Results 31 to 40 of about 46,680 (310)

Multi-wavelength observations and modeling of a microflare: constraining non-thermal particle acceleration

open access: yesFrontiers in Astronomy and Space Sciences, 2023
In this work we analyze a small B-class flare that occurred on 29 April 2021 and was observed simultaneously by the Interface Region Imaging Spectrograph (IRIS) and the Nuclear Spectroscopic Telescope Array (NuSTAR) X-ray instrument.
Vanessa Polito   +8 more
doaj   +1 more source

Determining solar effects in Neptune’s atmosphere [PDF]

open access: yesNature Communications, 2016
AbstractLong-duration observations of Neptune’s brightness at two visible wavelengths provide a disk-averaged estimate of its atmospheric aerosol. Brightness variations were previously associated with the 11-year solar cycle, through solar-modulated mechanisms linked with either ultraviolet or galactic cosmic ray (GCR) effects on atmospheric particles.
Aplin, K. L., Harrison, R. G.
openaire   +6 more sources

Existence of Purely Alvén Waves in Magnetic Flux Tubes with Arbitrary Cross-Sections

open access: yesPhysics, 2022
We study linear torsional Alfvén waves in a magnetic flux tube with an arbitrary cross-section. We assume that the equilibrium magnetic field is propagating in the z-direction in Cartesian coordinates x,y, and z.
Michael S. Ruderman   +1 more
doaj   +1 more source

Evolution of the thermodynamic properties of a coronal mass ejection in the inner Corona

open access: yesFrontiers in Astronomy and Space Sciences, 2023
The thermodynamic evolution of Coronal Mass Ejections (CMEs) in the inner corona (≤1.5 Rsun) is not yet completely understood. In this work, we study the evolution of thermodynamic properties of a CME core observed in the inner corona on 20 July 2017, by
Jyoti Sheoran   +6 more
doaj   +1 more source

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

open access: yesFEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc   +8 more
wiley   +1 more source

Cosmic sources of the Earth's atmosphere ionization (review)

open access: yesГеофизический журнал, 2017
 Characteristics of the Earth's upper atmosphere vary constantly under the action of electromagnetic emission of the sun, solar wind, streams of galactic and solar cosmic rays as well as of precipitation of captured magnetosphere electrons.
L.V. Raychenko, G.V. Melnik
doaj   +1 more source

Moreton waves and EUV waves in the solar atmosphere

open access: yes地球与行星物理论评, 2023
Solar eruptions, which generate various types of wave phenomena in the solar atmosphere, are sources of space weather perturbations. These waves not only transport a large amount of energy, but also illuminate the properties of the magnetic field and ...
Pengfei Chen
doaj   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

open access: yesAdvanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong   +16 more
wiley   +1 more source

Research progress in coronal magnetic field measurements

open access: yes地球与行星物理论评, 2022
Different solar atmospheric layers are connected by the magnetic field of the Sun, which is the primary source for various types of solar activity. The magnetic activity of the Sun has a significant impact on the solar-terrestrial environment and human ...
Zihao Yang   +6 more
doaj   +1 more source

Solar and Atmospheric Neutrino Oscillations [PDF]

open access: yesPhysica Scripta, 2001
8 pages, LaTeX, 6 figures.
openaire   +3 more sources

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