Results 61 to 70 of about 5,669 (225)

Structure of the chromosphere-corona transition region [PDF]

open access: yes, 1971
Structure and energy distribution of chromosphere-corona transition ...
Moore, R. L., Fung, P. C. W.
core  

Dark Off-limb Gap:Manifestation of a Temperature Minimum and the Dynamic Nature of the Chromosphere [PDF]

open access: yes, 2022
We study off-limb emission of the lower solar atmosphere using high-resolution imaging spectroscopy in the Hβ and Ca ii 8542 Å lines obtained with the CHROMospheric Imaging Spectrometer (CHROMIS) and the CRisp Imaging SpectroPolarimeter (CRISP) on the ...
Kuridze, David   +7 more
core   +1 more source

Intrastriatal Grafting of Chromospheres: Survival and Functional Effects in the 6-OHDA Rat Model of Parkinson's Disease. [PDF]

open access: yesPLoS ONE, 2016
Cell replacement therapy in Parkinson's disease (PD) aims at re-establishing dopamine neurotransmission in the striatum by grafting dopamine-releasing cells. Chromaffin cell (CC) grafts produce some transitory improvements of functional motor deficits in
Alejandra Boronat-García   +4 more
doaj   +1 more source

Reconstructing Historical Solar Indices for Predicting Past Space Weather Events

open access: yesSpace Weather, Volume 24, Issue 4, April 2026.
Abstract Modeling and forecasting the near‐Earth space environment, specifically the thermosphere, is particularly important because it affects the motion of low‐Earth orbit objects through atmospheric drag. Solar indices such as F10.7, S10.7, M10.7, and Y10.7 are commonly used as inputs to ionospheric and thermospheric density models.
Poshan Belbase   +4 more
wiley   +1 more source

Dynamics of fine structure in the solar chromosphere [PDF]

open access: yes, 2006
This thesis is concerned with the dynamics of fine structure of the solar chromosphere and transition region, in both quiet sun and active regions. It contains six chapters of observational studies.
Wijn, A.G. de
core  

Chromospheric and Coronal Spectra [PDF]

open access: yesHighlights of Astronomy, 1995
The interpretation of chromospheric and coronal spectra requires accurate ionization and recombination rates, collision strengths and transition probabilities. Recent projects to improve calculations of opacities in stellar interiors have led to a large amount of new atomic data.
openaire   +3 more sources

Spatial and temporal variations of Ca II K line profile shapes in different structures of solar chromosphere. I. Features of individual profiles

open access: yesSolar-Terrestrial Physics, 2018
We have studied Ca II K line profiles, using two time series of spectrograms taken in two regions near the solar disk center. In each of the regions, the spectrograph slit cut out several areas of the quiet region and a plage.
Turova I.P.   +2 more
doaj   +1 more source

Searching for Rotational X‐Ray Modulation on TIC 277539431

open access: yesAstronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT TIC 277539431, a fast rotating M7 dwarf, was detected to host the highest latitude flare to date at 81°$$ {81}^{{}^{\circ}} $$. Magnetic activity like stellar flares occurring at high latitude indicate occurrence of coronal loops at these latitudes on fully‐convective M dwarfs. In contrast, sunspots usually occur below 30°$$ {30}^{{}^{\circ}} $
Desmond Dsouza   +2 more
wiley   +1 more source

Survival and motor efficacy of chromosphere cell grafts.

open access: yes, 2016
Survival and motor efficacy of chromosphere cell grafts.
René Drucker-Colín (2950836)   +4 more
core   +1 more source

The Role of Partial Ionization Effects in the Chromosphere [PDF]

open access: yes, 2015
The energy for the coronal heating must be provided from the convection zone. The amount and the method by which this energy is transferred into the corona depends on the properties of the lower atmosphere and the corona itself.
Martinez-Sykora, Juan   +3 more
core   +1 more source

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