Results 111 to 120 of about 881 (218)

Numerical Experiment on the Influence of Granulation-induced Waves on Solar Chromosphere Heating and Plasma Outflows in a Magnetic Arcade

The Astrophysical Journal
This paper offers a fresh perspective on solar chromosphere heating and plasma outflows, focusing on the contribution of waves generated by solar granulation.
M. Kumar, K. Murawski, B. Kuźma, E. K. J. Kilpua, S. Poedts, R. Erdélyi   +5 more
doaj   +1 more source

Chromospheric explosions

, 1986
Three issues relative to chromospheric explosions were debated. (1) Resolved: The blue-shifted components of x-ray spectral lines are signatures of chromospheric evaporation.
Doschek, G. A., theory. (3) Resolved: Most chromospheric h   +1 more
core  

Chromospheric Response to Nanoflares from IRIS2+ Inversion

The Astrophysical Journal
Nanoflares are considered one of the key mechanisms for heating the solar corona. Because they are difficult to observe directly, measurements at footpoints of coronal loops in the lower atmosphere can provide insight into their properties.
Kyuhyoun Cho, Paola Testa, Alberto Sainz Dalda, Vanessa Polito, Bart De Pontieu   +4 more
doaj   +1 more source

On the Response of the Transition Region and the Corona to Rapid Excursions in the Chromosphere

The Astrophysical Journal
Spicules are the thin hair/grass-like structures that are prominently observed at the chromospheric solar limb. It is believed that fibrils and rapid blueshifted and redshifted excursions (RBEs and RREs; collectively referred to as REs) correspond to on ...
Ravi Chaurasiya, A. Raja Bayanna, R. E. Louis, T. M. D. Pereira, S. K. Mathew   +4 more
doaj   +1 more source

Self-heating and its possible relationship to chromospheric heating in slowly rotating stars

, 2010
The efficiency of non-modal self-heating by acoustic wave perturbations is examined. Considering different kinds of kinematically complex velocity patterns, we show that non-modal instabilities arising in these inhomogeneous flows may lead to significant
Osmanov, Zaza, Poedts, Stefaan, Rogava, A.   +2 more
core   +1 more source

Acoustic Heating of the Solar Chromosphere: Present Indeed and Locally Dominant

The Astrophysical Journal, 2007
We investigate the physical reality of acoustic heating in the solar chromosphere. Evidence is provided that contrary to previous claims by Fossum & Carlsson, high-frequency acoustic waves are indeed sufficient to heat the nonmagnetic solar chromosphere.
Cuntz, Matthias, Rammacher, Wolfgang, Musielak, Zdzislaw E.   +2 more
openaire   +2 more sources

Comprehensive Synthesis of Magnetic Tornado: Cospatial Incidence of Chromospheric Swirls and Extreme-ultraviolet Brightening

The Astrophysical Journal Letters
Magnetic tornadoes, characterized as impulsive Alfvén waves initiated by photospheric vortices in intergranular lanes, are considered efficient energy channels to the corona.
Hidetaka Kuniyoshi, Souvik Bose, Takaaki Yokoyama   +2 more
doaj   +1 more source

Mapping the Longitudinal Magnetic Field in the Atmosphere of an Active Region Plage from the Inversion of the Near-ultraviolet CLASP2.1 Spectropolarimetric Data

The Astrophysical Journal
We apply the HanleRT Tenerife Inversion Code to the spectropolarimetric observations obtained by the Chromospheric Layer Spectropolarimeter. This suborbital space experiment measured the variation with wavelength of the four Stokes parameters in the near-
Hao Li, Tanausú del Pino Alemán, Javier Trujillo Bueno, Ryohko Ishikawa, Ernest Alsina Ballester, David E. McKenzie, Luca Belluzzi, Donguk Song, Takenori J. Okamoto, Ken Kobayashi, Laurel A. Rachmeler, Christian Bethge, Frédéric Auchère   +12 more
doaj   +1 more source

Wave propagation, phase mixing and dissipation in Hall MHD

, 2012
In this thesis the effect of the Hall term in the generalised Ohm’s law on Alfvén (shear) and fast wave propagation and dissipation in the ion cyclotron frequency range is investigated.
Threlfall, James W.
core  

Chromospheric Heating due to Cancellation of Quiet Sun Internetwork Fields

, 2018
The heating of the solar chromosphere remains one of the most important questions in solar physics. Our current understanding is that small-scale internetwork (IN) magnetic fields play an important role as a heating agent.
De Pontieu, Bart Walter, Esteban Pozuelo, S., J. de la Cruz Rodríguez, Gošić, Milan, Polito, Vanessa, de la Cruz Rodriguez, Jaime, De Pontieu, B., Esteban Pozuelo, Sara,, Ortiz, Ada, M. Gošić, Ortiz, A., Polito, V., Carlsson, Mats, V. Polito, de la Cruz Rodríguez, Jaime,, L. R. Bellot Rubio, M. Carlsson, Carlsson, M., Bellot Rubio, L. R., S. Esteban Pozuelo, B. De Pontieu, A. Ortiz, Gošić, M.   +22 more
core   +1 more source