17 citations · 40 across the 7 of their papers we have counts for
7 papers
A wiggling filamentary jet at the origin of the blazar multi-wavelength behaviour
C. M. Raiteri, M. Villata, M. I. Carnerero +96
Blazars are beamed active galactic nuclei known for their strong multi-wavelength variability on timescales from years down to minutes. We aim to investigate the suitability of the…
Multi-parameter study for a new Ground-Based telescope in Egypt
Mohamed S. Darwish, Hazem Badreldin, Nasser M. Ahmed +10
A multi-parameter analysis was conducted to evaluate the impact of meteorological parameters, night sky brightness and seismic hazard on proposed sites for the new optical/infrared…
Multi-band analyses of the bright GRB 230812B and the associated SN2023pel
T. Hussenot-Desenonges, T. Wouters, N. Guessoum +109
GRB~230812B is a bright and relatively nearby () long gamma-ray burst (GRB) that has generated significant interest in the community and has thus been observed over the en…
Spectroscopic and Photometric Study of the new Scuti Star ASAS J063309+1810.8
Mohamed I. Nouh, Mohamed Abdel-Sabour, Ahmed Shokry +3
We present BVR observations and low-resolution spectra collected by the Kottamia Astronomical Observatory 1.88 m telescope (KAO) for the new pulsating star ASAS J063309+1810.8 (her…
Photometric and Spectroscopic Analysis of the SX Phe Star BL Cam
Mohamed Abdel-Sabour, Mohamed I. Nouh, Ahmed Shokry +5
In the present paper, we report the photometric and spectroscopic observations obtained by the 1.88 m telescope at the Kottamia astronomical observatory of the pulsating star BL Ca…
Studying Spectral Behavior, Accretion Processes and Photometric Behavior of Some Binary Stars in the Ultraviolet and Optical Regions
Gamal M. Hamed
We study the evolution of the normalized flux of selected ultraviolet emission lines of three classical novae (PW Vul, V1668 Cyg and V1974 Cyg). Different phases ofthe outbursts ar…
Discovery of Dramatic Optical Variability in SDSS J1100+4421: A Peculiar Radio-Loud Narrow-Line Seyfert 1 Galaxy?
Masaomi Tanaka, Tomoki Morokuma, Ryosuke Itoh +55
We present our discovery of dramatic variability in SDSS J1100+4421 by the high-cadence transient survey Kiso Supernova Survey (KISS). The source brightened in the optical by at le…