Results 121 to 130 of about 962,797 (273)

Automatic Crater Classification Using a Deep‐Learning‐Based Pipeline

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Identifying and classifying impact craters on Mars is crucial for understanding the planet's geological history and surface evolution. Traditional crater classification relies on manual annotation methods, which are often limited by human biases and the difficulty of interpreting geomorphological features.
L. Martinez, F. Andrieu, F. Schmidt, M. S. Bentley   +3 more
wiley   +1 more source

The Gravity Collective: A Comprehensive Analysis of the Electromagnetic Search for the Binary Neutron Star Merger GW190425

The Astrophysical Journal
We present an ultraviolet to infrared search for the electromagnetic (EM) counterpart to GW190425, the second ever binary neutron star merger discovered by the LIGO-Virgo-KAGRA Collaboration.
D. A. Coulter, C. D. Kilpatrick, D. O. Jones, R. J. Foley, J. Anais Vilchez, I. Arcavi, K. E. Clever, G. Dimitriadis, A. V. Filippenko, N. Muñoz-Elgueta, A. L. Piro, P. J. Quiñonez, G. S. Rahman, C. Rojas-Bravo, M. R. Siebert, H. E. Stacey, J. J. Swift, W. Zheng, J. S. Bloom, M. J. Bustamante-Rosell, K. W. Davis, J. Kutcka, P. Macias, P. McGill, E. Ramirez-Ruiz, K. Siellez, S. Tinyanont, S. B. Cenko, M. R. Drout, R. Hausen, D. Andrew Howell, W. V. Jacobson-Galán, D. Kasen, C. McCully, A. Rest, K. Taggart, S. Valenti   +36 more
doaj   +1 more source

Neural Surrogate HMC: On Using Neural Likelihoods for Hamiltonian Monte Carlo in Simulation‐Based Inference

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Bayesian inference methods such as Markov Chain Monte Carlo (MCMC) typically require repeated computations of the likelihood function, but in some scenarios, this is infeasible and alternative methods are needed. Simulation‐based inference methods address this problem by using machine learning to amortize computations.
L. M. Wolniewicz, P. Sadowski, C. Corti
wiley   +1 more source

A Data-driven Search For Mid-infrared Excesses Among Five Million Main-sequence FGK Stars

The Astronomical Journal
Stellar infrared excesses can indicate various phenomena of interest, from protoplanetary disks to debris disks, or (more speculatively) techno-signatures along the lines of Dyson spheres.
Gabriella Contardo, David W. Hogg
doaj   +1 more source

Methodology for assessing the suitability of immature stages of Lepidoptera for nocturnal surveying using ultraviolet flashlights

Ecological Entomology, Volume 51, Issue 5, Page 845-852, October 2026.
Lepidoptera are highly sensitive to changes in their surroundings, making them excellent indicators of ecosystem health; however, surveying adult butterflies of certain species presents challenges. Nocturnal surveying of larvae and pupae using ultraviolet light (UV) is gaining popularity as a simple, inexpensive, and non‐invasive method.
Gareth J. Tilley, Azhanullah Khan, Daniel Treuherz, David Moskowitz, Toni Kasiske, Yann Baillet, Grégory Guicherd, Bastien Louboutin, Evgeny A. Chekhovich, Alan J. A. Stewart   +9 more
wiley   +1 more source

Variability of Saturn's Equatorial Zonal Winds at Cloud Level Between 2018 and 2025

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Saturn's zonal wind profile at cloud level has been measured at different epochs since the Voyager 1 and 2 in 1980–81. At most latitudes, zonal winds change little over time. However, the equatorial region, between planetographic latitudes 10°N and 10°S, presents a complex vertical structure and significant variability.
Aida Flix‐Bellmunt, Agustín Sánchez‐Lavega, Enrique García‐Melendo, Ricardo Hueso, Amy A. Simon, Mike H. Wong, Arnau Miró, Trevor Barry   +7 more
wiley   +1 more source

TDLight: A Framework for Incremental Light-curve Management and Continuous Classification Optimization

The Astrophysical Journal Supplement Series
Time-series observations of celestial objects are fundamental to studying variable and transient phenomena. As time-domain surveys continue to scale up, timely automated classification is essential for rapid follow-up.
Xinghang Yu, Ce Yu, Zeguang Shao, Chen Wang, Bin Yang   +4 more
doaj   +1 more source

Impacts of Mid‐Latitude Ionospheric Dynamics on RF Applications During the November 2025 Superstorm Event

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract This study demonstrates the intriguing and complex interplay among auroral precipitation, enhanced TEC, density irregularities, and amplitude scintillations observed during the November 2025 superstorm. For the first time, we present observations of strong amplitude scintillation across continental United States (CONUS)—nearly from coast to ...
E. Yizengaw, W. Younas, Y. Nishimura, C. Gabrielse, T. Beach, A. J. Coster, R. Pradipta, K. M. Groves   +7 more
wiley   +1 more source

The 1948 solar eclipse and the genesis of radio astronomy in Victoria [PDF]

, 2004
In the early years of radio astronomy, solar eclipses played a critical role in establishing the sources of solar radio emission. During the half decade from 1945, Australia emerged as a leading nation in radio astronomy, with most of the observations ...
Orchiston, Wayne
core   +1 more source

The Past and Present State of Astronomy Education in Thailand

, 1990
About 300 years ago in Lopburi and Ayudhaya, many astronomical observatories were designed, constructed, and supported by the Roman Catholic missionaries from Europe and by King Narai the Great of Siam (Thailand). The interesting recorded history of Thai
Vanichai, Yupa
core