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An investigation of the causal relationship between sunspot groups and coronal mass ejections by determining source active regions
(Royal Astronomical Society, 2021)
Although the source active regions of some coronal mass ejections (CMEs) were identified in CME catalogues, vast majority of CMEs do not have an identified source active region. We propose a method that uses a filtration ...
Can Solar Cycle 25 Be a New Dalton Minimum?
(Springer, 2021)
The aim of this study is to predict solar activity for the next 10 years (Solar Cycle 25) using
a deep learning technique known as a stateful Long Short-Term Memory (LSTM) network.
To achieve this goal the number of daily ...
Cylindrically symmetric unimodular f(R) black holes
(World Scientific Publishing, 2021)
In this paper, we examine massless scalar field by using unimodular f(R) theory. It is taken into account unimodular and cylindrically symmetric spacetime which provides convenience in researching black hole. The field ...
Optimization of chemically sprayed ZnS films by Mn doping
(Elsevier, 2021)
In this study, undoped and Mn doped ZnS films were grown on microscope glass substrates at substrate tem-
perature of 400 ± 5 ◦C by using a low cost Ultrasonic Spray Pyrolysis technique, and the effect of Mn doping on
some ...
Optical counterparts of ULXs in two dwarf galaxies: NGC 4861 and NGC 4449
(Oxford University Press, 2021)
We present the results of a search for optical candidates of ultraluminous X-ray sources (ULXs) in two dwarf galaxies, NGC 4861 and NGC 4449, using Hubble Space Telescope (HST) archival data. With precise astrometry, we ...
Application of quantum self-frictional nonperturbative theory for the study of atomic anharmonic oscillator potentials and their arbitrary derivatives
(Springer, 2021)
The self-frictional (SF) nonperturbative theory, introduced by one of the authors, is used for the evaluation of the V-(pl*()) and V-(alpha*) atomic anharmonic oscillator potentials and their derivatives, where p(l)* = 2l ...
Achieving Predictive Description of Negative Differential Resistance in Molecular Junctions Using a Range-Separated Hybrid Functional
(Wiley-VCH Verlag, 2021)
Range-separated hybrid (RSH) functionals have been recently used to overcome the tendency of traditional density functional theory (DFT) calculations to overestimate the conductance of molecular junctions. Non-equilibrium ...
Mass transfer and tidally tilted pulsation in the Algol-type system TZ Dra
(Oxford University Press, 2022)
Oscillating eclipsing Algols (oEAs) are remarkable systems that allow us to determine accurate fundamental stellar parameters (mass, radius) and probe the stellar interiors through pulsations. TZ Dra is an oEA system ...
New light curve analysis and period changes of the HW Vir-type binary system V1828 Aql
(Elsevier B.V., 2022)
The new BVRI photometric observations of the HW Vir-type eclipsing binary system V1828 Aql (P = 0.11037399 days) were presented. From these measurements, 16 new eclipse times have been obtained. The light curves in BVRI ...
Possible optical counterparts of ULXs in NGC 1672
(John Wiley and Sons Inc, 2023)
In this study, we use archival data from Hubble Space Telescope (HST), Chandra, XMM-Newton, and Swift-XRT, to probe the nature of 9 (X1-X9) candidate ultraluminous X-ray sources (ULXs) in NGC 1672. Our study focuses on ...
