Results 181 to 190 of about 67,587 (268)

First‐Principle Analysis of the Structural, Elastic, Electronic, and Optical Properties of Novel AHgF3 (A = K and Fr) Perovskite

open access: yesNano Select, Volume 7, Issue 8, August 2026.
The evaluation of the physical properties of novel KHgF3 and FrHgF3 perovskites is explored. Both compounds are thermodynamically stable and mechanically ductile. Featuring narrow band gaps around 0.53–0.60 eV, these materials show strong potential for use in flexible infrared‐to‐visible optoelectronics and energy conversion devices.
Md. Imtiaz Hossain Chowdhury   +6 more
wiley   +1 more source

Perturbative Analytical Construction of Bowen–York Initial Data for Binary Black Holes up to Third Order in Spin and Linear Momentum

open access: yesFortschritte der Physik, Volume 74, Issue 8, August 2026.
ABSTRACT We analytically construct initial data for binary black hole systems by solving the Einstein constraint equations within the Bowen–York framework. Allowing for arbitrarily oriented linear momenta and spins, we obtain a perturbative solution of the vacuum Hamiltonian constraint up to third order in the source parameters. Our solution explicitly
Leyla Ogurol, Tore Boybeyi, Bayram Tekin
wiley   +1 more source

Uncovering the rapidly evolving orbits of the dynamic TOI-201 system. [PDF]

open access: yesSci Adv
Mireles I   +49 more
europepmc   +1 more source

Boundary‐Only Weak Deflection by Regular Black Holes, Black‐Bounces, Wormholes, and Static Quadrupolar Spacetimes

open access: yesFortschritte der Physik, Volume 74, Issue 8, August 2026.
ABSTRACT We apply the boundary‐only isothermal formulation of finite‐distance weak gravitational deflection to regular black holes, black‐bounces, traversable wormholes, non‐asymptotically flat backgrounds, and static quadrupolar spacetimes. The methodological advance is not a new value for a known bending angle.
Reggie C. Pantig, Ali Övgün
wiley   +1 more source

Energy calibration of the 2.5 MV Pelletron at the Dalton Cumbrian Facility. [PDF]

open access: yesEur Phys J A Hadron Nucl
Linkowski K   +11 more
europepmc   +1 more source

Remote Sensing During the 2025 Los Angeles Wildfires

open access: yesAGU Advances, Volume 7, Issue 5, August 2026.
Abstract The January 2025 Los Angeles County wildfires burned more than 50,000 acres, destroyed more than 16,000 structures, and caused 31 deaths. This Commentary examines how NASA's Disasters Program coordinated with response organizations to deliver 22 satellite and airborne products during the fires, even as the Eaton Fire forced the Jet Propulsion ...
Julie Rolla   +5 more
wiley   +1 more source

The faintest, extremely variable X-ray tidal disruption event from a supermassive black hole binary? [PDF]

open access: yesInnovation (Camb)
Huang M   +32 more
europepmc   +1 more source

Recent History of Surface Ocean Acidification Extremes That Compound Marine Heatwaves

open access: yesAGU Advances, Volume 7, Issue 5, August 2026.
Abstract Compound extremes are of concern for ocean health, such as when ocean acidification extremes (OAX) and marine heatwaves (MHW) co‐occur. These compound events (OAX∩ $\,\cap \,$MHW) may amplify stress beyond the impact of each driver alone, yet their historical distribution remains poorly quantified.
Luke Gregor, Nicolas Gruber
wiley   +1 more source

A young progenitor for the most common planetary systems in the Galaxy. [PDF]

open access: yesNature
Livingston JH   +41 more
europepmc   +1 more source

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