Astronomers using the National Science Foundation's Green Bank Telescope (GBT) have discovered a unique stellar system of two white dwarf stars and a superdense neutron star, all packed within a space smaller than Earth's orbit around the Sun.
An international team of scientists using a fleet of orbiting X-ray telescopes, including NASA's Swift and Chandra X-ray Observatory, has discovered a millisecond pulsar with a dual identity. In a feat that has never before been observed, the star readily shifts back and forth between two mutually exclusive styles of pulsed emission -- one in X-rays, the other in radio.
An international research team led by astronomers from the Max Planck Institute for Radio Astronomy recently used a collection of large radio and optical telescopes to investigate a pulsar and its white dwarf companion.
Astronomers are baffled by the discovery of a pulsar - a tiny spinning stars, heavier than the sun and smaller than a city - that emits different types of radiation at different times.
Three 'citizen scientists' putting their home computers to work when they would otherwise have been idle have discovered a rare rotating pulsar.