Results 61 to 70 of about 260,301 (310)

Current Status and New Challenges of The Tunka Radio Extension [PDF]

open access: yes, 2019
The Tunka Radio Extension (Tunka-Rex) is an antenna array spread over an area of about 1~km$^2$. The array is placed at the Tunka Advanced Instrument for cosmic rays and Gamma Astronomy (TAIGA) and detects the radio emission of air showers in the band of
Bezyazeekov, P. A.   +24 more
core   +3 more sources

Artificial Intelligence‐Assisted Workflow for Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling

open access: yesAdvanced Materials, EarlyView.
AI‐Assisted Workflow for (Scanning) Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling. Abstract (Scanning) transmission electron microscopy ((S)TEM) has significantly advanced materials science but faces challenges in correlating precise atomic structure information with the functional properties of ...
Marc Botifoll   +19 more
wiley   +1 more source

Cross-sectional study of students’ knowledge of sizes and distances of astronomical objects

open access: yesPhysical Review Physics Education Research, 2018
This paper reports on the results from administering a modified version of the Introductory Astronomy Questionnaire (IAQ) to middle school students and preservice science teachers in Norway.
Vinesh M. Rajpaul   +4 more
doaj   +1 more source

Resonant Interlayer Coupling in NbSe2‐Graphite Epitaxial Moiré Superlattices

open access: yesAdvanced Materials, EarlyView.
Combining angle‐resolved photoemission spectroscopy and density functional theory derived calculations, this work reveals strong interlayer coupling and moiré replicas of the graphite π states in molecular‐beam epitaxy grown van der Waals heterostructures of monolayer‐NbSe2/graphite, with implications for its collective phases that form. Abstract Moiré
Shu Mo   +11 more
wiley   +1 more source

New audiences for old books: Using astronomy archives in school outreach activities

open access: yesEPJ Web of Conferences, 2018
The Royal Astronomical Society promotes the study of astronomy and geophysics and has recently committed to increasing public engagement with new audiences. The librarian, Sian Prosser has worked with the outreach, education and diversity officer, Sheila
Prosser Siân, Kanani Sheila
doaj   +1 more source

Characteristics of extensive air showers around the energy threshold for ground-particle-based $$\gamma $$ γ -ray observatories

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
Very-high-energy $$\gamma $$ γ -ray astronomy based on the measurement of air shower particles at ground-level has only recently been established as a viable approach, complementing the well established air Cherenkov technique.
Harm Schoorlemmer   +2 more
doaj   +1 more source

Light Curves and Roche Configurations of Near-Contact Binary AX Draconis [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2003
We completed the light curves of near-contact binary system AX Dra for 11 nights from March 2001 to May using the 61-cm reflector and VR filters at Sobaeksan Optical Astronomy Observatory.
Ho-Il Kim   +4 more
doaj   +1 more source

Absolute calibration and beam reconstruction of MITO (a ground-based instrument in the millimetric region)

open access: yes, 2003
An efficient sky data reconstruction derives from a precise characterization of the observing instrument. Here we describe the reconstruction of performances of a single-pixel 4-band photometer installed at MITO (Millimeter and Infrared Testagrigia ...
A Orlando   +16 more
core   +1 more source

Asymmetry of the Ferroelectric Phase Transition in BaTiO3

open access: yesAdvanced Materials, EarlyView.
Phase transitions are typically assumed to behave identically in forward and reverse. This work shows that in the ferroelectric material barium titanate this is not true: heating drives an abrupt, first‐order jump, while cooling gives a smooth, continuous change.
Asaf Hershkovitz   +14 more
wiley   +1 more source

Geometry and optics calibration of WFCTA prototype telescopes using star light

open access: yes, 2010
The Large High Altitude Air Shower Observatory project is proposed to study high energy gamma ray astronomy ( 40 GeV-1 PeV ) and cosmic ray physics ( 20 TeV-1 EeV ).
Bin Zhou   +22 more
core   +1 more source

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