Results 121 to 130 of about 15,079 (225)

Determining the Magnetic Field of Active Region Plages Using the Whole CLASP2/2.1 Spectral Window

The Astrophysical Journal
The Chromospheric LAyer SpectroPolarimeter missions, CLASP2 and CLASP2.1, demonstrated that the near-UV spectral region between 279.30 and 280.68 nm is suitable for studying the magnetism of the solar chromosphere.
David Afonso Delgado, Tanausú del Pino Alemán, Javier Trujillo Bueno, Ryohko Ishikawa, Ernest Alsina Ballester, David E. McKenzie, Luca Belluzzi, Christian Bethge, Ken Kobayashi, Takenori J. Okamoto, Laurel A. Rachmeler, Donguk Song, Jiří Štěpán, Bart de Pontieu, Adam R. Kobelski, Genevieve D. Vigil, Frédéric Auchère, Ryouhei Kano, Amy Winebarger   +18 more
doaj   +1 more source

Solar Flare Ribbon Fronts. II. Evolution of Heating Rates in Individual Flare Footpoints

The Astrophysical Journal
Solar flare ribbon fronts appear ahead of the bright structures that normally characterize solar flares, and can persist for an extended period of time in spatially localized patches before transitioning to “regular” bright ribbons. They likely represent
Graham S. Kerr, Vanessa Polito, Yan Xu, Joel C. Allred   +3 more
doaj   +1 more source

Vortex Motions in the Solar Atmosphere: Definitions, Theory, Observations, and Modelling. [PDF]

Space Sci Rev, 2023
Tziotziou K, Scullion E, Shelyag S, Steiner O, Khomenko E, Tsiropoula G, Canivete Cuissa JR, Wedemeyer S, Kontogiannis I, Yadav N, Kitiashvili IN, Skirvin SJ, Dakanalis I, Kosovichev AG, Fedun V.   +14 more
europepmc   +1 more source

Solar Chromospheric Heating by Magnetohydrodynamic Waves: Dependence on the Inclination of the Magnetic Field

The Astrophysical Journal
A proposed mechanism for solar chromospheric heating is magnetohydrodynamic waves propagating upward along magnetic field lines and dissipating their energy in the chromosphere.
Mayu Koyama, Toshifumi Shimizu
doaj   +1 more source

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

Transverse oscillations and an energy source in a strongly magnetized sunspot. [PDF]

Nat Astron, 2023
Yuan D, Fu L, Cao W, Kuźma B, Geeraerts M, Trelles Arjona JC, Murawski K, Van Doorsselaere T, Srivastava AK, Miao Y, Feng S, Feng X, Noda CQ, Cobo BR, Su J.   +14 more
europepmc   +1 more source

Turbulence in the Chromosphere

Publications of the Astronomical Society of Japan, 1962
Abstract Turbulence velocities in the chromosphere were determined from the base up to 10,000 km. Measurement was made on flash spectrograms of 1958 eclipse in South Pacific. The dispersion was about 2.3 A/mm and the resolution in terms of velocity was 2–3 km/sec in most probable velocity ξ0.
openaire   +2 more sources

Constraints on Acoustic Wave Energy Fluxes and Radiative Losses in the Solar Chromosphere from Non-LTE Inversions

The Astrophysical Journal
Accurately assessing the balance between acoustic wave energy fluxes and radiative losses is critical for understanding how the solar chromosphere is thermally regulated.
J. M. da Silva Santos, M. Molnar, I. Milić, M. Rempel, K. Reardon, J. de la Cruz Rodríguez   +5 more
doaj   +1 more source

SUTO-Solar Through-Turbulence Open Image Dataset. [PDF]

Sensors (Basel), 2022
Popowicz A, Orlov V.
europepmc   +1 more source

Calcium Bright Knots and the Formation of Chromospheric Anemone Jets on the Sun

The Astrophysical Journal Letters
Space-based observations show that the solar atmosphere from the solar chromosphere to the solar corona is filled with small-scale jets and is linked with small-scale explosions.
Kunwar Alkendra Pratap Singh, Keisuke Nishida, Kazunari Shibata   +2 more
doaj   +1 more source