Results 91 to 100 of about 200,926 (234)

Radio astronomical images object detection and segmentation: A benchmark on deep learning methods [PDF]

open access: green, 2023
Renato Sortino   +11 more
openalex   +1 more source

High-resolution Solar Image Registration Using Unsupervised Deep Learning

open access: yesThe Astrophysical Journal
High-resolution solar images captured at different wavelengths are essential for understanding solar activity. However, such images often exhibit geometric discrepancies due to varying instrument resolutions and observation conditions, making image ...
Hao Zhang   +6 more
doaj   +1 more source

Revitalizing Astronomical Azimuth Determination: Integrating Modern Computing with Traditional Techniques

open access: yesSensors
It is not widely recognized today that astronomical methods for azimuth determination continue to rank among the most accurate techniques for establishing orientation.
Luigi Barazzetti
doaj   +1 more source

A Fast, Second-order Accurate Poisson Solver in Spherical Polar Coordinates

open access: yesThe Astrophysical Journal Supplement Series
We present an efficient and accurate algorithm for solving the Poisson equation in spherical polar coordinates with a logarithmic radial grid and open boundary conditions.
Jeonghyeon Ahn   +2 more
doaj   +1 more source

Development of Methods for the Formation of Astronomical Knowledge Among Students

open access: yesQubahan Academic Journal
The public’s interest in astronomy, combined with unresolved scientific and ideological issues and low astronomical literacy, has led to the spread of pseudo-scientific beliefs.
Torebay Turmambekov   +3 more
doaj   +1 more source

Efficient Exoplanet Imaging Simulations of the Habitable Worlds Observatory

open access: yesThe Astronomical Journal
Direct imaging simulations of starshades and other proposed mission concepts are needed to characterize planet detection performance and inform mission design trades.
Jamila S. Taaki   +4 more
doaj   +1 more source

Investigations of MWISP Filaments. I. Filament Identification and Analysis Algorithms, and Source Catalog

open access: yesThe Astrophysical Journal Supplement Series
Filaments play a crucial role in providing the necessary environmental conditions for star formation, actively participating in the process. To facilitate the identification and analysis of filaments, we introduce Directional and Positional Consistency ...
Yu Jiang   +10 more
doaj   +1 more source

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