In an excellent review paper, Dr. Antoine Kouchnera reviews the state of the Northern Hemisphere neutrino detectors and all that has been discovered by them to date. The reasons for the interest in neutrino astronomy and the detection techniques utilized are presented briefly but thoroughly in the paper available online now here. The author notes that “the Antares collaboration has completed the construction of a 12 line array comprising ~ 900 photomultipliers” while astronomers await the latest neutrino detector work in the Mediterranean.
Another chapter in cosmology begins with the first results, available online now here, from Cerro Toco in Chile, from the Atacama Cosmology Telescope (ACT) a cosmic microwave background experiment. From its vantage point some 5200 meters above the Earth’s surface, ACT will provide astronomers with arcminute resolution capability in the frequencies of 148GHz, 218GHz, and 277GHz.