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Friday, November 4, 2011

ScienceDaily: Top Technology News

ScienceDaily: Top Technology News


City lights could reveal E.T. civilization

Posted: 03 Nov 2011 04:03 PM PDT

In the search for extraterrestrial intelligence, astronomers have hunted for radio signals and ultra-short laser pulses. Astronomers suggest a new technique for finding aliens: Look for their city lights.

Millisecond pulsar in spin mode: Gamma radiation of rapidly rotating neutron star casts doubt on origin models

Posted: 03 Nov 2011 01:18 PM PDT

Astronomers have tracked down the first gamma-ray pulsar in a globular cluster of stars. It is around 27,000 light years away and thus also holds the distance record in this class of objects. Moreover, its high luminosity indicates that J1823-3021A is the youngest millisecond pulsar found to date, and that its magnetic field is much stronger than theoretically predicted. This therefore suggests the existence of a new population of such extreme objects.

NASA's Fermi finds youngest millisecond pulsar, 100 pulsars to-date

Posted: 03 Nov 2011 12:46 PM PDT

An international team of scientists using NASA's Fermi Gamma-ray Space Telescope has discovered a surprisingly powerful millisecond pulsar that challenges existing theories about how these objects form.

Nine new gamma pulsars brings known gamma-ray pulsars to over 100

Posted: 03 Nov 2011 11:34 AM PDT

Pulsars are the lighthouses of the universe. These compact and fast-rotating neutron stars flash many times per second in the radio or gamma-ray band. Pure gamma-ray pulsars are extremely difficult to find despite their high energy because they radiate very few photons per unit of time. Using an improved analysis algorithm, scientists have now discovered a number of previously unknown gamma-ray pulsars with low luminosity in data from the Fermi satellite. These pulsars had been missed using conventional methods. The number of known gamma-ray pulsars has thus grown to over 100.

Trillions served: Massive, complex projects for DOE JGI 2012 Community Sequencing Program

Posted: 03 Nov 2011 10:22 AM PDT

Taking advantage of massive-scale sequencing and data analysis capabilities, the US Department of Energy Joint Genome Institute will serve up trillions of nucleotides of information from newly-selected projects geared to feed the data-hungry worldwide research community. The total allocation for the 2012 Community Sequencing Program portfolio will exceed 30 trillion bases (terabases), a 100-fold increase compared with just two years ago, when just a third of a terabase was allocated to more than 70 projects.

Scientists study 'galaxy zoo' using Google Maps and thousands of volunteers

Posted: 03 Nov 2011 05:14 AM PDT

The reddest galaxies with the largest central bulb show the largest bars -- gigantic central columns of stars and dark matter -- according to a scientific study that used Google Maps to observe the sky. A group of volunteers of more than 200,000 participants of the galaxy classification project Galaxy Zoo contributed to this research.

The perfect clone: Researchers hack RFID smartcards

Posted: 03 Nov 2011 05:13 AM PDT

Professional safecrackers use a stethoscope to find the correct combination by listening to the clicks of the lock. Researchers have now demonstrated how to bypass the security mechanisms of a widely used contactless smartcard in a similar way. Employing so-called "Side-Channel Analysis" the researchers can break the cryptography of millions of cards that are used all around the world.

Observations of gamma-ray burst reveal surprising ingredients of early galaxies

Posted: 02 Nov 2011 06:29 AM PDT

Astronomers have used the brief but brilliant light of a distant gamma-ray burst as a probe to study the make-up of very distant galaxies. Surprisingly the new observations revealed two galaxies in the young Universe that are richer in the heavier chemical elements than the Sun. The two galaxies may be in the process of merging. Such events in the early Universe will drive the formation of many new stars and may be the trigger for gamma-ray bursts.

A Living Factory?

Posted: 02 Nov 2011 06:29 AM PDT

The time it takes for new products to come to market is getting ever shorter. As a consequence, goods are being produced using manufacturing facilities and IT systems that were designed with completely different models in mind. Developers want to make factories smarter so they can react to changes of their own accord.

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