XSNAP: An X-ray Supernova Analysis Pipeline with Application to the Type II Supernova 2024ggi

2025/11/13 by Ferdinand, Jacobson-Galán, W. V., Kasliwal, M. M. +1
#FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Solar and Stellar Astrophysics (astro-ph.SR)

paper · doi:10.48550/arxiv.2511.10744

Abstract

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 ≈ 7.2 \rm Mpc) from \it Swift-XRT, \it Chandra and \it XMM, which cover ∼ 1 - 344 days since first light. We analyze these observations using a new open-source Python package called XSNAP, which standardizes a unified command-line interface for instrument-specific reduction and spectral extraction. XSNAP introduces application programming interfaces for per-epoch spectral modeling through PyXspec and 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±0.2)×10^-5 M_\odot \mathrmyr^-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).

Citations

• A Panchromatic View of Late-time Shock Power in the Type II Supernova 2023ixf
• Constraints on the progenitor and explosion of SN 2024ggi in harmony with pre-explosion detection and hydrodynamic simulations
• The Type II SN 2025pht in NGC 1637: A Red Supergiant with Carbon-rich Circumstellar Dust as the First JWST Detection of a Supernova Progenitor Star
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• A Multiwavelength Autopsy of the Interacting IIn Supernova 2020ywx: Tracing its Progenitor Mass-Loss History for 100 Years before Death
• Discovery and Extensive Follow-Up of SN 2024ggi, a nearby type IIP supernova in NGC 3621
• Unravelling the asphericities in the explosion and multi-faceted circumstellar matter of SN 2023ixf
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• The Red Supergiant Progenitor of Type II Supernova 2024ggi
• Chandra's insights into SN 2023ixf
• SNeSCOPE - a python package for shock cooling fitting using the model of Morag et al 2024
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• The prompt-afterglow connection in gamma-ray bursts: a comprehensive statistical analysis of Swift X-ray light curves
• emcee: The MCMC Hammer
• Supernova remnants: the X-ray perspective
• The Chemical Composition of the Sun
• Methods and results of an automatic analysis of a complete sample ofSwift-XRT observations of GRBs
• The Swift X-Ray Telescope

Cited by

• Late-time Hubble Space Telescope Ultraviolet Spectra of SN 2023ixf and SN 2024ggi Show Ongoing Interaction with Circumstellar Material

Related

• SN 2024ggi: another year, another striking Type II supernova
• XGA: A module for the large-scale scientific exploitation of archival X-ray astronomy data
• Swift Observations of X-ray supernovae
• X-ray Detection Of Presupernova Evolution For The Sn 1993j Progenitor
• SN 2024ggi in NGC 3621: Rising Ionization in a Nearby, CSM-Interacting Type II Supernova