Results 171 to 180 of about 1,014 (294)
Five New Heartbeat Star Systems with Tidally Excited Oscillations Discovered Based on TESS Data
The Astrophysical JournalHeartbeat stars (HBSs) with tidally excited oscillations (TEOs) are ideal astrophysical laboratories for studying the internal properties of the systems. In this paper, five new HBSs exhibiting TEOs are discovered using TESS photometric data. The orbital
Min-Yu Li +8 more
doaj +1 more source
Spatially Modulated Morphotropic Phase Boundaries in a Compressively Strained Multiferroic Thin Film
Advanced Functional Materials, EarlyView.ABSTRACT The coexisting rhombohedral‐like (R′, MA) and tetragonal‐like (T′, MC) monoclinic phases in compressively strained bismuth ferrite thin films exhibit exceptional piezoelectric and magnetic properties. While previous studies have largely focused on probing the morphotropic phase boundaries (MPBs) comprising ordered R′/T′ twins, their self ...
Ting‐Ran Liu +7 more
wiley +1 more source
BE Lyncis: A Pulsating Star in the Most Eccentric Binary with a Massive Unseen Companion
The Astrophysical Journal LettersWe report the discovery of an exceptionally eccentric binary system, BE Lyncis (BE Lyn), which might host a compact companion with mass ≳2.5 M _⊙ . By combining TESS photometry with an extensive set of times of maximum light spanning 39 yr, we identify ...
Jia-Shu Niu, Ying Zhang, Hui-Fang Xue
doaj +1 more source
No evidence for tidal tails from short period pulsating stars on the outskirts of Omega Centauri
, 2016 International audienceWe explored multi-epoch observations along different fields (50 sq. deg.) surrounding the Centauri stellar system, looking for short-period variable stars.
Verdugo, T. +4 more
core
Advanced Functional Materials, EarlyView.Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand +13 more
wiley +1 more source
Discovery of a radio emitting neutron star with an ultra-long spin period of 76 seconds. [PDF]
Nat Astron, 2022 Caleb M +21 more
europepmc +1 more source
Searching for new variable stars
A method of finding new variable stars is presented in this work. The method is based on observations from ground-based telescopes processed using the SIPS and SILICUPS pro- grams, with data from the TESS satellite used to confirm the variability.
Odorčák, Marek
core
Advanced Functional Materials, EarlyView.This study demonstrates that memristors can replace conventional 2T–1C driving circuits with simplified 1T–1 m architectures by exploiting resistance switching. With ultra‐low switching voltages (< ±0.2 V) and multi‐level resistance states, the memristors precisely control the current injected into organic light‐emitting diodes (OLEDs).
Dong Hyun Kim +6 more
wiley +1 more source
Polymer Interface Enables Reversible Quasi‐Solid Sulfur Conversion in Sodium‐Sulfur Batteries
Advanced Functional Materials, EarlyView.The polymer interface enables a stable quasi‐solid sulfur conversion pathway in room‐temperature Na─S batteries. The coating regulates Na+ transport, stabilizes the cathode–electrolyte interphase, and accommodates mechanical stress, suppressing electrolyte decomposition and sulfur migration, thereby improving reaction uniformity, reducing polarization,
Reza Andaveh +12 more
wiley +1 more source
Unsupervised classification of eclipsing binary light curves through k-medoids clustering. [PDF]
J Appl Stat, 2020 Modak S +2 more
europepmc +1 more source