Multi-Band Optical Variability of Blazar 1ES 2344+514 on Diverse Time-Scales
This study presents the results of multi-band observations from 2022 to 2024 and Zwicky Transient Facility (ZTF) observations from 2018 to 2023, examining the flux variability of the blazar 1ES 2344+514 on diverse time-scales in the optical bands. The blazar has mild short-term variability (STV) and...
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Çanakkale Onsekiz Mart University
2024-09-01
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| Series: | Journal of Advanced Research in Natural and Applied Sciences |
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| Online Access: | https://dergipark.org.tr/en/download/article-file/3926700 |
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| author | Aykut Özdönmez |
| author_facet | Aykut Özdönmez |
| author_sort | Aykut Özdönmez |
| collection | DOAJ |
| description | This study presents the results of multi-band observations from 2022 to 2024 and Zwicky Transient Facility (ZTF) observations from 2018 to 2023, examining the flux variability of the blazar 1ES 2344+514 on diverse time-scales in the optical bands. The blazar has mild short-term variability (STV) and long-term variability (LTV), with small amplitudes of $\sim0.7$ mag and $0.4$ mag for the host subtracted- and included-light curves, respectively. The power-enhanced F-test and the nested Analysis of Variance (ANOVA) statistical tests of the six intra-day light curves show that the blazar has no minute-scale variability. The multiband color behavior analysis revealed a moderate redder-when-brighter (RWB) trend on intra-day time scales, while the LTV shows no detectable color behavior. We found a strong correlation between the ZTF optical light curves without any time lag, but no detectable correlations for the optical band emissions. From our periodicity searches using WWZ and LS methods, three significant quasi-periodic oscillation (QPO) signals in the ZTF light curves are found at about 1.02, 1.3, and 2.85 years. The observational results indicate that the blazar 1ES 2344+514 has a complex variability while emphasizing the need for future observations to unravel its underlying mechanisms. |
| format | Article |
| id | doaj-art-ffe8d330b16e43bc952f545d718a5b31 |
| institution | Kabale University |
| issn | 2757-5195 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Çanakkale Onsekiz Mart University |
| record_format | Article |
| series | Journal of Advanced Research in Natural and Applied Sciences |
| spelling | doaj-art-ffe8d330b16e43bc952f545d718a5b312025-02-05T18:13:03ZengÇanakkale Onsekiz Mart UniversityJournal of Advanced Research in Natural and Applied Sciences2757-51952024-09-0110368470110.28979/jarnas.1483247453Multi-Band Optical Variability of Blazar 1ES 2344+514 on Diverse Time-ScalesAykut Özdönmez0https://orcid.org/0000-0003-1399-5804ATATÜRK ÜNİVERSİTESİThis study presents the results of multi-band observations from 2022 to 2024 and Zwicky Transient Facility (ZTF) observations from 2018 to 2023, examining the flux variability of the blazar 1ES 2344+514 on diverse time-scales in the optical bands. The blazar has mild short-term variability (STV) and long-term variability (LTV), with small amplitudes of $\sim0.7$ mag and $0.4$ mag for the host subtracted- and included-light curves, respectively. The power-enhanced F-test and the nested Analysis of Variance (ANOVA) statistical tests of the six intra-day light curves show that the blazar has no minute-scale variability. The multiband color behavior analysis revealed a moderate redder-when-brighter (RWB) trend on intra-day time scales, while the LTV shows no detectable color behavior. We found a strong correlation between the ZTF optical light curves without any time lag, but no detectable correlations for the optical band emissions. From our periodicity searches using WWZ and LS methods, three significant quasi-periodic oscillation (QPO) signals in the ZTF light curves are found at about 1.02, 1.3, and 2.85 years. The observational results indicate that the blazar 1ES 2344+514 has a complex variability while emphasizing the need for future observations to unravel its underlying mechanisms.https://dergipark.org.tr/en/download/article-file/3926700galaxies generalgalaxies activebl lacertae objects generalbl lacertae objects individua 1es 2344+514 |
| spellingShingle | Aykut Özdönmez Multi-Band Optical Variability of Blazar 1ES 2344+514 on Diverse Time-Scales Journal of Advanced Research in Natural and Applied Sciences galaxies general galaxies active bl lacertae objects general bl lacertae objects individua 1es 2344+514 |
| title | Multi-Band Optical Variability of Blazar 1ES 2344+514 on Diverse Time-Scales |
| title_full | Multi-Band Optical Variability of Blazar 1ES 2344+514 on Diverse Time-Scales |
| title_fullStr | Multi-Band Optical Variability of Blazar 1ES 2344+514 on Diverse Time-Scales |
| title_full_unstemmed | Multi-Band Optical Variability of Blazar 1ES 2344+514 on Diverse Time-Scales |
| title_short | Multi-Band Optical Variability of Blazar 1ES 2344+514 on Diverse Time-Scales |
| title_sort | multi band optical variability of blazar 1es 2344 514 on diverse time scales |
| topic | galaxies general galaxies active bl lacertae objects general bl lacertae objects individua 1es 2344+514 |
| url | https://dergipark.org.tr/en/download/article-file/3926700 |
| work_keys_str_mv | AT aykutozdonmez multibandopticalvariabilityofblazar1es2344514ondiversetimescales |