Progressive steepening of the SNR RX J1713.7-3946 X-ray spectrum from XMM-Newton to INTEGRAL

Abstract

In this work, we present the first detailed analysis of the supernova remnant RX J1713.7-3946 in the hard X-ray energy range with the IBIS coded-mask telescope on board the INTEGRAL observatory. The shell-type morphology of the entire remnant is mapped in hard X-rays for the first time and significantly detected up to 50 keV. The IBIS sky image of RX J1713.7-3946, accumulated over 14 years of operations, demonstrates two extended hard X-ray sources. These sources are spatially consistent with northwest and southwest rims of RX J1713.7-3946 and are also clearly visible at energies below 10 keV with XMM-Newton. This points to a single emission mechanism operating in soft and hard X-rays. The INTEGRAL 17-120 keV spectrum of RX J1713.7-3946 is characterized by a power-law continuum with the photon index of $\Gamma \approx 3$, that is significantly softer than $\Gamma \approx 2$ determined by XMM-Newton in the 1-10 keV energy range, suggesting a progressive steepening of the spectrum with the energy.

arXiv comment10 pages, 12 figures, 5 tables. Accepted to MNRAS

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• The Hunt for Pevatrons: The Case of Supernova Remnants
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• ALMA CO Observations of the Gamma-Ray Supernova Remnant RX J1713.7-3946: Discovery of Shocked Molecular Cloudlets and Filaments at 0.01 pc scales
• Gamma rays and neutrinos from RX J1713.7-3946 in a lepto-hadronic scenario
• Radial Profiles of Non-thermal Emission from Supernova Remnant RX J1713.7-3946
• Search for Nonthermal X-ray Emission in the Ophiuchus Galaxy Cluster
• INTEGRAL View of TeV Sources: A Legacy for the CTA Project