How many speed of pulsar
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Observations using the Very Large Array (orange) reveal the needle-like trail of pulsar J0002+6216 outside the shell of its supernova remnant, shown in an image from the Canadian Galactic Plane Survey. The pulsar escaped the remnant some 5,000 years after the supernova explosion (Jayanne English, University of Manitoba; F. Schinzel et al.; NRAO/AUI/NSF; DRAO/Canadian Galactic Plane Survey; and NASA/IRAS).
Astronomers have used the Very Large Array (VLA) telescopes to find a pulsar speeding away from its presumed birthplace at nearly 700 miles per second, with its trail pointing directly back at the centre of a shell of debris from the supernova explosion that created it.
The discovery provides vital new insights into how pulsars — superdense neutron stars left over after a massive star explodes — can get a speed boost from the explosion.
Frank Schinzel, from the National Radio Astronomy Observatory (NRAO, says: “This pulsar has completely escaped the remnant of debris from the supernova explosion.
“It’s very rare for a pulsar to get enough of a kick for us to see this.”
The pulsar, dubbed PSR J0002+6216, about 6,500 light-years from Earth, was discovered in 2017 by a citizen-science project called Einstein@Home — which uses computer time donated by volunteers to analyze data from NASA’s Fermi Gamma-ray Space Telescope. So far, using more than 10,000 years of computing time, the project has discovered a total of 23 pulsars.