XMM-Newton Observations Reveal the X-ray Counterpart of the Very-high-energy Gamma-ray Source HESS J1640-465

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  • XMM-Newton Observations Reveal the X-ray Counterpart of the Very-high-energy Gamma-ray Source HESS J1640-465 Book Detail

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  • Release Date : 2007
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  • File Size : 78,78 MB
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XMM-Newton Observations Reveal the X-ray Counterpart of the Very-high-energy Gamma-ray Source HESS J1640-465 by PDF Summary

Book Description: We present X-ray observations of the as of yet unidentified very high-energy (VHE) [gamma]-ray source HESS J1640-465 with the aim of establishing a counterpart of this source in the keV energy range, and identifying the mechanism responsible for the VHE emission. The 21.8 ksec XMM-Newton observation of HESS J1640-465 in September 2005 represents a significant improvement in sensitivity and angular resolution over previous ASCA studies in this region. These new data show a hard-spectrum X-ray emitting object at the centroid of the H.E.S.S. source, within the shell of the radio Supernova Remnant (SNR) G338.3-0.0. This object is consistent with the position and flux previously measured by both ASCA and Swift-XRT but is now shown to be significantly extended. We argue that this object is very likely the counterpart to HESS J1640-465 and that both objects may represent the Pulsar Wind Nebula of an as of yet undiscovered pulsar associated with G338.3-0.0.

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