Results 31 to 40 of about 9,521 (349)
Advanced Functional Materials, EarlyView.A giant magnetic coercivity and a vertical shift of hysteresis loops are demonstrated in Sr3YCo4O10+δ epitaxial films. The hard magnetic behavior originates from ferromagnetic spin bags stabilized within a long‐range ordered oxygen‐vacancy structure.
Yanbin Chen +12 more
wiley +1 more source
Very high energy gamma ray astronomy and non pulsating low mass x-ray binaries [PDF]
, 1991 This thesis is concerned with non pulsating Low Mass X-Ray Binaries as Very High Energy γ-ray sources, in particular Scorpius X-1; the brightest of these objects in X-rays, and the most likely to be detectable at energies above 250 GeV.
Carraminana, Alberto, Carraminana, A
core
The Ongoing Decline in Activity of Comet 103P/Hartley 2
The Planetary Science JournalWe 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
Mars contre Neptune : l’astronomie entre rêve et calcul
Cahiers 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
Effect of Optical Illumination on Bubble Nanodomains
Advanced Functional Materials, EarlyView.Stable surface‐confined nanoscale bubble domains are created and manipulated in PMN‐PT single crystals. Under above‐bandgap illumination, these bubble nanodomains remain unchanged. However, upon illumination cessation, they rapidly expand to switch the entire crystal surface, due to the accumulation of a large reservoir of electrons at the crystal ...
Haoze Zhang +8 more
wiley +1 more source
A Study of Babylonian Goal-Year Planetary Astronomy [PDF]
, 2009 Throughout the Late Babylonian Period, Mesopotamian astronomers made nightly observations of the planets, Moon and stars. Based on these observations, they developed several different techniques for predicting future astronomical events.
GRAY, JENNIFER,MARY,KNIGHTLEY +1 more
core
Extragalactic radio continuum surveys and the transformation of radio astronomy [PDF]
, 2017 Next-generation radio surveys are about to transform radio astronomy by discovering and studying tens of millions of previously unknown radio sources. These surveys will provide fresh insights for understanding the evolution of galaxies, measuring the ...
Ray P. Norris, Norris, Ray P. (R17893)
core +1 more source
SITCoM: SiRGraF Integrated Tool for Coronal dynaMics
Frontiers in Astronomy and Space Sciences, 2023 SiRGraF Integrated Tool for Coronal dynaMics (SITCoM) is based on the Simple Radial Gradient Filter used to filter the radial gradient in the white-light coronagraph images and bring out dynamic structures.
Purvi Udhwani +5 more
doaj +1 more source
Advanced Functional Materials, EarlyView.ABSTRACT Next‐generation implantable neural‐interfacing devices are increasingly constrained by the coupled demands of electrode miniaturization, electrochemical performance, and implantation infection risk. Femtosecond laser–based hierarchical surface restructuring (HSR) technology has emerged as a scalable, manufacturing‐compatible platform for ...
Henna Khosla +12 more
wiley +1 more source
Transit timing at Torun Center for Astronomy [PDF]
, 2011 The transit monitoring is one of well-known methods for discovering and observing new extrasolar planets. Among various advantages, this way of searching other worlds does not require complex and expensive equipment - it can be performed with a ...
Maciejewski, G., Bykowski, W.
core