Chandra Observations of WR147 Reveal a Double X-ray Source

Details Chandra Observations of WR147 Reveal a Double X-ray Source Chandra Observations of WR147 Reveal a Double X-ray Source

2009-12-17

arxiv.org/abs/0912.3554v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

15 pages, 3 figures, To Appear in The Astrophysical Journal Letters

Scientific paper

We report the first results from deep X-ray observations of the Wolf-Rayet binary system WR147 with the Chandra HETG. Analysis of the zeroth order data reveals that WR147 is a double X-ray source. The northern counterpart is likely associated with the colliding wind region, while the southern component is certainly identified with the WN star in this massive binary. The latter is the source of high energy X-rays (including the Fe K_alpha complex at 6.67 keV) whose production mechanism is yet unclear. For the first time, X-rays are observed directly from a WR star in a binary system.

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