The most complete and detailed X-ray view of the SNR Puppis A
G. Dubner, N. Loiseau, P. Rodriguez-Pascual, M.J.S. Smith, E. Giacani,, G. Castelletti

TL;DR
This paper presents the most detailed X-ray imaging of the supernova remnant Puppis A, combining new and existing data to analyze its morphology, multi-wavelength features, and high-energy emission characteristics.
Contribution
It provides the first comprehensive full-view X-ray image of Puppis A, along with detailed morphological, spectral, and multi-wavelength analysis, including updated flux, luminosity, and particle energy estimates.
Findings
Puppis A exhibits complex, knotty structure in an inhomogeneous medium.
Strong correlation between X-ray and radio features indicating shock/cloud interactions.
Estimated total X-ray luminosity of 1.2 x 10^37 erg s^-1 at 2.2 kpc distance.
Abstract
With the purpose of producing the first detailed full view of Puppis A in X-rays, we carried out new XMM-Newton observations covering the missing regions in the southern half of the supernova remnant (SNR) and combined them with existing XMM-Newton and Chandra data. The new images were produced in the 0.3-0.7, 0.7-1.0 and 1.0-8.0 energy bands. We investigated the SNR morphology in detail, carried out a multi-wavelength analysis and estimated the flux density and luminosity of the whole SNR. The complex structure observed across the remnant confirms that Puppis A evolves in an inhomogeneous, probably knotty interstellar medium. The southwestern corner includes filaments that perfectly correlate with radio features suggested to be associated with shock/cloud interaction. In the northern half of Puppis A the comparison with Spitzer infrared images shows an excellent correspondence between…
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