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Pulsars

X-ray polarimetry poses challenges in Her X-1

Preliminary observations from the Imaging X-ray Polarimetry Explorer of a well-studied X-ray pulsar are discordant with theoretical expectations, prompting a reassessment of our understanding of the accretion process.

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Fig. 1: Schematic structure of the accretion column in luminous accreting X-ray pulsars.

figure reproduced with permission from ref. 2, AAS

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Correspondence to Hua Feng.

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Feng, H. X-ray polarimetry poses challenges in Her X-1. Nat Astron 6, 1345–1346 (2022). https://doi.org/10.1038/s41550-022-01814-9

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