Multi-Band Optical Variability of Blazar 1ES 2344+514 on Diverse Time-Scales

Aykut Özdönmez

Makale detayları

Multi-Band Optical Variability of Blazar 1ES 2344+514 on Diverse Time-Scales

Yazarlar:

Aykut Özdönmez

Yayıncı:

Çanakkale Onsekiz Mart University

Ana Başlıklar:

Cosmology and Extragalactic Astronomy | Astronomical Sciences (Other)

Dergi:

Journal of Advanced Research in Natural and Applied Sciences Vol.10 Issue 3, pp.684-701

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001328951

pISSN:

2757-5195

Anahtar kelimeler:

Özet:

 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 2344514 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 2344514 has a complex variability while emphasizing the need for future observations to unravel its underlying mechanisms.

 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 2344514 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 2344514 has a complex variability while emphasizing the need for future observations to unravel its underlying mechanisms.

 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 2344514 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 2344514 has a complex variability while emphasizing the need for future observations to unravel its underlying mechanisms.

 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 2344514 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 2344514 has a complex variability while emphasizing the need for future observations to unravel its underlying mechanisms.

Makale detayları

Multi-Band Optical Variability of Blazar 1ES 2344+514 on Diverse Time-Scales

Yazarlar:

Aykut Özdönmez

Yayıncı:

Çanakkale Onsekiz Mart University

Ana Başlıklar:

Cosmology and Extragalactic Astronomy | Astronomical Sciences (Other)

Dergi:

Journal of Advanced Research in Natural and Applied Sciences Vol.10 Issue 3, pp.684-701

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001328951

pISSN:

2757-5195

Galaxies general

galaxies active

bl lacertae objects general

bl lacertae objects individua 1ES 2344+514

Sayı

Makale detayları

Multi-Band Optical Variability of Blazar 1ES 2344+514 on Diverse Time-Scales

Yazarlar: Aykut Özdönmez

Yayıncı: Çanakkale Onsekiz Mart University

Ana Başlıklar: Cosmology and Extragalactic Astronomy | Astronomical Sciences (Other)

Dergi: Journal of Advanced Research in Natural and Applied Sciences Vol.10 Issue 3, pp.684-701

Belge Tipi: Makale

Yayın Tarihi: 9/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001328951

pISSN: 2757-5195

Galaxies general

galaxies active

bl lacertae objects general

bl lacertae objects individua 1ES 2344+514

Sayı

Yazarlar:

Aykut Özdönmez

Yayıncı:

Çanakkale Onsekiz Mart University

Ana Başlıklar:

Cosmology and Extragalactic Astronomy | Astronomical Sciences (Other)

Dergi:

Journal of Advanced Research in Natural and Applied Sciences Vol.10 Issue 3, pp.684-701

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001328951

pISSN:

2757-5195