42 citations · 165 across the 13 of their papers we have counts for
13 papers
Multiband Color Monitoring of 3I/ATLAS through Ground-Based Relay Observations
Ariel Graykowski, Bryce Bolin, Laura-May Abron +140
We present multiband, long-baseline photometric observations of interstellar comet 3I throughout its 2025--2026 apparition using coordinated ground-based global relay observations.…
Investigating the System Configuration of Kepler-451 through Orbital Period Variations: Dynamical and Magnetic Interpretations
Huseyin Er, Aykut Ozdonmez, M. Emir Kenger +5
We present an analysis of eclipse timing variations in Kepler-451 using data spanning 2004-2024 from both ground- and space-based observations. Using two datasets, DS-A and DS-B, w…
Long-term Orbital Period Variations of the Eclipsing Dwarf Nova HT Cas
Aykut Ozdonmez, Huseyin Er, Ilham Nasiroglu +7
We present a comprehensive analysis of the long-term orbital period variations in the short-period eclipsing dwarf nova HT Cas. By combining our new high-precision mid-eclipse time…
Intraday Optical Variability of BL Lacertae during its Highly Active 2020-2024 Phase
A. Takey, Ergün Ege, B. M. Mihov +12
We present an analysis of the intraday flux and spectral variability of BL Lacertae from 2020 September 30 to 2024 December 7, covering its highest recorded brightness and low, int…
Investigating Optical Variability of the Blazar S5 0716+714 On Diverse Time-scales
Ergün Ege, Aykut Özdönmez, Aditi Agarwal +1
We present the results of the observational study of the blazar S5 0716+716 in the optical bands B, V, R, and I between March 2019 and August 2023 to investigate its variability on…
The changing material around (2060) Chiron from an occultation on 2022 December 15
J. L. Ortiz, C. L. Pereira, B. Sicardy +30
We could accurately predict the shadow path and successfully observe an occultation of a bright star by Chiron on 2022 December 15. The Kottamia Astronomical Observatory in Egypt d…
Analysis of the intra-night variability of BL Lacertae during its August 2020 flare
Aditi Agarwal, B. Mihov, Vipul Agrawal +7
We present an analysis of the photometry of the blazar BL Lacertae on diverse timescales from mid-July to mid-September 2020. We have used 11 different optical telescopes ar…
Multi-wavelength study of TeV blazar 1ES 1218+304 using gamma-ray, X-ray and optical observations
Rishank Diwan, Raj Prince, Aditi Agarwal +6
We report the multi-wavelength study for a high-synchrotron-peaked BL Lac 1ES 1218+304 using near-simultaneous data obtained during the period from January 1, 2018, to May 31, 2021…
Characterizing the optical nature of the blazar S5 1803+784 during its 2020 flare
A. Agarwal, Ashwani Pandey, Aykut Özdönmez +3
We report the results from our study of the blazar S5 1803+784 carried out using the quasi-simultaneous , , , and observations from May 2020 to July 2021 on 122 nights…
Multi-wavelength temporal and spectral analysis of Blazar S5 1803+78
Shruti Priya, Raj Prince, A. Agarwal +3
Blazars are a class of AGN, one of their jets is pointed towards the earth. Here, we report about the multi-wavelength study for blazar S5 1803+78 between MJD 58727 to MJD 59419. W…
Multi-band behaviour of the TeV blazar PG 1553+113 in optical range on diverse timescales
A. Agarwal, B. Mihov, I. Andruchow +11
Context. The TeV BL Lac object PG 1553+113 is one of the primary candidates for a binary supermassive black hole system. Aims. We study the flux and spectral variability of PG 1553…
Multi-band optical variability of 3C 279 on diverse timescales
Aditi Agarwal, Sergio A. Cellone, Ileana Andruchow +8
We have monitored the flat spectrum radio quasar, 3C 279, in the optical , , and passbands from 2018 February to 2018 July for 24 nights, with a total of 716 frames,…
A New Catalogue of Galactic Novae: Investigation of the MMRD relation & Spatial Distribution
Aykut Özdönmez, Ergün Ege, Tolga Güver +1
In this study, a new Galactic novae catalogue is introduced collecting important parameters of these sources such as their light curve parameters, classifications, full width half…