Nanoflares - Open Access .click

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Coronal heating via nanoflares [PDF]

, 2008
It has been recently proposed that the coronae of single late-type main sequence stars represent the radiative output from a large number of tiny energy release events, the so-called nanoflares. Although this suggestion is attractive and order of magnitude estimates of the physical parameters involved in the process are consistent with available data ...
Poletto, G., Kopp, R.
openaire +3 more sources

NIR-Activatable, Sequence-Specific Metal-Nucleic Acid Scaffolds for Responsive Uncaging. [PDF]

Angew Chem Int Ed Engl
We demonstrate that long‐range nucleic acid‐mediated electron transfer can drive Pt(IV) photoreduction, establishing a new class of metal‐nucleic acid scaffolds capable of “responsive uncaging,” where hybridization with target DNA or miRNA directly triggers payload release under NIR irradiation.
Sharma A +6 more
europepmc +3 more sources

Nanoflare Theory Revisited [PDF]

The Astrophysical Journal, 2021
Abstract At any scale l in the turbulent inertial range, the magnetic field can be divided up into a large-scale component and a small-scale, high spatial frequency component which undergoes magnetic reversals. Such local reconnections, i.e., on any inertial scale l, seem to be an inseparable part of magnetohydrodynamic (MHD) turbulence,
Amir Jafari, Ethan T. Vishniac, Siyao Xu
openaire +2 more sources

Morphological evidence for nanoflares heating warm loops in the solar corona [PDF]

Astronomy & Astrophysics, 2023
Nanoflares are impulsive energy releases by magnetic reconnection in the braided coronal magnetic field, which is a potential mechanism for heating the corona.
Y. Bi +8 more
semanticscholar +1 more source

How Turbulent is the Magnetically Closed Corona?

Frontiers in Astronomy and Space Sciences, 2021
We argue that the magnetically closed corona evolves primarily quasi-statically, punctuated by many localized bursts of activity associated with magnetic reconnection at a myriad of small current sheets.
James A. Klimchuk, Spiro K. Antiochos
doaj +1 more source

CHROMOSPHERIC NANOFLARES AS A SOURCE OF CORONAL PLASMA. II. REPEATING NANOFLARES [PDF]

The Astrophysical Journal, 2015
The million degree plasma of the solar corona must be supplied by the underlying layers of the atmosphere. The mechanism and location of energy release, and the precise source of coronal plasma, remain unresolved. In earlier work we pursued the idea that warm plasma is supplied to the corona via direct heating of the chromosphere by nanoflares ...
S. J. Bradshaw, J. A. Klimchuk
openaire +2 more sources

Coronal Heating as Determined by the Solar Flare Frequency Distribution Obtained by Aggregating Case Studies

The Astrophysical Journal, 2023
Flare frequency distributions represent a key approach to addressing one of the largest problems in solar and stellar physics: determining the mechanism that counterintuitively heats coronae to temperatures that are orders of magnitude hotter than the ...
James Paul Mason +1001 more
doaj +1 more source

NANOFLARE ACTIVITY IN THE SOLAR CHROMOSPHERE [PDF]

The Astrophysical Journal, 2014
We use ground-based images of high spatial and temporal resolution to search for evidence of nanoflare activity in the solar chromosphere. Through close examination of more than 10^9 pixels in the immediate vicinity of an active region, we show that the distributions of observed intensity fluctuations have subtle asymmetries.
Jess, D. B., Mathioudakis, M., Keys, P. H. +2 more
openaire +4 more sources

Role of Small-scale Impulsive Events in Heating the X-Ray Bright Points of the Quiet Sun

The Astrophysical Journal, 2023
Small-scale impulsive events, known as nanoflares, are thought to be one of the prime candidates that can keep the solar corona hot at its multimillion-Kelvin temperature.
Biswajit Mondal +8 more
doaj +1 more source

The universality of power law slopes in the solar photosphere and transition region observed with HMI and IRIS

Frontiers in Astronomy and Space Sciences, 2023
We compare the size distributions of self-organized criticality (SOC) systems in the solar photosphere and the transition region, using magnetogram data from Helioseismic and Magnetic Imager (HMI) and Interface Region Imaging Spectrograph (IRIS) data ...
Markus J. Aschwanden, Nived Vilangot Nhalil +1 more
doaj +1 more source

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