okt 082012
 
How pulsars slow down with age

  Researchers at the University of Southampton have developed a model which explains how the spin of a pulsar slows down as the star gets older. The famous Crab Nebula (M1, NGC 1952 or Taurus A) is the remnant of SN 1054, a pulsar wind nebula with a diameter of 11 light-years, located in the Perseus Arm [continue reading]

jun 062012
 
ALMA Telescope Gets Upgrade to Power New Science

  Before its construction is even completed, the new telescope ALMA — the Atacama Large Millimeter/submillimeter Array — is embarking on an upgrade that will help astronomers investigate the earliest galaxies and search for water in other planetary systems. The oversight board for ALMA has authorised the design and building of an additional set of [continue reading]

apr 072012
 
Measuring Magnetic Fields

Polarized light is a familiar phenomenon, as people who prefer polarized sunglasses can testify. The electric field in a beam of light can vibrate either left-right or up-down, and the scattering or reflection of light can result in the preferential absorption of one or the other of these two “polarizations.” The majority of sunlight on [continue reading]