Volume 482 - Frontier Research in Astrophysics – IV (FRAPWS2024) - High Energy Astrophysics
Hitomi HXT deconvolution imaging of the Crab Nebula
M. Morii*, Y. Maeda, H. Awaki, K. Hagino, M. Ishida and K. Mori
*: corresponding author
Full text: pdf
Published on: October 07, 2025
Abstract
We develop a new deconvolution method to recover the Crab Nebula image
taken by the Hitomi/HXT. To suppress the artifact due to the bright Crab pulsar
located at the center of the Crab Nebula, we extend the Richardson-Lucy method.
Here, we introduce two components corresponding to the nebula and pulsar with
regularization for smoothness and flux, respectively, and we perform combined
deconvolution of multi-pulse-phase images. At 3.6-15 keV band, we successfully
recover the structures of torus and jets, as seen in the Chandra X-ray image.
Above 15 keV, we confirm the NuSTAR's findings that the nebula size decreases
in higher energy bands.
DOI: https://doi.org/10.22323/1.482.0048
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