Recently, a population of short (a few micro-seconds) and energetic radio bursts were identified at cosmological distances. Today’s paper hypothesizes that these “Fast Radio Bursts” may be created in the final moments of a neutron star merger.
Recent computer simulations are shedding light on the brightest and most energetic phenomena in the Universe – supernova explosions. A team of researchers at the Max Planck Institute for Astrophysics modeled the formation of neutron stars in three dimensions with unprecedented accuracy, showing that as matter is drawn inward, it sloshes both asymmetrically and in spiral motions. It’s a bold, new look into the center of the supernova explosion and the birth of a neutron star.
Last year on Christmas day, scientists observed a unique gamma-ray burst, GRB 101225A. Two interesting and very different models have developed for the ‘Christmas burst:’ a tidal disruption of a comet by a neutron star somewhere in our Galaxy, or a neutron star consuming its companion star over 5 billion light years away.
Nordhaus et al perform simulations to show that normal type II supernovae can produce pulsar kicks which match the observed velocities of neutron stars.
Title: Fermi Detectiqon of a Luminous γ–ray Pulsar in a Globular Cluster Authors: The Fermi LAT Collaboration Principle Investigator: Dr. Peter Michelson, Stanford University The Fermi Large Area Telescope, which was launched in 2008, is a gamma ray space telescope which can observe high-energy photons with energies ranging between 20 MeV and 300 GeV. These […]
This paper presents the first evidence of two distinct populations of pulsars, which the authors speculate stem from a difference in how they are formed.