XMM-Newton finds the leader of the Magnificent Seven in a spin

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This image obtained by the ESOVLT ground observatory shows the region of the sky in which the neutron star RXJ1856 (indicated by the arrow in the yellow circle) is located. Credits: ESOVLT
This image, obtained by the ESO/VLT ground observatory, shows the region of the sky in which the neutron star RXJ1856 (indicated by the arrow in the yellow circle) is located. Credits: ESO/VLT

A decade-long mystery has been solved using data from ESA's X-ray observatory XMM-Newton. The brightest member of the so-called 'magnificent seven' has been found to pulsate with a period of seven seconds.


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