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Article
Open AccessAnalysis of Temperature-Dependent Photoluminescence Spectra in Mid-Wavelength Infrared InAs/InAsSb Type-II Superlattice
Photoluminescence (PL) is one of the commonly used methods to determine the energy gap ( \({E}_{\mathrm{g}}\) ...
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Article
Open AccessPhotoluminescence Study of As Doped p-type HgCdTe Absorber for Infrared Detectors Operating in the Range up to 8 µm
A HgCdTe photodiode grown by chemical vapor deposition (MOCVD) on a GaAs substrate operating in the long-wave infrared (LWIR) range was characterized using photoluminescence (PL) measurements. At high temperat...
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Article
Open AccessDLTS Study of Defects in HgCdTe Heterostructure Photodiode
Deep-level transient spectroscopy (DLTS) measurements were performed on HgCdTe heterostructure photodiode grown by metal-organic chemical vapor deposition (MOCVD) on GaAs substrate. In order to extract defects...
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Article
Impulsive origin of solar spicule-like jets
Using the observations of the coronal hole in Si IV 1393.755 Å line as recorded by interface region imaging spectrograph (IRIS) on 8th October 2013, Chen et al. (Astrophys. J. 873(1):79, 2019) have reported no...
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Article
Open AccessMonochromatic Two-Fluid Alfvén Waves in the Partially Ionised Solar Chromosphere
We present new results towards the explanation of the chromospheric-heating problem and the solar-wind origin, using a two-fluid model that takes into account the collisional interaction between ions (protons)...
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Article
Two-fluid numerical model of chromospheric heating and plasma outflows in a quiet-Sun
This paper addresses long-standing solar physics problems, namely, the heating of the solar chromosphere and the origin of the solar wind. Our aim is to reveal the related mechanisms behind chromospheric heati...
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Article
Open AccessNumerical Simulations of Torsional Alfvén Waves in Axisymmetric Solar Magnetic Flux Tubes
We numerically investigate Alfvén waves propagating along an axisymmetric and non-isothermal solar flux tube embedded in the solar atmosphere. The tube magnetic field is current-free and diverges with height, ...
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Article
Numerical Simulations of Solar Spicule Jets at a Magnetic Null-Point
Two-dimensional numerical simulations of jet-like structures in the solar atmosphere are performed. These structures result from a pressure pulse that is launched at the null point of a potential magnetic arca...
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Article
Propagation and dam** of slow MHD waves in a flowing viscous coronal plasma
We investigate the propagation of slow MHD waves in a flowing viscous solar coronal plasma. The compressive viscosity and steady flow along and opposite to the wave propagation are taken into account to study ...
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Article
Open AccessOn the Asymmetric Longitudinal Oscillations of a Pikelner’s Model Prominence
We present analytical and numerical models of a normal-polarity quiescent prominence that are based on the model of Pikelner (Solar Phys. 17, 44, 1971). We derive the general analytical ex...
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Article
A Numerical Model of MHD Waves in a 3D Twisted Solar Flux Tube
We generalize our analytical and numerical models of the solar flux tube on twisted magnetic-field lines. The basic equations and numerical methods have much in common with those of Murawski et al. (Astron. Astro...
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Article
Open AccessOn Thermal-Pulse-Driven Plasma Flows in Coronal Funnels as Observed by the Hinode/EUV Imaging Spectrometer (EIS)
Using one-arcsecond-slit-scan observations from the Hinode/EUV Imaging Spectrometer (EIS) on 5 February 2007, we find the plasma outflows in the open and expanding coronal funnels ...
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Article
Does the region of flare-energy release work as a vacuum-cleaner?
We aim to explore the unusual flare event which took place in the solar atmosphere on September 22, 2011 and propose its theoretical interpretation. We analyze the process of energy release in the twisted magn...
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Article
Open AccessNumerical Simulations of Magnetoacoustic–Gravity Waves in the Solar Atmosphere
We investigate the excitation of magnetoacoustic–gravity waves generated from localized pulses in the gas pressure as well as in the vertical component of velocity. These pulses are initially launched at the t...
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Article
Multiwavelength Observations of Supersonic Plasma Blob Triggered by Reconnection-Generated Velocity Pulse in AR10808
Using multi-wavelength observations of Solar and Heliospheric Observatory (SoHO)/Michelson Doppler Imager (MDI), Transition Region and Coronal Explorer (TRACE, 171 Å), and Hα from Culgoora Solar Observatory at Na...
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Article
Numerical Simulations of Impulsively Generated Magnetosonic Waves in a Coronal Loop
We consider impulsively excited magnetosonic waves in a highly magnetized coronal loop that is approximated by a straight plasma slab of enhanced mass density. Numerical results reveal that wavelet spectra of ...
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Article
Numerical Simulations of Vertical Oscillations of a Curved Coronal Loop
We consider an impulsively-started, vertical excitation of a solar coronal loop that is embedded into a potential arcade. The two-dimensional numerical model we implement includes the effects of line curvature...
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Article
Evolutionary Computation in Structural Design
The paper provides the results of preliminary research on the application of evolutionary computation to integrated structural design in which a complex design support tool automatically conducts both conceptu...
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Article
Impulsively generated MHD waves and their detectability in solar coronal loops
Impulsively generated magnetohydrodynamic waves in solar coronal loops, with arbitrary plasma β, are studied numerically by a flux-corrected transport algorithm. Numerical results show that the total reflectio...
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Article
Modern Numerical Schemes for Solving Magnetohydrodynamic Equations
In this paper several modern shock-capturing schemes for solving hydrodynamic and magnetohydrodynamic equations are reviewed. This review covers a wide range of explicit and implicit schemes as well as those i...
