Results 101 to 110 of about 1,559,234 (209)

The Role of Nonlocal Thermal Transport in Flare-driven Chromospheric Evaporation

The Astrophysical Journal
Thermal conduction plays an important role in energy transport during solar flares. Flares heat the solar atmosphere to tens of megakelvins, which, combined with mean free paths in excess of 1 Mm, can cause the heat flux to become nonlocal.
T. Parmenter, T. Arber, S. Belov, T. Goffrey   +3 more
doaj   +1 more source

Chromospheric condensation and heating in small-scale flaring events: Insights from GREGOR/GRIS and coordinated IRIS observations

Astronomy & Astrophysics
We present a detailed analysis of the chromospheric response during a small-scale flaring event observed in the active region NOAA 13394 on 8 August 2023.
Ferrente F., Guglielmino S. L., Romano P., Spadaro D., Murabito M., Contarino L., Andretta V., Ermolli I., González Manrique S. J., Kuckein C., Sasso C., Lezzi S. M.   +11 more
doaj   +1 more source

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

Integrating Solar Heating into an Air Handling Unit to Minimize Energy Consumption [PDF]

, 2010
The purpose of this project was to test a method of integrating solar heating with a small commercial air handling unit (AHU). In order to accomplish this a heat exchanger was placed in the reheat position of the AHU and piped to the solar heating ...
Wilson, Scott A
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

Chromospheric heating by the Farley-Buneman instability

, 2008
Context.Chromospheric heating produces UV emissions that can only occur in an enhanced electron temperature medium. In the quiet Sun the radiative losses are orders of magnitude larger than those in the much hotter corona.
W. K. Peterson, J. M. Fontenla, J. Harder   +2 more
core   +1 more source

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

Spicules and their on-disk counterparts, the main driver for solar chromospheric heating?

, 2016
The question how the outer solar atmosphere is heated from solar photospheric temperatures of about 5800K up to solar chromospheric and coronal temperatures of about 20.000K and millions of degrees respectively, remained without any satisfying answer for centuries. On 4 May 2005, I recorded several time series of Halpha line scans with the GREGOR Fabry-
openaire   +2 more sources

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