Results 21 to 30 of about 151,031 (208)
Improved timing formula for the PSR B1257+12 planetary system [PDF]
, 2000 We present a new analysis of the dynamics of the planetary system around the pulsar B1257+12. A semi-analytical theory of perturbation between terrestrial-mass planets B and C is developed and applied to improve multi-orbit timing formula for this object.
arxiv +1 more source
Covariant gauge invariant theory of Scalar Perturbations in $f(R)$-gravity: a brief review [PDF]
, 2010 I review the state of the art of the investigation on the structure formation in $f(R)$-gravity based on the Covariant and Gauge Invariant approach to perturbations. A critical analysis of the results, in particular the presence of characteristic signature of these models, together with their meaning and their implication is given.
arxiv +1 more source
Entrapped Molecule‐Like Europium‐Oxide Clusters in Zinc Oxide with Nearly Unaffected Host Structure
Small, Volume 19, Issue 1, January 4, 2023., 2023 Eu‐oxide cluster inclusions in ZnO explain the almost retained ZnO unit‐cell dimensions observed upon doping with large, aliovalent Eu3+ ions. Abstract Nanocrystalline ZnO sponges doped with 5 mol% EuO1.5 are obtained by heating metal–salt complex based precursor pastes at 200–900 °C for 3 min.
Soham Mukherjee +7 more
wiley +1 more source
Acoustic geometry obtained through the perturbation of the Bernoulli's constant [PDF]
New Astronomy, Volume 63, pp. 65-74 (2018), 2016 For accretion onto astrophysical black holes, we demonstrate that linear perturbation of Bernoulli's constant defined for an inviscid irrotational adiabatic flow of perfect ideal fluid gives rise to phenomena of analogue gravity. The formulation of our work is done in the Newtonian framework and also within the General relativistic framework, i.e ...
arxiv +1 more source
Universal Superconductivity in FeTe and All‐Iron‐Based Ferromagnetic Superconductor Heterostructures
Advanced Functional Materials, EarlyView.The first all‐iron‐based ferromagnetic superconductor heterostructures with high‐temperature superconductivity and strong ferromagnetism aredemonstrated. From this, it is discovered that FeTe becomes universallysuperconducting with a minute level of cationic impurities through doping ordiffusion from neighboring layers, suggesting its ground state can ...
Hee Taek Yi +12 more
wiley +1 more source
Evolution of Perturbations in a Noncommutative Braneworld Inflation [PDF]
Research in Astronomy and Astrophys, 12 (2012) 625-635, 2010 Following our previous work in noncommutative braneworld inflation (arXiv:0911.4418), in this paper we use the smeared, coherent state picture of noncommutativity to study evolution of perturbations in a noncommutative braneworld scenario. We show that in this setup, the early stage of the universe evolution has a phantom evolution with imaginary ...
arxiv +1 more source
Ultrafast Laser Synthesis of Zeolites
Advanced Materials, EarlyView.The study presents a novel ultrafast laser‐driven synthesis technique for zeolites directly in liquid. Laser pulses create a microscopic reactor that controls reaction kinetics at femto‐ and picosecond timescales. Nonlinear light‐matter interactions drive nucleation and growth, allowing the process to be paused at any stage of self‐assembly.
Sezin Galioglu +11 more
wiley +1 more source
Estimating Spectral Effects of Absorbing Aerosols on Backscattered UV Radiation
Earth and Space Science, Volume 9, Issue 12, December 2022., 2022 Abstract We examine the spectral effects of tropospheric absorbing aerosol types on backscattered UV radiation from 300 to 400 nm. First, using satellite observations, we show a non‐linear spectral dependence below 340 nm for scenes with significant aerosol absorption.
Hiren Jethva +3 more
wiley +1 more source
Advanced Materials, EarlyView.Synthesis of topological semimetal TaAs2 nanowires in situ encapsulated with a thin SiO2 shell unravel a richness of intertwined topological phases manifested by their magnetotransport features: A near‐room‐temperature metal‐to‐insulator transition, strong expressions of topologically nontrivial surface transport, giant magnetoresistance with direction‐
Anand Roy +9 more
wiley +1 more source
Craton Destruction Induced by Drastic Drops in Lithospheric Mantle Viscosity
Earth and Space Science, Volume 9, Issue 12, December 2022., 2022 Abstract The disruption of the mantle roots of cratons is common after cratonization. Craton destruction, which is characterized by severe lithospheric thinning, extensive thrust and extensional deformation, basin filling, and intense thermal activities, is relatively rare and is generally attributed to intensely reduced viscosity contrasts between the
Lu Wang +3 more
wiley +1 more source