Results 91 to 100 of about 1,782 (160)

Radio Sounding Determination of Two‐Dimensional Plasma Structure Velocity

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract The Mars spacecraft Tianwen‐1 transmitted radio signals to Earth for its orbit determination. The frequencies of the radio signals exhibited sharp variations when an ICME passed through the Mars‐Earth signal path on 18 June 2021. These sharp variations were observed at different ground stations at different times. This was most probably caused
Qingbao He, Qinghui Liu, Yongzhang Yang
wiley   +1 more source

Cross‐Scale Energy Transfer at Dipolarization Front in the Earth's Magnetotail

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Dipolarization front (DF) is a key structure for energy conversion and transport in planetary magnetotails. Although multiscale processes have been observed around DFs, quantitative analyses of cross‐scale coupling remain lacking. Here, we calculate cross‐scale transfer rate for different energy channels at a DF using Magnetospheric Multiscale
Xiujuan Ou, Zhihong Zhong, Meng Zhou, Yongyuan Yi, Binwen Ge, Runqing Jin, Qianyun Xu, Ye Pang, Xiaohua Deng   +8 more
wiley   +1 more source

Stellar age-dating for different Gaia simulated catalogs

, 2012
International audienceThe determination of stellar ages is essential in many fields of astrophysics. For instance, it is used to understand the formation and evolution of the Galaxy.
Guédé, C., Lebreton, Y., Babusiaux, C., Haywood, M.   +3 more
core   +2 more sources

Seasonal and Diurnal Variability of Thermospheric Metastable Helium Observed by Multi‐Platform Observations and Numerical Modeling

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Metastable helium (He∗ ${\text{He}}^{\ast }$) in the thermosphere emits at 1,083 nm and provides a powerful diagnostic of thermospheric composition, solar radiation, and transport. Its detection remains challenging because of its extremely low density and high‐altitude.
Zhenwei Liu, Chuan Huang, Jinru Cheng, Tangsheng Cheng, Hang Zhou, Chaomei Wu, Chen Liang, Tingdi Chen, Weilong Luo, Chong Wang, Zhaofeng Wang, Ruocan Zhao, Xianghui Xue   +12 more
wiley   +1 more source

Measuring and Mapping Urban NO2 Pollution Heterogeneity Using a Custom Pandora Spectrometer Experiment and Observations From TEMPO

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.
Abstract Nitrogen dioxide (NO2) is a primary pollutant present at high concentrations in urban areas. Ground based measurements remain sparse and satellite observations rely on retrievals, so understanding intraurban, diurnal‐scale changes in NO2 is challenging.
R. H. Mooers, J. A. Geddes, C. Naughton, A. Pandey, B. K. Place, G. González Abad, N. Lombel   +6 more
wiley   +1 more source

The Evolution of Parallel Electric Field Across the Earth's Magnetosheath

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract In Earth's collisionless magnetosheath, turbulence evolution and energy transformation across the system, especially at kinetic scales, remain poorly quantified without full‐coverage of high‐resolution observations. Using multi‐traversal observations from the 2023 and 2024 Magnetospheric Multiscale (MMS) Unbiased Magnetosheath Campaign, we ...
Y. Qi, R. E. Ergun, T. Vo, A. Chasapis, S. J. Schwartz, V. Wilder   +5 more
wiley   +1 more source

Image denoising in fluorescence microscopy using feature based gradient reconstruction. [PDF]

J Med Imaging (Bellingham), 2023
Maji SK, Yahia H.
europepmc   +1 more source

Mass-independent oxygen isotope fractionation driven by energetic-particle irradiation of icy solids. [PDF]

Proc Natl Acad Sci U S A
Dominguez G, Caplan C, Tafla L, Lucas J, Liu MC, McKeegan K, Gillis J.   +6 more
europepmc   +1 more source

Robust Lifetime Estimation from HPGe Radiation-Sensor Time Series Using Pairwise Ratios and MFV Statistics. [PDF]

Sensors (Basel)
Golovko VV.
europepmc   +1 more source

Cryogenic Characterisation of a Commercial Low-Noise Amplifier (LNA) for MKID Readout Systems. [PDF]

Sensors (Basel)
Santos-Verzilli DE, Portero-Rodríguez D, García-Vázquez H, Rodríguez Ramos JM, Rodríguez Ramos LF.   +4 more
europepmc   +1 more source