Thursday, October 17, 2013

ScienceDaily: Cosmic Rays News

ScienceDaily: Cosmic Rays News

Sun's magnetic field going to flip soon: 11-year solar cycle wimpy, but peaking

Posted: 16 Oct 2013 06:24 PM PDT

In a 3-meter diameter hollow aluminum sphere, a physics professor is stirring and heating plasmas to 500,000 degrees Fahrenheit to experimentally mimic the magnetic field-inducing cosmic dynamos at the heart of planets, stars and other celestial bodies.

Sky survey captures key details of cosmic explosions

Posted: 16 Oct 2013 10:23 AM PDT

Developed to help scientists learn more about the complex nature of celestial objects, astronomical surveys have been cataloging the night sky since the beginning of the 20th century. The iPTF started searching the skies for certain types of stars and related phenomena in February. Since its inception, iPTF has been extremely successful in the early discovery and rapid follow-up studies of transients, and two recent papers by iPTF astronomers describe first-time detections.

New survey tools unveil two celestial explosions

Posted: 16 Oct 2013 10:22 AM PDT

A team of researchers used a novel astronomical survey software system -- the intermediate Palomar Transient Factory (iPTF) -- to link a new stripped-envelope supernova, named iPTF13bvn, to the star from which it exploded. The iPTF team also pinpointed the first afterglow of an explosion called a gamma-ray burst that was found by the Fermi satellite.

ALMA probes mysteries of jets from giant black holes

Posted: 16 Oct 2013 07:04 AM PDT

Astronomers have focused on jets from the huge black holes at the centers of galaxies and observe how they affect their surroundings. They have now obtained the best view yet of the molecular gas around a nearby, quiet black hole and caught an unexpected glimpse of the base of a powerful jet close to a distant black hole.
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