Hadronic gamma-rays from RX J1713.7-3946?

Abstract

RXJ1713.7-3946 is a key object to check the supernova remnant paradigm of the origin of Galactic cosmic rays. While the origin of its gamma-ray emission (hadronic versus leptonic) is still debated, the hard spectrum at GeV energies reported by the Fermi collaboration is generally interpreted as a strong argument in favor of a leptonic scenario. On the contrary, we show that hadronic interactions can naturally explain the gamma-ray spectrum if gas clumps are present in the supernova remnant shell. The absence of thermal X-rays from the remnant fits well within this scenario.

arXiv comment4 pages, 2 figures. submitted

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• Gamma rays from molecular clouds
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• Gamma ray emission from SNR RX J1713.7-3946 and the origin of galactic cosmic rays
• A Detailed Study of Molecular Clouds toward the TeV Gamma-Ray SNR G347.3-0.5
• In which shell-type SNRs should we look for gamma-rays and neutrinos from p-p collisions?
• Core-collapse model of broadband emission from SNR RX J1713.7-3946 with thermal X-rays and Gamma-rays from escaping cosmic rays
• Role of ejecta clumping and back-reaction of accelerated cosmic rays in the evolution of Type Ia supernova remnants
• Non-thermal X-rays and interstellar gas toward the γ-ray supernova remnant RX J1713.7-3946: Evidence for X-ray enhancement around CO and HI clumps
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• Acceleration of cosmic rays and gamma-ray emission from supernova remnants in the Galaxy
• 3 to 12 millimetre studies of dense gas towards the western rim of supernova remnant RX J1713.7-3946
• Cosmic Ray Electron Evolution in the Supernova Remnant RX J1713.7-3946
• Hadronic versus leptonic origin of the gamma-ray emission from Supernova Remnant RX J1713.7-3946
• Galactic Sources of High-Energy Neutrinos: Highlights

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• G17.8+16.7: A New Supernova Remnant
• Constraining the coherence scale of the interstellar magnetic field using TeV gamma-ray observations of supernova remnants
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• Searching for an interstellar medium association for HESS J1534-571
• Study on the escape timescale of high-energy particles from supernova remnants through thermal X-ray properties
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• Constraining the origin of the puzzling source HESS J1640-465 and the PeVatron candidate HESS J1641-463 using Fermi-LAT observations
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