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Hard diffuse X-ray emission around the PSR J2032 4127: A pulsar wind nebula in the Cygnus OB2 association

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Abstract

  • The Cygnus OB2 region, ∼3.5−5 Myr old, contains one of the most significant populations of massive stars of the {Milky Way}. Such stars substantially contribute to producing large scale soft ({$3~\text{keV}$}) diffuse X-ray emission in the direction of the pulsar PSR J2032 4127. The torus-shaped emission spans a $\approx 3'\times 2'$ jet-like structure. It is spatially coincident with the Fermi $\gamma$-ray source 4FGL J2032.3 4127. We suggest that the hard diffuse X-ray emission is the pulsar wind nebula bearing the pulsar PSR J2032 4127, a consequence of a past {core-collapse} SN explosion in the region.

Publication Date

  • 2020

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