Articles tagged "pulsar"

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Influx of Earth-bound positrons must have exotic origin, study suggests

The excess positrons arriving at Earth must have a more exotic origin than nearby pulsars, report researchers. Their results are based on observations from the High-Altitude Water Cherenkov (HAWC) gamma-ray observatory in Mexico, which detects the shower of...

November 18, 2017

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NuSTAR discovers first ultraluminous pulsar, impossibly bright dead star

Astronomers working with NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) have found a pulsating dead star beaming with the energy of about 10 million suns. The object, previously thought to be a black hole because it is so powerful, is in fact a pulsar - the

October 10, 2014

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Fermi catches a never before seen 'transformer' neutron star

In late June 2013 astronomers using Fermi Gamma-ray Space Telescope observed an exceptional binary containing a rapidly spinning neutron star which suddenly underwent a dramatic change in behavior. The pulsar's radio beacon vanished, while at the same time the

July 23, 2014

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The Quantum Guide - Pulsars

A pulsar is a neutron star that emits beams of radiation that sweep through Earth's line of sight. Like a black hole, it is an endpoint to stellar evolution. The "pulses" of high-energy radiation we see from a pulsar are due to a misalignment of the neutron star's

January 23, 2013