Results 191 to 200 of about 287,620 (343)

The Influence of Thermonuclear Bursts on Polar Caps of the Accreting X-Ray Millisecond Pulsar MAXI J1816-195

open access: yesThe Astrophysical Journal Letters
We report accretion-powered pulsations for the first time during thermonuclear bursts in hard X-rays, which were observed with Insight-HXMT in 2022 during the outburst of the accreting X-ray millisecond pulsar MAXI J1816-195.
Long Ji   +6 more
doaj   +1 more source

X-ray polarization of accreting black holes: Cyg X-1 and Swift J1727.8-1613 [PDF]

open access: yesWDS'24 Proceedings of Contributed Papers, Physics (eds. J. Safrankova and J. Pavlu), Prague, Matfyzpress, pp. 178-184, 2024
The Imaging X-ray Polarimetry Explorer is an X-ray observatory measuring the X-ray polarization in the 2-8 keV energy range. Highly sensitive to the system's geometry, X-ray polarization is a unique method to probe the structure of X-ray binaries. The Imaging X-ray Polarimetry Explorer observed the High-Mass X-ray Binary Cygnus X-1 and the Low-Mass X ...
arxiv  

Discovery of a New Cu‐Based Chalcogenide with High zT Near Room Temperature: Low‐Cost Alternative for the Bi2Te3‐Based Thermoelectrics

open access: yesAdvanced Materials, EarlyView.
This study reports the discovery of a stable γ‐phase in Cu6Te3‐xS1+x, achieving high thermoelectric performance with a Seebeck coefficient up to 200 µVK⁻¹ and ultralow thermal conductivity (≈0.25 Wm⁻¹K⁻¹). The material eliminates phase transitions, exhibits a zT of ≈1.1 at 500 K, and offers a cost‐effective, eco‐friendly alternative for waste heat ...
Oleksandr Cherniushok   +3 more
wiley   +1 more source

Mechanical Homogenization Promoting Dual‐Directional Upcycling of Layered Oxide Cathodes

open access: yesAdvanced Materials, EarlyView.
This work introduces an efficient dual‐directional upcycling scheme enabled through a mechanical homogenization pretreatment. It enables various layered oxide cathodes to be reprocessed into fresh NCM cathodes with tailored Ni contents through boosted atomic diffusion in just 4 h of solid‐state sintering.
Nianji Zhang   +3 more
wiley   +1 more source

A binary pulsar in a 53-minute orbit. [PDF]

open access: yesNature, 2023
Pan Z   +17 more
europepmc   +1 more source

Continuous Gravitational Waves from Thermal Mountains on Accreting Neutron Stars: Effect of the Nuclear Pasta Phase

open access: yesThe Astrophysical Journal
As density increases, the shape of nuclei transitions to nonspherical “nuclear pasta” structures. The physical properties of the nuclear pasta, such as thermal conductivity and elasticity, have implications for detecting continuous gravitational waves ...
Hong-Bo Li   +3 more
doaj   +1 more source

Facile Preparation of Durable Multicolor Superhydrophobic Coatings for Concrete Protection

open access: yesAdvanced Materials Interfaces, EarlyView.
The colored superhydrophobic coatings (CSC)multi‐colored superhydrophobic coatings prepared by a simplified one‐step spraying method to demonstrate exceptional durability and stability following prolonged mechanical abrasion and tape stripping tests, as well as under a range of acidic, alkaline, and harsh environmental conditions.
Xueting Shi   +6 more
wiley   +1 more source

Typical X-Ray Outburst Light Curves of Aql X-1

open access: yesThe Astrophysical Journal
We show that the typical X-ray outburst light curve of Aql X-1 can be reproduced by accretion onto a neutron star in the frame of the disk instability model without invoking partial accretion or the propeller effect.
Ömer Faruk Çoban, Ünal Ertan
doaj   +1 more source

Nanoengineering of Chitosan Sponges Via Atomic Layer Deposition of ZnO for Water Remediation Technologies

open access: yesAdvanced Materials Interfaces, EarlyView.
Chitosan sponges are modified with ZnO through atomic layer deposition (ALD) to enhance water remediation. Characterization reveals the growth of defective ZnO, which improves the water stability of the sponges. The material's effectiveness is demonstrated through the removal of Direct Blue 78 dye and the photocatalytic degradation of Naproxen ...
Sara Lotito   +13 more
wiley   +1 more source

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