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X-ray image of Xi<sup>1</sup> CMa

X-ray image of Xi1 CMa


Date: 03 June 2014
Satellite: XMM-Newton
Depicts: X-ray image of B-type star Xi1 CMa
Copyright: ESA/XMM-Newton/L. Oskinova (University of Potsdam)

X-ray emission from the B-type star Xi1 Canis Majoris (Xi1 CMa) – seen in the centre of this image - has been measured using ESA's XMM-Newton observatory.

Xi1 CMa was observed continuously with XMM-Newton in October 2012 for almost 29 hours. These observations resulted in the first detection of pulsed X-ray emission from a non-degenerate, massive star.

Xi1 CMa is an extremely bright star with a surface temperature of approximately 27 500K, and a mass of approximately 15 times that of the Sun. It lies some 1400 light years away in the constellation Canis Major. The star has a notably strong magnetic field, about 5000 times stronger than our Sun's.

This 3-colour image of the field was made by mapping 0.2-1.0 keV emission to red, 1.0-2.5 keV emission to green, and 2.5-10.0 keV emission to blue. The field of view of this image is 19 arcmin × 19 arcmin (approximately 7.6 light years × 7.6 light years).

Last Update: 1 September 2019
15-Jul-2024 11:48 UT

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