Multipole Analysis and Application to Supernova Remnant X-Ray Images

D. A. Leahy; S. Ranasinghe; J. Hansen; M. D. Filipović; Z. Smeaton

doi:10.1088/1538-3873/addb78

Multipole Analysis and Application to Supernova Remnant X-Ray Images

D. A. Leahy, S. Ranasinghe, J. Hansen, M. D. Filipović, Z. Smeaton

University of Calgary

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

We develop a multipole analysis method for images with a circular boundary, then apply it to supernova remnant (SNR) images. The morphology of SNR images is related to several factors, including the inhomogeneities of the supernova ejecta and of the circumstellar medium in which the ejecta and shock wave travel. The current multipole method corrects some errors in a previously presented method, and applies the new analysis to test for differences in X-ray image morphology between Type Ia and core-collapse type SNRs. We find there is no clear difference between the two SNR types in morphology as measured by multipole moments.

Original language	English
Article number	064502
Number of pages	12
Journal	Publications of the Astronomical Society of the Pacific
Volume	137
Issue number	6
DOIs	https://doi.org/10.1088/1538-3873/addb78
Publication status	Published - 1 Jun 2025

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AU - Leahy, D. A.

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AU - Hansen, J.

AU - Filipović, M. D.

AU - Smeaton, Z.

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AB - We develop a multipole analysis method for images with a circular boundary, then apply it to supernova remnant (SNR) images. The morphology of SNR images is related to several factors, including the inhomogeneities of the supernova ejecta and of the circumstellar medium in which the ejecta and shock wave travel. The current multipole method corrects some errors in a previously presented method, and applies the new analysis to test for differences in X-ray image morphology between Type Ia and core-collapse type SNRs. We find there is no clear difference between the two SNR types in morphology as measured by multipole moments.

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Multipole Analysis and Application to Supernova Remnant X-Ray Images

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