51 | with audio podcast

Hubble traps galactic fireflies

(Phys.org)—Luminous galaxies glow like fireflies on a dark night in this image snapped by the NASA/ESA Hubble Space Telescope. The upper central galaxy in this image is a gigantic elliptical galaxy designated ...

Nov 18, 2012
5 / 5 (6) 7 | with audio podcast

Super-massive black hole inflates giant bubble

Like symbiotic species, a galaxy and its central black hole lead intimately connected lives. The details of this relationship still pose many puzzles for astronomers. Some black holes actively accrete matter. ...

Oct 29, 2012
4.9 / 5 (15) 108 | with audio podcast

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

Chile's ALMA probes for origins of universe

(AP)—Earth's largest radio telescope is growing more powerful by the day on this remote plateau high above Chile's Atacama desert, where visitors often feel like they're planting the first human footprints ...

Oct 26, 2012
4.7 / 5 (13) 5

A black widow's Tango Mortale in gamma-ray light

Pulsars are the compact remnants from explosions of massive stars. Some of them spin around their own axis hundreds of times per second, emitting beams of radiation into space. Until now, they could only ...

Oct 25, 2012
5 / 5 (7) 0 | with audio podcast

Galaxy harbors many star-snacking black holes

(Phys.org) -- Astronomers have found evidence of hundreds of black holes in a galaxy 250 million light years away. The discovery, made with a worldwide network of radio telescopes, gives scientists a new way ...

Jul 02, 2012
4.4 / 5 (9) 4 | with audio podcast

Has the speediest pulsar been found?

(Phys.org) -- NASA's Chandra X-ray Observatory and ESA's XMM-Newton in space, and the Parkes radio telescope in Australia -- may have found the fastest moving pulsar ever seen.

Jun 28, 2012
4.6 / 5 (9) 3 | 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