Shock-Cloud Interaction in RX J1713.7−3946: Evidence for Cosmic-Ray Acceleration in the Young VHE γ-ray Supernova Remnant

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Springer, Nov 14, 2016 - Science - 134 pages

This book presents a study of the young supernova remnant RX J1713.7-3946 in order to reveal the origin of cosmic rays in our galaxy. The study focuses on the X-ray and gamma radiation from the cosmic ray electrons and protons in the supernova remnant as well as the emission from the surrounding interstellar gas measured by the NANTEN2 4-m radio telescope at Nagoya University. The gamma rays show a good spatial correspondence with the interstellar gas, which for the first time provides strong evidence of the acceleration of cosmic ray protons. Additionally, the author determines that an interaction between the supernova shockwaves and interstellar gas, referred to as “shock-cloud interaction,” promotes the efficient acceleration of cosmic ray electrons in the supernova remnant. The book reveals that the interstellar gas plays an essential role in producing the high-energy radiation and cosmic rays, offering vital new insights into the origin and behavior of galactic cosmic rays.

 

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Contents

1 Introduction
1
2 Nonthermal XRay Enhancement Around Dense Gas Clumps
25
3 Evidence for the Acceleration of Cosmic Ray Protons
63
4 Evidence for Efficient Acceleration of Cosmic Rays
85
5 Summary and Future Prospects
105
Appendix A Velocity Channel Distributions in RX J171373946
115
Appendix B Expanding Motion of the Dark Hi SE Cloud
122
Appendix C Analysis of the Hi Emission The Optically Thin Case
127
Appendix D The Background Level of XRays
130
Appendix E XRay Absorption by the ISM Affects the XRay Images
131
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