Výsledky vyhledávání - "Nasser M. Ahmed"

Akademický článek

A deep investigation of the poorly studied open cluster King 18 using CCD VRI, Gaia DR3 and 2MASS

Autor: Nasser M. Ahmed, R. Bendary, R. M. Samir, E. G. Elhosseiny

Publikováno v: Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)

Abstract In this paper, we re-estimate the astrometric and photometric parameters of the young open star cluster King 18 based on Gaia Data Release 3 (DR3), Two Micron All-sky Survey (2MASS) and VRI CCD observations using the f/4.9 Newtonian focus of

Externí odkaz: https://doaj.org/article/7e251ab771694a33b5bc6cd8f0e2f28e

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Akademický článek

A Suzaku study of the low mass X-ray binary Aquila X-1 in the different states

Autor: Abdelfatah, Ahmed S., Nasser, M. Ahmed, Abdelbar, Ahmed M., Beheary, M.M.

Publikováno v: In Journal of High Energy Astrophysics August 2021 31:12-22

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Kottamia Faint Imaging Spectro-Polarimeter (KFISP): opto-mechanical design, software control and performance analysis

Autor: Ali Takey, Gamal B. Ali, Y. H. M. Hendy, Farag I. Y. Elnagahy, H. A. Ismail, G. M. Hamed, Yosry A. Azzam, Michitoshi Yoshida, A. Essam, Peter Mack, S. M. Saad, A. Shokry, Nasser M. Ahmed, Hiroshi Akitaya, I. Zead, Koji S. Kawabata

Publikováno v: Experimental Astronomy

In this paper we describe the Kottamia Faint Imaging Spectro-Polarimeter (KFISP) that has been recently developed and designed to be mounted at the Cassegrain focus of the 1.88 m telescope at Kottamia Astronomical Observatory (KAO), Egypt. The optica

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12b27b7d4c8d55588fa657e447766fab
https://doi.org/10.1007/s10686-021-09802-z

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(KFISP) Kottamia faint imaging spectro-polarimeter: opto-mechanical design and performance analysis

Publikováno v: Ground-based and Airborne Instrumentation for Astronomy VIII.

We describe the Kottamia Faint Imaging Spectro-Polarimeter (KFISP) that has been recently developed and designed to be mounted to the Cassegrain focus of the 1.88m telescope at Kottamia Astronomical Observatory (KAO), Egypt. The optical design of KFI

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fca71d5799621f49144e0f5de4f78cfc
https://doi.org/10.1117/12.2561664

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First CCD photometric observation of the W-UMa eclipsing binary system 1SWASP J064501.21+342154.9

Autor: A. Essam, Ghada F. Mohamadien, Nasser M. Ahmed, Gamal B. Ali

Publikováno v: NRIAG Journal of Astronomy and Geophysics, Vol 2, Iss 2, Pp 256-265 (2013)

New BVRI light curves of the eclipsing binary system 1SWASP J064501.21+342154.9 (J0645) have been constructed based on CCD observations that were obtained by using the 1.88-m telescope of Kottamia Astronomical Observatory (KAO), Egypt on January and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8c5e22b9088f7e0a49ef6443e35989a
http://www.sciencedirect.com/science/article/pii/S2090997713000527

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Synthesis and characterization thin films of conductive polymer (PANI) for optoelectronic device application

Autor: Kamarulazizi Ibrahim, Amer N. Jarad, Nasser M. Ahmed

Publikováno v: AIP Conference Proceedings.

In this work we report preparation and investigation of structural and optical properties of polyaniline conducting polymer. By using sol-gel in spin coating technique to synthesize thin films of conducting polymer polyaniline (PANI). Conducting poly

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9020daec530f8d5d17111711d49c9ca1
https://doi.org/10.1063/1.4948838

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