HESS J1702-420 XMM-Newton images

We carried out a 72ks X-ray observation with the XMM-Newton satellite and analyzed the resulting data jointly with the publicly available H.E.S.S. spectral energy distribution (SED) results to derive constraints on the leptonic contribution to the TeV emission of HESS J1702-420A. A set of scripts dedicated to the multi-wavelength modeling of X-ray and gamma-ray data, based on Gammapy, Naima, and Xspec, has been developed in the context of this work and made publicly available along with this paper.

No object clearly associated with HESS J1702-420A was found in the XMM-Newton data. After excluding the unidentified object Suzaku src B as a possible X-ray counterpart and classifying it as a new cataclysmic variable source candidate, we derived strict upper limits on the level of diffuse X-ray emission in the HESS J1702-420A region: F(2-10keV)<~5.4x10^-5^keV/cm^2^/s at 2{sigma} (~95.5%) confidence level. A tight constraint on the magnetic field was derived, under a one-zone leptonic scenario, by jointly fitting the XMM-Newton spectra and the H.E.S.S. SED: B<~1.45uG at 2{sigma} level.