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NASA’s NICER Finds X-ray Boosts in the Crab Pulsar’s Radio Bursts 5nvklj





NASA’s NICER Finds X-ray Boosts in the Crab Pulsar’s Radio Bursts 9tpt39

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NASA’s NICER Finds X-ray Boosts in the Crab Pulsar’s Radio Bursts

Dragon
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NASA’s NICER Finds X-ray Boosts in the Crab Pulsar’s Radio Bursts Empty NASA’s NICER Finds X-ray Boosts in the Crab Pulsar’s Radio Bursts

Post by Dragon Tue Apr 13, 2021 5:07 am

A pulsar is a type of rapidly spinning neutron star, the crushed, city-sized core of a star that exploded as a supernova.

A young, isolated neutron star can spin dozens of times each second, and its whirling magnetic field powers beams of radio waves, visible light, X-rays, and gamma rays.

If these beams sweep past Earth, astronomers observe clock-like pulses of emission and classify the object as a pulsar.

“Out of more than 2,800 pulsars cataloged, the Crab pulsar is one of only a few that emit giant radio pulses, which occur sporadically and can be hundreds to thousands of times brighter than the regular pulses,” said lead scientist Teruaki Enoto at the RIKEN Cluster for Pioneering Research in Wako, Saitama prefecture, Japan. “After decades of observations, only the Crab has been shown to enhance its giant radio pulses with emission from other parts of the spectrum.”


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NASA’s NICER Finds X-ray Boosts in the Crab Pulsar’s Radio Bursts 334pu7m
Dragon
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NASA’s NICER Finds X-ray Boosts in the Crab Pulsar’s Radio Bursts Empty Re: NASA’s NICER Finds X-ray Boosts in the Crab Pulsar’s Radio Bursts

Post by Dragon Tue Apr 13, 2021 5:08 am

NASA’s NICER Finds X-ray Boosts in the Crab Pulsar’s Radio Bursts Nicer_crab_data
Credits: NASA’s Goddard Space Flight Center/Enoto et al. 2021

Between 2017 and 2019, NASA’s Neutron star Interior Composition Explorer (NICER) and radio telescopes in Japan studied the Crab pulsar at the same time.

In this visualization, which represents just 13 minutes of NICER observations, millions of X-rays are plotted relative to the pulsar’s rotational phase, which is centered on the strongest radio emission.

For clarity, two full rotations are shown.

As the pulsar beams sweep across our line of sight, they produce two peaks for each rotation, with the brighter one associated with greater numbers of giant radio pulses.

For the first time, NICER data show a slight increase in X-ray emission associated with these events.


Source / Image Courtesy


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NASA’s NICER Finds X-ray Boosts in the Crab Pulsar’s Radio Bursts 334pu7m
Dragon
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NASA’s NICER Finds X-ray Boosts in the Crab Pulsar’s Radio Bursts Empty Re: NASA’s NICER Finds X-ray Boosts in the Crab Pulsar’s Radio Bursts

Post by Dragon Tue Apr 13, 2021 5:09 am



Scientists using data from NASA’s Neutron star Interior Composition Explorer (NICER) telescope on the International Space Station have discovered X-ray surges accompanying radio bursts from the pulsar in the Crab Nebula.

The finding shows that these bursts, called giant radio pulses, release far more energy than previously suspected.


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NASA’s NICER Finds X-ray Boosts in the Crab Pulsar’s Radio Bursts 334pu7m

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