THE RESULTS OF SIMULTANEOUS TESS AND MULTIBAND PHOTOMETRIC OBSERVATIONS OF BL LAC DURING A HIGH ACTIVITY
Section: HIGH ENERGY ASTROPHYSICS
Authors:
1.
Crimean Astrophysical Observatory of the Russian Academy of Sciences
2.
Crimean Astrophysical Observatory of the Russian Academy of Sciences
3.
Crimean Astrophysical Observatory of the Russian Academy of Sciences
4.
Crimean Astrophysical Observatory of the Russian Academy of Sciences
Type:
Сonference article
Published:
27.12.2024
Subject area:
UDC 52
UDC 53
UDC 520
UDC 521
UDC 523
UDC 524
UDC 52-1
UDC 52-6
CSCSTI 41.00
CSCSTI 29.35
CSCSTI 29.31
CSCSTI 29.33
CSCSTI 29.27
CSCSTI 29.05
Russian Classification of Professions by Education 03.06.01
Russian Classification of Professions by Education 03.05.01
Russian Classification of Professions by Education 03.04.03
Russian Library and Bibliographic Classification 2
Russian Library and Bibliographic Classification 223
Russian Trade and Bibliographic Classification 614
Russian Trade and Bibliographic Classification 6135
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
UDC 53
UDC 520
UDC 521
UDC 523
UDC 524
UDC 52-1
UDC 52-6
CSCSTI 41.00
CSCSTI 29.35
CSCSTI 29.31
CSCSTI 29.33
CSCSTI 29.27
CSCSTI 29.05
Russian Classification of Professions by Education 03.06.01
Russian Classification of Professions by Education 03.05.01
Russian Classification of Professions by Education 03.04.03
Russian Library and Bibliographic Classification 2
Russian Library and Bibliographic Classification 223
Russian Trade and Bibliographic Classification 614
Russian Trade and Bibliographic Classification 6135
BISAC SCI004000 Astronomy
BISAC SCI005000 Physics / Astrophysics
Language:
English
Keywords:
radiation mechanisms: non-thermal; relativistic processes; techniques: photometric; BL Lacertae objects: individual (BL Lac); galaxies: jets
Funding:
this work is partly supported by the Russian Science Foundation, No. 24-22-00343
Abstract (English):
For the blazar BL Lac, we analyze data from TESS and multiband observations that were obtained using the MTM-500 telescope of the Crimean Astrophysical Observatory from 1.09.2022 to 30.09.2022. During this period, BL Lac showed strong variability, both accompanied and unaccompanied by changes in spectral index. The shortest characteristic variability times are mainly in the range from 0.2 to 1 day and do not depend on the object brightness, the spectral index, and the average amplitude of the variability within the corresponding intervals of the light curve. It indicates that the mechanisms of short-term variability are characterized by two or more independent parameters.
For the blazar BL Lac, we analyze data from TESS and multiband observations that were obtained using the MTM-500 telescope of the Crimean Astrophysical Observatory from 1.09.2022 to 30.09.2022. During this period, BL Lac showed strong variability, both accompanied and unaccompanied by changes in spectral index. The shortest characteristic variability times are mainly in the range from 0.2 to 1 day and do not depend on the object brightness, the spectral index, and the average amplitude of the variability within the corresponding intervals of the light curve. It indicates that the mechanisms of short-term variability are characterized by two or more independent parameters.
Keywords:
radiation mechanisms: non-thermal; relativistic processes; techniques: photometric; BL Lacertae objects: individual (BL Lac); galaxies: jets
radiation mechanisms: non-thermal; relativistic processes; techniques: photometric; BL Lacertae objects: individual (BL Lac); galaxies: jets
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