Results 51 to 60 of about 9,046 (214)
Ryugu reference project: Recommendations from the measurement definition team
Meteoritics &Planetary Science, Volume 61, Issue 5, Page 819-848, May 2026.Abstract Sample return missions play a significant role in planetary science by providing pristine extraterrestrial materials. JAXA's Hayabusa2 and NASA's OSIRIS‐REx missions have returned samples from the C‐type asteroids Ryugu and Bennu, respectively. The chemical and mineralogical compositions of these samples closely resemble those of CI chondrites,
Tetsuya Yokoyama +16 more
wiley +1 more source
Undersea marine life from the Photosphere, 1914
, 1914 Photograph, undersea marine life, taken by Gregory from Photosphere in 1914.https://digitalcommons.chapman.edu/jonathan_silent_film/2165/thumbnail ...
core +1 more source
A High-resolution, Inversion-based Synoptic Study of Solar Granulation
The Astrophysical JournalThe convectively driven, weakly magnetized regions of the solar photosphere dominate the Sun’s surface at any given time, but the temporal variations of these quiet regions of the photosphere throughout the solar cycle are still not well known.
James W. Crowley +3 more
doaj +1 more source
Spectral Irradiance Observations and Projections for Solar Cycle 25
Earth and Space Science, Volume 13, Issue 4, April 2026.Abstract The Ozone Monitoring Instrument (OMI) on the Aura satellite makes near‐daily measurements of solar spectral irradiance (SSI) at wavelengths between 265 and 500 nm for instrument calibration purposes. The low degradation and exceptional stability of OMI's calibration during its lifetime facilitates the creation of a new 18‐year OMI Version 7 ...
Matthew T. DeLand +3 more
wiley +1 more source
, 2021 We examine the expected spectra of black hole accretion flows, which are assumed to be steady and spherically symmetric, considering the separation of the apparent photosphere and thermalization surface under electron scattering. Although the flow itself
FUKUE, Jun, MASUDA, Takao
core +1 more source
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 2, April 2026.Abstract We present a novel data analysis technique based on physics‐informed neural networks (PINNs) to reconstruct two‐dimensional (2D) magnetohydrodynamic (MHD) and Hall MHD equilibria in a space plasma from in situ spacecraft measurements. Our method incorporates the steady‐state MHD or Hall MHD equations—a set of partial differential equations ...
Hiroshi Hasegawa +3 more
wiley +1 more source
Underwater view from the Photosphere, Bahamas, 1914
, 1914 Underwater garden in the Bahamas as seen from the Williamson Photosphere, 1914.https://digitalcommons.chapman.edu/jonathan_silent_film/2186/thumbnail ...
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Quasi-thermal Photosphere Emission from Structured Jets of Gamma-Ray Bursts
The Astrophysical JournalThe prompt emission of gamma-ray bursts (GRBs) is supposed to be released from the relativistic jet launched from the central engine. Apart from the nonthermal nature of spectra in the majority of GRBs, there is evidence for the presence of quasi-thermal
Ding-Fang Hu +4 more
doaj +1 more source
Reconstructing Historical Solar Indices for Predicting Past Space Weather Events
Space Weather, Volume 24, Issue 4, April 2026.Abstract Modeling and forecasting the near‐Earth space environment, specifically the thermosphere, is particularly important because it affects the motion of low‐Earth orbit objects through atmospheric drag. Solar indices such as F10.7, S10.7, M10.7, and Y10.7 are commonly used as inputs to ionospheric and thermospheric density models.
Poshan Belbase +4 more
wiley +1 more source
Williamson sketch showing Photosphere in operation
, 1914 Drawing illustrating the operation of the Williamson Photosphere filming on the ocean floor.https://digitalcommons.chapman.edu/jonathan_silent_film/2225/thumbnail ...
core +1 more source