Results 161 to 170 of about 628,144 (303)

Dynamics of Purification in Cu2O

open access: yesphysica status solidi (b), EarlyView.
Rydberg excitons in Cu2O have been shown to be highly efficient in neutralizing and screening charged impurities, which is referred to as purification. In this manuscript, the dynamics of the purification process are investigated under varying probe exciton‐ and plasma density. The transient absorption of Rydberg excitons is analyzed and five different
Binodbihari Panda   +3 more
wiley   +1 more source

Dynamical Evolution of Four Old Galactic Open Clusters Traced by Their Constituent Stars with Gaia DR3

open access: yesThe Astronomical Journal
We investigate the evolutionary stages of four open clusters—Berkeley 39, Collinder 261, NGC 6819, and NGC 7789—of ages ranging from 1.6 to 6 Gyr. These clusters have previously been classified into dynamically young and intermediate age groups based on ...
Shanmugha Balan   +4 more
doaj   +1 more source

Nondestructive Analysis of Coercivity Distributions in Permanent Magnets with Locally Enhanced Magnetic Properties

open access: yesphysica status solidi (RRL) – Rapid Research Letters, EarlyView.
A nondestructive method enables quantification of local coercivity variations in permanent magnets. By combining magnetic field mapping with closed‐circuit hysteresisgraph measurements, spatial coercivity distributions Hcj(y) are reconstructed. Validation by destructive analysis confirms accuracy, enabling reliable quality assessment and supporting ...
Maximilian Lanz   +4 more
wiley   +1 more source

Stellar Spin-down in Post-mass-transfer Binary Systems

open access: yesThe Astrophysical Journal
Motivated by measurements of the rotation speed of accretor stars in post-mass-transfer (post-MT) systems, we investigate how magnetic braking affects the spin-down of individual stars during binary evolution with the MESAbinary module.
Meng Sun   +3 more
doaj   +1 more source

Cell Division Control Protein 42 Interacts With Hepatitis E Virus Capsid Protein and Participates in Hepatitis E Virus Infection. [PDF]

open access: yesFront Microbiol, 2021
Fan M   +10 more
europepmc   +1 more source

Terahertz Quantum Imaging

open access: yesAdvanced Quantum Technologies, EarlyView.
The presented quantum imaging technique allows the measurement of spatial amplitude, phase, and spectral information of terahertz radiation after interaction with a sample by only detecting visible photons with a standard, uncooled camera. It offers a promising alternative to traditional terahertz imaging methods like electro‐optical and upconversion ...
Mirco Kutas   +4 more
wiley   +1 more source

Dynamical Signatures of Trumpler 19: A Statistical and Photometric Perspective

open access: yesThe Astrophysical Journal
We present a statistical approach to investigating the dynamical evolution of the old open cluster Trumpler 19. We identified 810 cluster members using an ensemble-based unsupervised machine learning method applied to Gaia Data Release 3 astrometric data.
A. H. Sheikh, Biman J. Medhi, Ram Sagar
doaj   +1 more source

Ultra–Lithium‐deficient Halo Stars and Blue Stragglers: A Common Origin? [PDF]

open access: bronze, 2001
Sean G. Ryan   +3 more
openalex   +1 more source

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