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Complex rotational dynamics of the neutron star in Hercules X-1 revealed by X-ray polarization

IXPE has revealed how the spin of the accreting neutron star Hercules X-1 changes in three dimensions. The spin axis of the star moves both through the star and across the sky, hinting that the crust of the star is asymmetric by almost one part in a million.

Jeremy Heyl
Victor Doroshenko
Silvia Zane
Research18 Jun 2024
Nature Astronomy

Volume: 8, P: 1047-1053
Determination of X-ray pulsar geometry with IXPE polarimetry

X-ray polarimetry observations with the Imaging X-ray Polarimetry Explorer constrain the accretion geometry in an X-ray pulsar and provide evidence for a misalignment of the spin, magnetic and orbital axes in Her X-1.

Victor Doroshenko
Juri Poutanen
Fei Xie
Research24 Oct 2022
Nature Astronomy

Volume: 6, P: 1433-1443
Halide homogenization for low energy loss in 2-eV-bandgap perovskites and increased efficiency in all-perovskite triple-junction solar cells

Wide-bandgap perovskite solar cells are limited by losses in open-circuit voltage. Wang et al. show that diammonium halide salts promote a homogeneous distribution of halides in the perovskite, improving the performance of single- and triple-junction solar cells.

Junke Wang
Lewei Zeng
Edward H. Sargent
Research16 Nov 2023
Nature Energy

Volume: 9, P: 70-80
Antiflammatory activity and potential dermatological applications of characterized humic acids from a lignite and a green compost

Mariavittoria Verrillo
Melania Parisi
Alessandro Piccolo
ResearchOpen Access09 Feb 2022
Scientific Reports

Volume: 12, P: 1-13

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Complex rotational dynamics of the neutron star in Hercules X-1 revealed by X-ray polarization

Determination of X-ray pulsar geometry with IXPE polarimetry

Halide homogenization for low energy loss in 2-eV-bandgap perovskites and increased efficiency in all-perovskite triple-junction solar cells

Antiflammatory activity and potential dermatological applications of characterized humic acids from a lignite and a green compost

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