Radio nebula discovered around the pulsar PSR J0855–4644

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Radio nebula discovered around the pulsar PSR J0855–4644

Post by Dragon on Thu Mar 22, 2018 4:37 pm

Using the Giant Metrewave Radio Telescope (GMRT) in India, an international team of astronomers has detected a diffuse radio emission forming a nebula around the pulsar PSR J0855–4644. The finding is reported March 9 in a paper published on the arXiv pre-print repository.

Discovered in 2003, PSR J0855–46444 is a young and energetic pulsar located some 3,000 light years away in the Vela region. Although the presence of an X-ray nebula surrounding this pulsar was detected by previous observations using NASA's Chandra X-ray observatory and ESA's XMM Newton spacecraft, there is an ongoing search for its radio counterpart.

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Re: Radio nebula discovered around the pulsar PSR J0855–4644

Post by Dragon on Thu Mar 22, 2018 4:38 pm


Credit: Maitra et al., 2018

A zoomed in view showing the radio nebula and the shell structure. The red cross marks the position of the pulsar as reported in Kramer et al. 2003.

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Re: Radio nebula discovered around the pulsar PSR J0855–4644

Post by Dragon on Thu Mar 22, 2018 4:43 pm



Radio nebula discovered around the pulsar PSR J0855–4644.

 
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Re: Radio nebula discovered around the pulsar PSR J0855–4644

Post by Dragon on Thu Mar 22, 2018 4:44 pm



An exceptional binary system containing a rapidly spinning neutron star underwent a dramatic change in behavior never before observed.

The pulsar's radio beacon vanished, while at the same time the system brightened fivefold in gamma rays, the most powerful form of light, according to measurements by NASA's Fermi Gamma-ray Space Telescope.

 
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Re: Radio nebula discovered around the pulsar PSR J0855–4644

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