8 citations · 12 across the 7 of their papers we have counts for
8 papers
UBVRI night sky brightness at Kottamia Astronomical Observatory
Mohamed F. Aboushelib, Abdelfady B. Morcos, Samir Nawar +2
Photoelectric observations of night sky brightness (NSB) at different zenith distances and azimuths, covering all the sky, at the Egyptian Kottamia Astronomical observatory (KAO) s…
X-ray properties of X-CLASS-redMaPPer galaxy cluster sample: The luminosity-temperature relation
Mona Molham, Nicolas Clerc, Ali Takey +7
This paper presents results of a spectroscopic analysis of the X-CLASS-redMaPPer (XC1-RM) galaxy cluster sample. X-CLASS is a serendipitous search for clusters in the X-ray waveban…
Axis of Zodiacal light Near Tropic Cancer
S. Nawar, A. L. Tadross, J. S. Mikhail +2
The axis of zodiacal lights have been obtained in blue and yellow colors using photoelectric observations of zodiacal light. These observations have been carried out at Abu Simbel…
Discontinuity in the Brightness of the Twilight Sky at Different Wavelengths
S. Nawar, A. B. Morcos, A. L. Tadross +1
A search for discontinuity in the sky twilight brightness at different wavelengths and different solar depressions for altitudes 0, 5, 10, 30, 50 & 70 degrees is done. It is found…
Brightness and color of the integrated starlight at celestial, ecliptic and galactic poles
S. Nawar, A. L. Tadross, J. S. Mikhail +1
From photoelectric observations of night sky brightness carried out at Abu-Simbel, Asaad et al. (1979) have obtained values of integrated starlight brightness at different Galactic…
Lense-Thirring Field and the Solar Limb Effect
M. I. Wanas, A. B. Morcos, S. I. El Gammal
Solar-Limb Effect is an observational phenomena connected to the solar gravitational red-shift. It shows a variation of the magnitude of the gravitational red-shift from the center…