A5018613425- Astronomical Observations and Instrumentation
- Stellar, planetary, and galactic studies
- Fractional Differential Equations Solutions
- Astronomy and Astrophysical Research
- Nonlinear Waves and Solitons
- Solar Radiation and Photovoltaics
- Blind Source Separation Techniques
- Gamma-ray bursts and supernovae
- Differential Equations and Numerical Methods
- Inertial Sensor and Navigation
- Pulsars and Gravitational Waves Research
- Energy Load and Power Forecasting
- Atmospheric Ozone and Climate
- Spectroscopy and Chemometric Analyses
- Optical and Acousto-Optic Technologies
- Atmospheric aerosols and clouds
- Astrophysical Phenomena and Observations
- Spectroscopy and Laser Applications
- Molecular Spectroscopy and Structure
- Climate variability and models
- Wind Energy Research and Development
- Statistical Mechanics and Entropy
- Advanced optical system design
- Frequency Control in Power Systems
- Mathematical functions and polynomials
National Research Institute of Astronomy and Geophysics
2008-2024
Majmaah University
2014-2018
Czech Technical University in Prague
2004-2006
University of Chemistry and Technology, Prague
2006
ABSTRACT GRB 230812B is a bright and relatively nearby (z = 0.36) long gamma-ray burst (GRB) that has generated significant interest in the community thus been observed over entire electromagnetic spectrum. We report 80 observations X-ray, ultraviolet, optical, infrared, submillimetre bands from GRANDMA (Global Rapid Advanced Network for Multimessenger Addicts) network of observatories observational partners. Adding complementary data literature, we then derive essential physical parameters...
Few studies have been implemented to evaluate whether the renewable energy generation could fit into industrial locations in Saudi Arabia. We completed this feasibility study investigate using photovoltaic (PV) solar arrays power cities at Arabia is economically feasible. The case a factory Zulfi city, Riyadh Region. used National Renewable Energy Laboratory's modeling tool, system advisor model (SAM) economic benefits of 150 kW DC PV cover 100% monthly demand. Over 25 years, estimated...
The helium burning phase represents the second stage that star used to consume nuclear fuel in its interior. In this stage, three elements, carbon, oxygen, and neon, are synthesized. present paper is twofold: firstly, it develops an analytical solution system of conformable fractional differential equations network, where we used, for purpose, series expansion method obtained recurrence relations product abundances, is, helium, neon. Using four different initial calculated 44 gas models...
The isothermal gas sphere is a particular type of Lane-Emden equation and used widely to model many problems in astrophysics like stars, star clusters, the formation galaxies. In this paper, we present computational scheme simulate conformable fractional using an artificial neural network (ANN) technique compare obtained results with analytical solution deduced Taylor series. We performed our calculations, trained ANN, tested it wide range parameter. Besides Emden functions, calculated...
Innovation in the ground and space-based instruments has taken us into a new age of spectroscopy, which large amount stellar content is becoming available. So, automatic classification spectra became subjective last three decades due to availability observed spectral database as well theoretical spectra. In present paper, we develop an Artificial Neural Network (ANN) algorithm for automated The been applied extract fundamental parameters optical some hot helium-rich white dwarf stars by...
Abstract Proposed hybrid minigrid two area system simulation model encompassing Photo Voltaic (PV) system, Wind Turbines (WT), diesel generators and Energy Storage Systems with intelligent based optimal Frequency Controllers (FCs) empowering the new Egypt large optical telescope (ELOT) site is presented in this research. Technical study specifications for a PV solar of 1000 Kw introduced. Intelligent fine optimized Proportional Integral Derivative (PID) Fuzzy self-tuned PID (FSTPID)...
We describe the Kottamia Faint Imaging Spectro-Polarimeter (KFISP) that has been recently developed and designed to be mounted Cassegrain focus of 1.88m telescope at Astronomical Observatory (KAO), Egypt. The optical design KFISP is such it can used in various modes operation. These are: direct imaging, spectroscopic (low medium resolution), polarimetric spectro-polarimetric. an all-refractive meet requirements includes a focal reducer with corrector section, collimator parallel beam section...
Over the last few decades, artificial neural networks (ANN) have played an essential role in many areas of human activity and found application branches natural sciences. ANNs been widely used to tackle problems related linear nonlinear differential equations, numerous paradigms for ANN architecture employed. This research proposes a computational technique based on Taylor series solve difficulties connected relativistic gas spheres' Tolman-Oppenheimer-Volkoff equations (TOV). We study two...
GRB~230812B is a bright and relatively nearby ($z =0.36$) long gamma-ray burst (GRB) that has generated significant interest in the community thus been observed over entire electromagnetic spectrum. We report 80 observations X-ray, ultraviolet, optical, infrared, sub-millimeter bands from GRANDMA (Global Rapid Advanced Network for Multi-messenger Addicts) network of observatories observational partners. Adding complementary data literature, we then derive essential physical parameters...
The Kottamia Faint Imaging Spectro-Polarimeter (KFISP) has been recently developed, commissioned and mounted to the Cassegrain focus of 1.88m telescope at astronomical observatory, Egypt. KFISP instrument demagnified from a f/18 with plate scale 6.09"/mm f/6.14 17.8"/mm. A liquid Nitrogen cooled CCD camera 2048×2048 pixels 13.5-micron square pixel size is fixed through an integrated lens. In this paper we describe system, performance, its software control. As well, motion control will be...
In this paper, we are going to introduce the Kottamia Astronomical Observatory, KAO, astronomical community. The current status of telescope together with available instrumentations is described. An upgrade stage including a new optical system and computer controlling both dome achieved. specifications set CCD cameras for direct imaging spectroscopy given. A grating spectrograph recently gifted KAO from Okayama Astrophysical OAO, National Observatories in Japan. This successfully tested...
Abstract Over the last few decades, artificial neural networks (ANN) have played an important role in many areas of human activity and found application branches natural sciences. ANNs been widely used to tackle problems related linear nonlinear differential equations, numerous paradigms for ANN architecture employed. Based on Taylor series, this research proposes a computational technique solve difficulties connected Tolman-Oppenheimer-Volkoff equations (TOV) relativistic gas spheres. We...
Lane-Emden differential equations describe different physical and astrophysical phenomena that include forms of stellar structure, isothermal gas spheres, spherical cloud thermal history, thermionic currents. This paper presents a computational approach to solve the problems related fractional based on neural networks. Such solution will help polytropic spheres which have applications in physics, astrophysics, engineering, several real-life issues. We used Artificial Neural Network (ANN)...
New BVR light curves of the eclipsing binary system NSV 5904 have been constructed based on CCD observations obtained using 1.88-m telescope Kottamia observatory during phase testing and adjusting its optical quality May, 2009. times minima epoch determined from these curves. Using Binary Maker 3.0 (BM3) package, a preliminary determination photometric orbital physical parameters are given.
A new technique for fine alignment and pointing of small non-fixed telescopes is addressed. The based on pattern matching a synthesized image to the actual acquired sky. Synthesis getting coordinates bright stars in sky from database star catalogue. Telescope kinematics are used convert these after correcting major astronomical errors as well perspective distortion. Two algorithms have been matching: point normalized correlation matching. This process solved problem polar movable...