Results 31 to 40 of about 151,031 (208)
Quantitative predictions with detuned normal forms [PDF]
Celestial Mechanics & Dynamical Astronomy (2008), vol. 102, pp.
163--176, 2008 The phase-space structure of two families of galactic potentials is approximated with a resonant detuned normal form. The normal form series is obtained by a Lie transform of the series expansion around the minimum of the original Hamiltonian. Attention is focused on the quantitative predictive ability of the normal form. We find analytical expressions
arxiv +1 more source
Chiral Pseudogap Metal Emerging from a Disordered Van der Waals Mott Insulator 1T‐TaS2 − xSex
Advanced Materials, EarlyView.An intriguing metal was discovered in a chiral charge density wave material, 1T‐TaS2. The random substitution of S by Se induces a transition from an insulator to a metal with a strongly suppressed electron density at the Fermi energy. The pseudogap comes from electronic disorder on with substantial electron correlation and exhibits unprecedented ...
Hyunjin Jung +7 more
wiley +1 more source
Earth and Space Science, Volume 9, Issue 12, December 2022., 2022 Abstract The boundary between the Northern Andean block and the South American plate is a first‐order tectonic structure in Colombia with historically M > 7 earthquakes. However, details about individual sections of the system remain unknown. We illuminate the seismotectonic of the Algeciras fault by investigating an earthquake sequence that started on
Esteban Poveda +6 more
wiley +1 more source
Organic Ferroelectric Synaptic Transistors for Neural Image Recognition Networks
Advanced Materials Interfaces, EarlyView.All organic transistors, where both the dielectric and semiconducting layers are polymeric, are developed as electrical synaptic devices. Two copolymers of PVDF as the dielectric layer with large differences in their saturation polarizability and memory window are chosen.
Evan Restuccia +2 more
wiley +1 more source
Earth and Space Science, Volume 9, Issue 12, December 2022., 2022 Abstract The Mastcam‐Z radiometric calibration targets mounted on the NASA's Perseverance rover proved to be effective in the calibration of Mastcam‐Z images to reflectance (I/F) over the first 350 sols on Mars. Mastcam‐Z imaged the calibration targets regularly to perform reflectance calibration on multispectral image sets of targets on the Martian ...
M. Merusi +19 more
wiley +1 more source
Quasi-Normal Modes of Stars and Black Holes
Living Reviews in Relativity, 1999 Perturbations of stars and black holes have been one of the main topics of relativistic astrophysics for the last few decades. They are of particular importance today, because of their relevance to gravitational wave astronomy.
Kokkotas Kostas, Schmidt Bernd
doaj
Perturbative reconstruction of a gravitational lens: when mass does not follow light [PDF]
, 2009 The structure and potential of a complex gravitational lens is reconstructed using the perturbative method presented in Alard 2007, MNRAS, 382L, 58; Alard 2008, MNRAS, 388, 375. This lens is composed of 6 galaxies belonging to a small group. The lens inversion is reduced to the problem of reconstructing non-degenerate quantities: the 2 fields of the ...
arxiv +1 more source
Effect of Core Geometry on Frequency Correlations and Channel Capacity of a Multimode Optical Fiber
Advanced Photonics Research, EarlyView.Structured wavefronts focused at the output of multimode fibers reveal a distinct spatial dependence of frequency correlation bandwidth between circular and rectangular cores. Unlike conventional circular‐core fibers, rectangular‐core fibers maintain uniform bandwidth across all transverse locations, enabling over a 20% increase in channel capacity for
Henry C. Hammer, Ravitej Uppu
wiley +1 more source
Earth's Future, Volume 10, Issue 12, December 2022., 2022 Abstract Anthropogenic greenhouse gas emissions are causing unprecedented changes to the climate. In 2015, at the United Nations (UN) Conference of the Parties in Paris, France, countries agreed to limit the global mean temperature (GMT) increase to 2°C above preindustrial levels, and to pursue efforts to limit warming to 1.5°C.
S. Sadai +3 more
wiley +1 more source
Elevated Rates of Tidal Disruption Events in Active Galactic Nuclei
The Astrophysical JournalAdvances in time domain astronomy have produced a growing population of flares from galactic nuclei, including both tidal disruption events (TDEs) and flares in active galactic nuclei (AGN).
Karamveer Kaur, Nicholas C. Stone
doaj +1 more source