Results 171 to 180 of about 287,620 (343)

The Puzzling Superorbital Period Variation of the Low-mass X-Ray Binary 4U 1820–30

open access: yesThe Astrophysical Journal
Because of the previously observed stability of the 171 days period, the superorbital modulation of the low-mass X-ray binary 4U 1820–30 was considered a consequence of a third star orbiting around the binary.
Yi Chou   +3 more
doaj   +1 more source

Physical Environment of Accreting Neutron Stars

open access: yesAdvances in Astronomy, 2016
Neutron stars (NSs) powered by accretion, which are known as accretion-powered NSs, always are located in binary systems and manifest themselves as X-ray sources. Physical processes taking place during the accretion of material from their companions form
J. Wang
doaj   +1 more source

Adsorption and Separation by Flexible MOFs

open access: yesAdvanced Materials, EarlyView.
Flexible metal–organic frameworks (MOFs) present significant potential for gas storage and separation due to their structural dynamic. This review explores the rationale behind the flexible MOFs' enhanced working capacity and separation factors. It also addresses key challenges, including phase transition kinetics, crystal robustness, cycling, shaping,
Irena Senkovska   +4 more
wiley   +1 more source

Silicon K-edge Dust Properties of Neutron Star Low-mass X-ray Binaries

open access: yesProceedings of the International Astronomical Union, 2020
AbstractThe dust properties of the line-of-sight materials in neutron star low-mass X-ray binaries (LMXBs) can be probed by X-ray observations and laboratory experiments. We use a Markov chain Monte Carlo (MCMC) method to conduct a spectral analysis of Chandra ACIS-S/HETG archival data of a sample of LMXBs, including GX 5-1 and GX 13+1.
openaire   +2 more sources

Light‐Emitting Diodes Based on Metal Halide Perovskite and Perovskite Related Nanocrystals

open access: yesAdvanced Materials, EarlyView.
The review covers the past and current developments in light‐emitting diodes (LEDs) exploiting nanocrystals of halide perovskites and perovskite‐related materials. The review examines the aspects of material optimizations, device engineering, and applications.
Ying Liu   +7 more
wiley   +1 more source

High-energy Jet Emission from GRS 1758–258 and 1E 1740.7–2942 with INTEGRAL?

open access: yesThe Astrophysical Journal
GRS 1758–258 and 1E 1740.7–2942 are two long-known persistent black hole binaries in the Galactic center region. Using the International Gamma-Ray Astrophysics Laboratory (INTEGRAL)'s extensive monitoring of the Galactic center and bulge, we studied ...
James Rodi   +2 more
doaj   +1 more source

Van Der Waals Hybrid Integration of 2D Semimetals for Broadband Photodetection

open access: yesAdvanced Materials, EarlyView.
Advanced broadband photodetector technologies are essential for military and civilian applications. 2D semimetals, with their gapless band structures, high mobility, and topological protection, offer great promise for broadband PDs. This study reviews the latest advancements in broadband PDs utilizing heterostructures that combine 2D semimetals with ...
Xue Li   +9 more
wiley   +1 more source

Geometry of the Comptonization Region of MAXI J1348−630 through Type-C Quasiperiodic Oscillations with NICER

open access: yesThe Astrophysical Journal
We use the rms and lag spectra of the type-C quasiperiodic oscillation (QPO) to study the properties of the Comptonization region (aka corona) during the low/hard and hard-intermediate states of the main outburst and reflare of MAXI J1348−630.
Kevin Alabarta   +7 more
doaj   +1 more source

Challenges and Opportunities for Rechargeable Aqueous Sn Metal Batteries

open access: yesAdvanced Materials, EarlyView.
Rechargeable aqueous batteries with metal anodes promise enhanced energy density, combining higher output voltage and capacity with high safety. This perspective highlights the emerging potential of the Sn metal anode, emphasizing its resistance to hydrogen evolution, high reversibility, and sustainability.
Haozhe Zhang   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy