Results 31 to 40 of about 811,965 (260)

Accelerated Discovery of Topological Spin Phase Diagrams in CrSBr Magnets Via High‐Throughput Optimization

open access: yesAdvanced Functional Materials, EarlyView.
Here, we develop a high‐throughput algorithm that accelerates the elucidation of phase diagrams of topological spin textures using limited computational resources at high numerical accuracy. Applying this framework to the van der Waals magnet CrSBr, we unveiled a hierarchy of previously unknown topological textures (domain‐wall bimerons, bimeron chains,
Andrew Lyall   +4 more
wiley   +1 more source

The Ongoing Decline in Activity of Comet 103P/Hartley 2

open access: yesThe Planetary Science Journal
We report photometric observations of Comet 103P/Hartley 2 during its 2023 apparition. Our campaign, conducted from August through 2023 December, combined data from a global network of citizen astronomers coordinated by Unistellar and the Association ...
Ariel Graykowski   +104 more
doaj   +1 more source

Current‐Driven Chirality Detection of Magnetic Textures in Cylindrical Nanowires

open access: yesAdvanced Functional Materials, EarlyView.
Current‐assisted anisotropic magnetoresistance measurements in individual Ni/Au cylindrical nanowires enable detection of vortex chirality near Au segments and selective magnetic reversal in defined wire sections at magnetic fields lower than the propagation field. This approach provides a simple, cost‐effective, and non‐invasive method for probing and
Javier Rial   +6 more
wiley   +1 more source

Stability mapping of the new Uranian moon S/2025 U1 with updated masses for Cordelia, Ophelia, and Cressida

open access: yesAstronomy & Astrophysics
We investigate the dynamics of Uranus’s inner satellite system considering three recent updates: the inclusion of the new moon S/2025 U1; revised mass estimates for Cordelia, Ophelia, and Cressida; and updated zonal harmonic coefficients (J2, J4, and J6).
Xavier J.   +3 more
doaj   +1 more source

Joe Pawsey and the Founding of Australian Radio Astronomy [PDF]

open access: yes, 2023
This open access book is a biography of Joseph L. Pawsey. It examines not only his life but the birth and growth of the field of radio astronomy and the state of science itself in twentieth century Australia.
Ekers, Ronald D.   +2 more
core   +1 more source

Dirac Semimetallicity Enabled by Stripe Antiferromagnetism in Monolayer FeSe

open access: yesAdvanced Functional Materials, EarlyView.
In monolayer FeSe, stripe antiferromagnetic order selectively breaks mirror symmetry, enabling odd inter‐orbital hybridization between opposite‐parity Fe 3d states. This mechanism stabilizes symmetry‐protected Dirac nodes with nontrivial Wilson‐loop topology and edge states, accompanied by a strong orbital diamagnetic susceptibility as an experimental ...
Darius‐Alexandru Deaconu   +5 more
wiley   +1 more source

Foreground Dust Properties toward the Cluster NGC 7380

open access: yesThe Astronomical Journal
Using starlight polarization, we present the properties of foreground dust toward cluster NGC 7380 embedded in H ii region Sh 2-142. Observations of starlight polarization are carried out in four filters using an imaging polarimeter equipped with a 104 ...
Sadhana Singh   +6 more
doaj   +1 more source

Building a Radio AGN Sample from Cosmic Morning—The Radio High-Redshift Quasar Catalog (RHzQCat): I. Catalog from SDSS Quasars and Radio Surveys at z ≥ 3

open access: yesUniverse
Radio-loud high-redshift quasars (RHRQs) provide crucial insights into the evolution of relativistic jets and their connection to the growth of supermassive black holes.
Yingkang Zhang   +7 more
doaj   +1 more source

Switching Superconductivity with Uniaxial Strain in a high‐Tc${\rm T}_{c}$ Cuprate Superconductor

open access: yesAdvanced Functional Materials, EarlyView.
Uniaxial strain is demonstrated as a new scheme for a superconductivity switch. Exploiting the large strain‐induced Tc shift in a cuprate superconductor enables robust switching between superconducting and normal states over 100 cycles with only 0.1% strain.
Baizhi Gao   +3 more
wiley   +1 more source

Mars contre Neptune : l’astronomie entre rêve et calcul

open access: yesCahiers François Viète, 2015
The self-taught Camille Flammarion, fascinated from childhood by the contemplation of the starry sky, entered astronomy through the back door of the calculation office of the Paris Observatory, then directed by the authoritarian Urbain Le Verrier ...
Colette Le Lay
doaj   +1 more source

Home - About - Disclaimer - Privacy