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Titolo: Modeling the interaction of a Supernova Remnant with the Circumstellar Medium – The case of the gamma-ray bright galactic supernova remnant RX J1713.7-3946

Abstract: SNRs are strongly characterized by their interaction with the circumstellar medium (CSM), often shaped by the mass loss history of the progenitor star, and with the ambient interstellar medium (ISM).
The aim of the thesis is to explore the physics of the interaction of a SNR with the CSM by examining a specific SNR through hydrodynamic (HD) numerical simulations. In particular, I focus on the remarkable Galactic SNR RX J1713.7-3946.
I will expose the results of hydrodynamics simulations regarding the formation of the CSM, the expansion of the SNR through the CSM and finally the interaction of the SNR with a molecular cloud. I will show the results of the synthesis of X-ray thermal emission from the outcome of those simulations.
Finally, I compare the X-ray thermal emission with actual X-ray observations of RX J1713. In particular, I show that the zero age main sequence mass of the progenitor of RX J1713 is of the order of 15 solar masses. Moreover, I derive that the explosion energy of the parent supernova is of the order of 1 FOE, while a highly energetic explosion (≥ 2 FOE) can be excluded. Finally, I obtain a tight constraint on the age of the remnant, which is of ∼ 2150 yr.