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Short-term optical variability of 4C 29.45

Aykut ÖZDÖNMEZ (Atatürk Üniversitesi, Fen Fakültesi, Astronomi ve Uzay Bilimleri Bölümü, Erzurum, Türkiye)
Turkish Journal of Physics
0 0
Yıl: 2023 Cilt: 47 Sayı: 3 Sayfa Aralığı: 124 - 129 Metin Dili: İngilizce DOI: 10.55730/1300-0101.2742 İndeks Tarihi: 14-03-2024

Short-term optical variability of 4C 29.45

Öz:
We observed the flat-spectrum radio quasar 4C 29.45 in the BVRI optical bands for 39 nights from February 2022 to July 2022 with the T60 telescope at T ̈UB ̇ITAK National Observatory (TUG) in Turkey. In this study, we aimed to study flux, color, and spectral variability on short timescales. The object was in an active (bright) phase with an average optical R-band brightness of 14.7 mag and was variable in the BVRI bands throughout the monitoring period. We analyzed the flux variability during our observation period, and the variability amplitudes in V, R, and I bands were determined to be 220% , 208% , and 209% , respectively. Optical spectral energy distributions of 4C 29.45 were derived from the observational data of 33 nights, indicating spectral indices ranging from 1.032 to 1.573. We found modest correlations between optical light curves, and between R-band light curve and spectral indices, suggesting that the time lag ranges from several hours to days. Investigation on relation between spectral and color indices versus R-band magnitude revealed achromatic trend during the bright phase of 4C 29.45 in the first half of 2022. Our periodicity search suggested that the periodicity would be larger than 100 days, and no significant signal for periodicity was found for short timescales.
Anahtar Kelime: AGN blazar flux variability

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
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APA ÖZDÖNMEZ A (2023). Short-term optical variability of 4C 29.45. , 124 - 129. 10.55730/1300-0101.2742
Chicago ÖZDÖNMEZ Aykut Short-term optical variability of 4C 29.45. (2023): 124 - 129. 10.55730/1300-0101.2742
MLA ÖZDÖNMEZ Aykut Short-term optical variability of 4C 29.45. , 2023, ss.124 - 129. 10.55730/1300-0101.2742
AMA ÖZDÖNMEZ A Short-term optical variability of 4C 29.45. . 2023; 124 - 129. 10.55730/1300-0101.2742
Vancouver ÖZDÖNMEZ A Short-term optical variability of 4C 29.45. . 2023; 124 - 129. 10.55730/1300-0101.2742
IEEE ÖZDÖNMEZ A "Short-term optical variability of 4C 29.45." , ss.124 - 129, 2023. 10.55730/1300-0101.2742
ISNAD ÖZDÖNMEZ, Aykut. "Short-term optical variability of 4C 29.45". (2023), 124-129. https://doi.org/10.55730/1300-0101.2742
APA ÖZDÖNMEZ A (2023). Short-term optical variability of 4C 29.45. Turkish Journal of Physics, 47(3), 124 - 129. 10.55730/1300-0101.2742
Chicago ÖZDÖNMEZ Aykut Short-term optical variability of 4C 29.45. Turkish Journal of Physics 47, no.3 (2023): 124 - 129. 10.55730/1300-0101.2742
MLA ÖZDÖNMEZ Aykut Short-term optical variability of 4C 29.45. Turkish Journal of Physics, vol.47, no.3, 2023, ss.124 - 129. 10.55730/1300-0101.2742
AMA ÖZDÖNMEZ A Short-term optical variability of 4C 29.45. Turkish Journal of Physics. 2023; 47(3): 124 - 129. 10.55730/1300-0101.2742
Vancouver ÖZDÖNMEZ A Short-term optical variability of 4C 29.45. Turkish Journal of Physics. 2023; 47(3): 124 - 129. 10.55730/1300-0101.2742
IEEE ÖZDÖNMEZ A "Short-term optical variability of 4C 29.45." Turkish Journal of Physics, 47, ss.124 - 129, 2023. 10.55730/1300-0101.2742
ISNAD ÖZDÖNMEZ, Aykut. "Short-term optical variability of 4C 29.45". Turkish Journal of Physics 47/3 (2023), 124-129. https://doi.org/10.55730/1300-0101.2742
Sayfa Oluşturulma Tarihi
24-04-2024 8:43

İLETİŞİM

TÜBİTAK ULAKBİM TR Dizin

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06530 Çankaya / ANKARA +90 (312) 298 92 00

trdizin@tubitak.gov.tr

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