X-ray observations of Type II supernovae (SNe II) probe the physics of supernova (SN) shocks and the mass-loss histories of their progenitor stars. We present multi-epoch, X-ray observations of SN II 2024ggi ($D \approx 7.2 \ \rm Mpc$) from ${ \it Swift}$-XRT, ${ \it Chandra}$ and ${ \it XMM}$, which cover $\sim 1 - 344$ days since first light. We analyze these observations using a new open-source Python package called $\texttt{ XSNAP}$, which standardizes a unified command-line interface for instrument-specific reduction and spectral extraction. $\texttt{ XSNAP}$ introduces application programming interfaces for per-epoch spectral modeling through $\texttt{ PyXspec}$ and $\texttt{ emcee}$ Markov chain Monte Carlo fitting. We employ ${ \tt XSNAP}$ to model the multi-epoch X-ray spectra of SN 2024ggi with an absorbed thermal bremsstrahlung model and calculate a steady progenitor mass-loss rate of $(6.2\pm0.2)\times10^{ -5}\,M_{ \odot}\,\mathrm{ yr^{ -1}}$ $(v_{ \rm wind} = 20 \ \rm km \ s^{ -1})$, for which the detected X-ray emission traces the final 117 years before explosion. The software is publicly available on GitHub, with a released package on the Python Package Index (PyPI).
Categories: astro-ph.HE astro-ph.IM astro-ph.SR