Results 81 to 90 of about 1,066 (184)

88th Annual Meeting of the Meteoritical Society 2026: Abstracts

Meteoritics &Planetary Science, Volume 61, Issue S1, Page S48-S551, August 2026.
wiley   +1 more source

Case Studies on Pre-eruptive X-class Flares using R-value in the Lower Solar Atmosphere

The Astrophysical Journal
The R -value is a measure of the strength of photospheric magnetic polarity inversion lines in active regions (ARs). This work investigates the possibility of a relation between R -value variations and the occurrence of X-class flares in ARs, not in the ...
Shreeyesh Biswal, Marianna B. Korsós, Manolis K. Georgoulis, Alexander Nindos, Spiros Patsourakos, Robertus Erdélyi   +5 more
doaj   +1 more source

Measuring the Expansion of Solar Magnetic Fields with Multiline Inversions from Sunrise III

The Astrophysical Journal Letters
Magnetic fields in the solar atmosphere are expected to expand with height, forming magnetic canopies that couple the photosphere and chromosphere. Except for sunspots, direct measurements of this expansion remain scarce because they require simultaneous
Juan Carlos Trelles Arjona, María Jesús Martínez González, Christoph Kuckein, Sergio Javier González Manrique, Manuel Collados, Sami K. Solanki, Andreas Lagg, Achim Gandorfer, Jose Carlos del Toro Iniesta, Yukio Katsukawa, Pietro Bernasconi, Thomas Berkefeld, Alex Feller, Tino L. Riethmüller, Alberto Álvarez-Herrero, Masahito Kubo, H. N. Smitha, David Orozco Suárez, Bianca Grauf, Michael Carpenter, Alexander Bell, Valentín Martínez Pillet, Francisco Javier Bailén, Julian Blanco Rodríguez, Juan Sebastián Castellanos Durán, Edvarda Harnes, Johannes Hölken, Francisco A. Iglesias, Ryohtaroh T. Ishikawa, Yusuke Kawabata, Takuma Matsumoto, Takayoshi Oba, Azaymi L. Siu-Tapia, Hanna Strecker, Dušan Vukadinovic, Hirohisa Hara, Toshifumi Shimizu   +36 more
doaj   +1 more source

Multi-height probing of horizontal flows in the solar photosphere

Astronomy & Astrophysics
Context. Optical flow methods aim to infer horizontal (transverse, in the general case) velocities in the solar atmosphere from the temporal changes in maps of physical quantities, such as intensity or magnetic field.
Kostić T., Milić I., Rempel M., Welsch B., Kazachenko M., Asensio Ramos A., Tremblay B.   +6 more
doaj   +1 more source

Convection-driven Multiscale Magnetic Fields Determine the Observed Solar Disk Gamma Rays

The Astrophysical Journal
The solar disk is a continuous source of GeV–TeV gamma rays. The emission is thought to originate from hadronic Galactic cosmic rays (GCRs) interacting with the gas in the photosphere and uppermost convection zone after being reflected by solar magnetic ...
Jung-Tsung Li, Mahboubeh Asgari-Targhi, John F. Beacom, Annika H. G. Peter   +3 more
doaj   +1 more source

Differential Rotation of the Solar Chromosphere: A Century-long Perspective from Kodaikanal Solar Observatory Ca ii K Data

The Astrophysical Journal
Chromospheric differential rotation is a key component in comprehending the atmospheric coupling between the chromosphere and the photosphere at different phases of the solar cycle. In this study, we therefore utilize the newly calibrated multidecadal Ca
Dibya Kirti Mishra, Srinjana Routh, Bibhuti Kumar Jha, Theodosios Chatzistergos, Judhajeet Basu, Subhamoy Chatterjee, Dipankar Banerjee, Ilaria Ermolli   +7 more
doaj   +1 more source

On the Surface Waves in the Solar Photosphere

, 2001
3 pages, paper is available only in ps ...
openaire   +2 more sources

Measuring the magnetic fields in the chromospheres of low-mass stars. [PDF]

Nat Commun
Cang T, Petit P, Donati JF, Tian H, Fu J, Li H, Bellotti S, Hu X, Ma X, Lopez Ariste A, Xing K, Morin J, Lu H, Zong W.   +13 more
europepmc   +2 more sources

Oscillatory Dynamics and Energy Transport in Twisted Magnetic Flux Tubes of the Solar Photosphere. [PDF]

Sol Phys
Alanezy AS, Silva SSA, Ballai I, Verth G, Fedun V.   +4 more
europepmc   +1 more source

Ubiquitous Kelvin-Helmholtz instabilities driving plasma mixing on the Sun. [PDF]

Nature
Kuridze D, Wöger F, van Noort M, Rempel M, Cameron R, Rimmele T, Solanki SK, Jaeggli SA, Tritschler A, Uitenbroek H, Przybylski D, Boboltz DA.   +11 more
europepmc   +1 more source