Results 71 to 80 of about 28,168 (221)

The Striated Solar Photosphere Observed at Resolution

The Astrophysical Journal Letters
Striated granular edges observed in the solar photosphere represent one of the smallest-scale phenomena on the Sun. They arise from the interaction of strongly coupled hydrodynamic, magnetic, and radiative properties of the plasma.
David Kuridze, Friedrich Wöger, Han Uitenbroek, Matthias Rempel, Alexandra Tritschler, Thomas Rimmele, Catherine Fischer, Oskar Steiner   +7 more
doaj   +1 more source

The height dependence of temperature - velocity correlation in the solar photosphere

, 2007
We derive correlation coefficients between temperature and line-of-sight velocity as a function of optical depth throughout the solar photosphere for the non-magnetic photosphere and a small area of enhanced magnetic activity. The maximum anticorrelation
Koza, J., Kucera, A., Rybák, J., Wöhl, H.   +3 more
core  

Dust in the Photospheric Environment: Unified Cloudy Models of M, L, and T Dwarfs [PDF]

, 2002
We address the problem of how dust forms and how it could be sustained in the static photospheres of cool dwarfs for a long time. In the cool and dense gas, dust forms easily at the condensation temperature, T_cond, and the dust can be in detailed ...
Biemont E., Blackwell D. E., Borysow A., Brett J. M., Brett J. M., Brown L. R., Brown L. R., Delfosse X., Eriksson T. S., Grevesse N., Grevesse N., Hedgecock I. M., Holweger H., Jones H. R. A., Margolis J. S., Mould J., Nakajima T., Ordal M.A., Ossenkopf V., Takashi Tsuji, Tsuji T., Tsuji T., Tsuji T., Tsuji T., Viti S.   +24 more
core   +4 more sources

Jupiter's X‐ray Aurorae. A High Signal Spectral Analysis of the 0.24–1.40 keV Energy Range

Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract Jupiter's X‐ray auroras are predominantly produced by precipitating energetic heavy ions. Recent results suggest a connection between the pulsation rate of these ion aurorae and the pulsation rate of magnetospheric waves. Using remote X‐ray observations and results from in situ measurements from the Juno Jupiter Energetic particle Detector ...
B. Parry, W.R. Dunn, A.D. Wibisono, A. Foster, J.A. Carter, N. Achilleos, G. Clark   +6 more
wiley   +1 more source

Solar Vortex Tubes. III. Vorticity and Energy Transport

The Astrophysical Journal
This study investigated the mechanisms of vorticity generation and the role of vortex tubes in plasma heating and energy transport. Vortex tubes were identified using the instantaneous vorticity deviation technique in the MURaM data set of a simulated ...
Suzana S. A. Silva, Gary Verth, Istvan Ballai, Erico L. Rempel, Sergiy Shelyag, Luiz A. C. A. Schiavo, Tiago F. P. Gomes, Viktor Fedun   +7 more
doaj   +1 more source

Nonlinear Force-Free Field Modeling of the Solar Magnetic Carpet and Comparison with SDO/HMI and Sunrise/IMaX Observations

, 2014
In the quiet solar photosphere, the mixed polarity fields form a magnetic carpet, which continuously evolves due to dynamical interaction between the convective motions and magnetic field.
Chitta, L. P., DeLuca, E. E., Kariyappa, R., Solanki, S. K., van Ballegooijen, A. A.   +4 more
core   +1 more source

CNN‐Based Model for 3D CME Parameter Prediction – A Proof of Concept

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.
Abstract Accurate 3D reconstruction of coronal mass ejections (CMEs) is essential for understanding their propagation and improving space weather forecasts. In this study, we present a proof‐of‐concept deep learning framework that predicts seven parameters from synthetic multi‐view coronagraph images.
Harshita Gandhi, Huw Morgan, Cory Thomas
wiley   +1 more source

The Relationship between Kinetic and Magnetic Helicity in Solar Active Regions

The Astrophysical Journal
Using Helioseismic and Magnetic Imager/Solar Dynamics Observatory data, we search for a relationship between kinetic helicity and magnetic helicity in solar active regions (ARs) using a sample of 62 ARs from 2010 May to 2015 May.
Yang Liu, Rudolf Komm, Nicholas H. Brummell, J. Todd Hoeksema, Bhishek Manek, Gherardo Valori   +5 more
doaj   +1 more source

Observational evidence for buffeting induced kink waves in solar magnetic elements

, 2014
The role of diffuse photospheric magnetic elements in the energy budget of the upper layers of the Sun's atmosphere has been the recent subject of many studies.
Berrilli, F., Consolini, G., De Michelis, P., Stangalini, M., Tozzi, R.   +4 more
core   +1 more source

MHD Forecasting of Solar Wind With Coronal Mass Ejections

Space Weather, Volume 23, Issue 12, December 2025.
Abstract We present a model, implemented as an online service, for predicting the speed and density of solar wind in the inner heliosphere and near Earth. The model is based on a numerical magnetohydrodynamics code PLUTO. The inner boundary maps are continuously obtained from the National Centers for Environmental Prediction, where they are updated 1 ...
S. Arutyunyan, A. Kodukov, M. Subbotin, D. Pavlov   +3 more
wiley   +1 more source