Results 41 to 50 of about 80,695 (265)

Archaeoastronomy in ancient Helvetia: the theater, the temple and the city of Aventicum (Avenches) [PDF]

open access: yesArchaeoastronomy and Ancient Technologies, 2019
This article presents our discovery of the astronomical orientation of the city of Aventicum, the capital of ancient Roman Helvetia, where the sacred complex formed by the Temple of the Cigognier and the Theater were oriented along the axis that links ...
De Franceschini, M., Veneziano, G.
doaj   +1 more source

Using head-tail galaxies to constrain the intracluster magnetic field: an in-depth study of PKS J0334-3900 [PDF]

open access: yes, 2013
We present a multi-wavelength study of the radio galaxy PKS J0334-3900 at the centre of Abell 3135. The spectro-polarimetric radio observations are combined with spectroscopic optical and X-ray data to illustrate the use of Head-Tail radio galaxies to ...
Dehghan, Siamak   +3 more
core   +1 more source

Astronomical Polarimetry with the RIT Polarization Imaging Camera

open access: yes, 2018
In the last decade, imaging polarimeters based on micropolarizer arrays have been developed for use in terrestrial remote sensing and metrology applications.
Brock, Neal   +2 more
core   +1 more source

The Sun, the Moon, and the Orientation of Baltic Graves: A Mythological Approach to an Archaeological Problem
Solnce, luna i orientacija baltskih pogrebenij: mifologičeskij vzljad na arheologičeskuju problemu

open access: yesStudia Mythologica Slavica, 2018
This paper focuses on the predominating east-west orientation of Iron Age graves (5th century BC to the 13th century AD) and the reasons that could have caused the custom.
Daiva Vaitkevičienė   +1 more
doaj   +1 more source

Astronomy and mystic simbols in the Romanesque parish church of Santa Maria in Cortemilia (Cuneo, Italy) [PDF]

open access: yesArchaeoastronomy and Ancient Technologies, 2016
Cortemilia, a town in Piedmont (Italy), is located in an area that in ancient times belonged to Ligurian tribes then conquered by the Romans. At the edge of the town is the Romanesque church of Santa Maria (Sancta Maria de Plebe) of the twelfth or ...
Veneziano, G.
doaj   +1 more source

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

open access: yesAdvanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar   +8 more
wiley   +1 more source

Evaluation of selected short-term predictions of UT1-UTC and LOD collected in the second earth orientation parameters prediction comparison campaign

open access: yesEarth, Planets and Space, 2022
Advanced geodetic and astronomical tasks, such as precise positioning and navigation require forecasted Earth Orientation Parameters (EOP). The Second Earth Orientation Parameters Prediction Comparison Campaign (2nd EOP PCC) aims to compare various EOP ...
Tomasz Kur   +5 more
doaj   +1 more source

A Variable Sampling-Time Method for Elliptical Orbit Motion Prediction in Nanosatellites

open access: yesIEEE Access, 2021
Nanosatellite missions may contain payloads for high pointing accuracy such as laser communication systems for crosslinks or astronomical observations. Therefore, the satellite requires a precise orbital position and orientation determination in order to
Berenice Rodriguez-Pedroza   +2 more
doaj   +1 more source

Non Thermal‐Driven Photocatalytic Ammonia Decomposition at Near‐Room Temperature on a Plasmonic Nanocone Array

open access: yesAdvanced Functional Materials, EarlyView.
Plasmonic photocatalytic ammonia decomposition occurs at near‐room temperature on a plasmonic Au nanocone array under visible light illumination. The nanostructure efficiently harnesses plasmonic modes, leading to increased reaction rates upon plasmon decay.
Thanh‐Lam Bui   +17 more
wiley   +1 more source

The Orientation of Ancient Monuments in Sweden - A Critique of Archaeoastronorny and an Alternative Interpretation

open access: yesCurrent Swedish Archaeology, 1997
The results of three archaeoastronomical studies of Scandinavian ancient monuments are discussed and dismissed as unconvincing. The necessity of a broader approach to the problem of orientation is emphasised.
Jonathan Lindström
doaj   +1 more source

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