Open Access
Table B.1.
Results of IDV analyses of the TeV blazar S4 0954+65. The values of variability amplitude, Δmag, and τvar are only mentioned for the variable light curves. For non-variable light curves, we put a ’-’. Also, when τvar < σ (τvar) we use a ’-’ for τvar. A * denotes that the detected variability timescale is greater than the duration of the light curve.
| Observation date | Start MJD | Band | DoF | Fenh | Fc | Status | Amplitude | Δ mag | τvar |
|---|---|---|---|---|---|---|---|---|---|
| dd-mm-yyyy | ν1,ν2 | (%) | (in min) | ||||||
| 22-03-2017 | 57834.83372 | V | 26, 52 | 0.71 | 2.14 | NV | - | - | - |
| 57834.83524 | R | 25, 50 | 0.98 | 2.17 | NV | - | - | - | |
| 57834.83671 | I | 26, 52 | 0.55 | 2.14 | NV | - | - | - | |
| 25-03-2017 | 57837.81406 | V | 26, 52 | 5.24 | 2.14 | V | 56.5±11.4 | 0.58±0.11 | 18.21±4.87 |
| 57837.81553 | R | 26, 52 | 3.06 | 2.14 | V | 32.3±8.3 | 0.33±0.08 | - | |
| 57837.81700 | I | 26, 52 | 3.04 | 2.14 | V | 35.4±8.4 | 0.36±0.08 | - | |
| 28-03-2017 | 57840.76318 | V | 25, 50 | 0.12 | 2.17 | NV | - | - | - |
| 57840.76471 | R | 25, 50 | 0.07 | 2.17 | NV | - | - | - | |
| 57840.76618 | I | 25, 50 | 0.14 | 2.17 | NV | - | - | - | |
| 09-02-2018 | 58158.92130 | V | 29, 58 | 0.43 | 2.05 | NV | - | - | - |
| 58158.92277 | R | 29, 58 | 0.20 | 2.05 | NV | - | - | - | |
| 58158.92422 | I | 29, 58 | 0.38 | 2.05 | NV | - | - | - | |
| 16-02-2018 | 58165.87456 | V | 11, 22 | 0.41 | 3.18 | NV | - | - | - |
| 58165.87608 | R | 10, 20 | 0.57 | 3.37 | NV | - | - | - | |
| 58165.87753 | I | 10, 20 | 0.71 | 3.37 | NV | - | - | - | |
| 18-04-2018 | 58226.76861 | V | 27, 54 | 4.36 | 2.11 | V | 29.1±3.5 | 0.29±0.03 | - |
| 58226.76421 | R | 29, 58 | 2.33 | 2.05 | V | 28.5±2.5 | 0.29±0.03 | - | |
| 58226.76567 | I | 27, 54 | 2.85 | 2.11 | V | 28.2±2.4 | 0.28±0.02 | 114.81±32.51 | |
| 19-04-2018 | 58227.77932 | V | 33, 66 | 2.48 | 1.96 | V | 16.9±3.3 | 0.17±0.03 | 64.21±19.44 |
| 58227.78079 | R | 33, 66 | 4.28 | 1.96 | V | 19.1±2.5 | 0.19±0.02 | 104.77±33.64 | |
| 58227.78225 | I | 33, 66 | 2.35 | 1.96 | V | 14.8±2.3 | 0.15±0.02 | - | |
| 21-04-2018 | 58229.77088 | V | 28, 56 | 2.11 | 2.08 | V | 28.8±3.7 | 0.29±0.04 | - |
| 58229.77234 | R | 29, 58 | 2.14 | 2.05 | V | 24.3±2.4 | 0.24±0.02 | 137.57±39.77 | |
| 58229.77380 | I | 29, 58 | 1.84 | 2.05 | NV | - | - | - | |
| 08-05-2018 | 58246.78161 | V | 29, 58 | 0.27 | 2.05 | NV | - | - | - |
| 58246.78308 | R | 29, 58 | 0.08 | 2.05 | NV | - | - | - | |
| 58246.79042 | I | 28, 56 | 0.08 | 2.08 | NV | - | - | - | |
| 11-05-2018 | 58249.79575 | V | 19, 38 | 1.24 | 2.42 | NV | - | - | - |
| 58249.78250 | R | 21, 42 | 0.60 | 2.32 | NV | - | - | - | |
| 58249.78396 | I | 22, 44 | 0.66 | 2.28 | NV | - | - | - | |
| 01-02-2019 | 58515.11557 | V | 11, 22 | 0.69 | 3.18 | NV | - | - | - |
| 58515.11704 | R | 11, 22 | 0.92 | 3.18 | NV | - | - | - | |
| 58515.11850 | I | 11, 22 | 1.99 | 3.18 | NV | - | - | - | |
| 27-02-2019 | 58541.99293 | V | 16, 32 | 0.55 | 2.62 | NV | - | - | - |
| 58541.99440 | R | 16, 32 | 0.39 | 2.62 | NV | - | - | - | |
| 58541.99586 | I | 16, 32 | 1.47 | 2.62 | NV | - | - | - | |
| 28-02-2019 | 58542.98566 | V | 24, 48 | 0.55 | 2.20 | NV | - | - | - |
| 58542.98712 | R | 24, 48 | 0.75 | 2.20 | NV | - | - | - | |
| 58542.98858 | I | 22, 44 | 0.37 | 2.28 | NV | - | - | - | |
| 28-03-2019 | 58570.96037 | V | 19, 38 | 1.76 | 2.42 | NV | - | - | - |
| 58570.96189 | R | 18, 36 | 2.38 | 2.48 | NV | - | - | - | |
| 58570.96334 | I | 19, 38 | 2.84 | 2.42 | V | 9.7±3.2 | 0.10±0.03 | - | |
| 24-02-2020 | 58903.84796 | V | 43, 86 | 0.71 | 1.81 | NV | - | - | - |
| 58903.84943 | R | 45, 90 | 0.73 | 1.79 | NV | - | - | - | |
| 58903.85681 | I | 41, 82 | 0.70 | 1.84 | NV | - | - | - | |
| 25-02-2020 | 58904.92771 | V | 31, 62 | 0.97 | 2.01 | NV | - | - | - |
| 58904.92918 | R | 31, 62 | 0.82 | 2.01 | NV | - | - | - | |
| 58904.93065 | I | 31, 62 | 0.38 | 2.01 | NV | - | - | - | |
| 26-02-2020 | 58905.84214 | V | 22, 44 | 1.53 | 2.28 | NV | - | - | - |
| 58905.84361 | R | 22, 44 | 1.04 | 2.28 | NV | - | - | - | |
| 58905.84508 | I | 23, 46 | 3.04 | 2.24 | V | 21.8±3.4 | 0.22±0.03 | - | |
| 27-02-2020 | 58906.87792 | V | 26, 52 | 0.54 | 2.14 | NV | - | - | - |
| 58906.87939 | R | 26, 52 | 0.46 | 2.14 | NV | - | - | - | |
| 58906.88117 | I | 26, 52 | 0.49 | 2.14 | NV | - | - | - | |
| 22-04-2020 | 58961.80124 | V | 39, 78 | 2.56 | 1.86 | V | 10.2±3.9 | 0.11±0.04 | - |
| 58961.80271 | R | 37, 74 | 3.52 | 1.89 | V | 11.4±2.3 | 0.12±0.02 | - | |
| 58961.80418 | I | 37, 74 | 3.27 | 1.89 | V | 11.2±3.7 | 0.12±0.04 | - | |
| 23-04-2020 | 58962.78927 | V | 55,110 | 0.52 | 1.69 | NV | - | - | - |
| 58962.79074 | R | 56,112 | 0.90 | 1.68 | NV | - | - | - | |
| 58962.79221 | I | 55,110 | 0.64 | 1.69 | NV | - | - | - | |
| 24-04-2020 | 58963.79951 | V | 41, 82 | 1.02 | 1.84 | NV | - | - | - |
| 58963.80098 | R | 41, 82 | 0.93 | 1.84 | NV | - | - | - | |
| 58963.80247 | I | 40, 80 | 0.69 | 1.85 | NV | - | - | - | |
| 25-04-2020 | 58964.81051 | V | 9, 18 | 1.10 | 3.60 | NV | - | - | - |
| 27-04-2020 | 58966.79419 | V | 25, 50 | 0.27 | 2.17 | NV | - | - | - |
| 58966.79566 | R | 24, 48 | 0.23 | 2.20 | NV | - | - | - | |
| 58966.79713 | I | 25, 50 | 0.28 | 2.17 | NV | - | - | - | |
| 30-04-2020 | 58969.77789 | V | 52,104 | 0.32 | 1.72 | NV | - | - | - |
| 58969.77936 | R | 50,100 | 0.38 | 1.74 | NV | - | - | - | |
| 58969.78083 | I | 48, 96 | 0.30 | 1.75 | NV | - | - | - | |
| 23-05-2020 | 58992.83843 | V | 18, 36 | 0.96 | 2.48 | NV | - | - | - |
| 58992.83990 | R | 18, 36 | 0.67 | 2.48 | NV | - | - | - | |
| 58992.84137 | I | 18, 36 | 0.66 | 2.48 | NV | - | - | - | |
| 24-05-2020 | 58993.88975 | V | 13, 26 | 1.18 | 2.90 | NV | - | - | - |
| 58993.89123 | R | 13, 26 | 1.70 | 2.90 | NV | - | - | - | |
| 58993.89270 | I | 13, 26 | 1.16 | 2.90 | NV | - | - | - | |
| 07-03-2021 | 59280.87602 | V | 25, 50 | 2.43 | 2.17 | V | 13.4±4.8 | 0.14±0.05 | - |
| 59280.87749 | R | 25, 50 | 4.13 | 2.17 | V | 15.3±3.5 | 0.16±0.03 | - | |
| 59280.87896 | I | 25, 50 | 16.67 | 2.17 | V | 20.8±4.0 | 0.21±0.04 | - | |
| 08-03-2021 | 59281.86245 | V | 36, 72 | 5.61 | 1.91 | V | 29.4±3.8 | 0.30±0.04 | - |
| 59281.86392 | R | 36, 72 | 6.28 | 1.91 | V | 26.5±2.3 | 0.27±0.02 | - | |
| 59281.86539 | I | 36, 72 | 18.07 | 1.91 | V | 26.8±2.8 | 0.27±0.03 | - | |
| 13-03-2021 | 59286.77670 | V | 33, 66 | 4.31 | 1.96 | V | 13.5±4.1 | 0.14±0.04 | - |
| 59286.77817 | R | 33, 66 | 3.34 | 1.96 | V | 10.2±3.3 | 0.11±0.03 | - | |
| 59286.77964 | I | 33, 66 | 1.99 | 1.96 | V | 9.0±2.7 | 0.09±0.03 | - | |
| 14-03-2022 | 59652.94300 | V | 18, 36 | 0.45 | 2.48 | NV | - | - | - |
| 59652.94500 | R | 18, 36 | 0.47 | 2.48 | NV | - | - | - | |
| 59652.94600 | I | 18, 36 | 0.51 | 2.48 | NV | - | - | - | |
| 11-04-2022 | 59680.76247 | B | 9, 18 | 26.71 | 3.60 | V | 55.4±16.1 | 0.57±0.16 | - |
| 59680.76539 | V | 53,106 | 31.53 | 1.71 | V | 47.9±4.5 | 0.48±0.04 | - | |
| 59680.76831 | R | 52,104 | 28.16 | 1.72 | V | 40.9±1.5 | 0.41±0.01 | - | |
| 59680.77124 | I | 53,106 | 26.83 | 1.71 | V | 39.5±1.9 | 0.40±0.02 | 106.98±30.28 | |
| 12-04-2022 | 59681.75519 | V | 52,104 | 6.46 | 1.72 | V | 31.9±4.9 | 0.32±0.05 | - |
| 59681.75666 | R | 52,104 | 5.96 | 1.72 | V | 29.7±3.1 | 0.30±0.03 | - | |
| 59681.75814 | I | 52,104 | 3.56 | 1.72 | V | 29.2±3.3 | 0.29±0.03 | - | |
| 13-04-2022 | 59682.75987 | V | 47, 94 | 18.17 | 1.76 | V | 54.3±4.3 | 0.54±0.04 | - |
| 59682.76134 | R | 47, 94 | 16.99 | 1.76 | V | 50.6±3.2 | 0.51±0.03 | - | |
| 59682.76281 | I | 47, 94 | 11.38 | 1.76 | V | 45.6±3.1 | 0.46±0.03 | - | |
| 14-04-2022 | 59683.75852 | V | 23, 46 | 3.23 | 2.24 | V | 20.1±15.8 | 0.22±0.14 | - |
| 59683.75999 | R | 23, 46 | 3.41 | 2.24 | V | 27.3±8.9 | 0.28±0.09 | - | |
| 59683.76147 | I | 24, 48 | 3.63 | 2.20 | V | 23.2±4.5 | 0.24±0.04 | - | |
| 15-04-2022 | 59684.80767 | V | 28, 56 | 5.41 | 2.08 | V | 23.2±4.1 | 0.24±0.04 | - |
| 59684.80469 | R | 29, 58 | 8.74 | 2.05 | V | 22.9±2.6 | 0.23±0.03 | 96.92±28.58 | |
| 59684.78242 | I | 30, 60 | 4.10 | 2.03 | V | 25.7±4.8 | 0.26±0.05 | - | |
| 02-06-2022 | 59732.82031 | V | 34, 68 | 1.57 | 1.95 | NV | - | - | - |
| 59732.82190 | R | 35, 70 | 2.06 | 1.93 | V | 39.9±4.8 | 0.40±0.05 | - | |
| 59732.82337 | I | 35, 70 | 1.64 | 1.93 | NV | - | - | - | |
| 03-06-2022 | 59733.80929 | V | 36, 72 | 0.59 | 1.91 | NV | - | - | - |
| 59733.81088 | R | 33, 66 | 2.24 | 1.96 | V | 31.5±12.3 | 0.32±0.12 | - | |
| 59733.81236 | I | 33, 66 | 1.19 | 1.96 | NV | - | - | - | |
| 04-06-2022 | 59734.83396 | V | 30, 60 | 1.97 | 2.03 | NV | - | - | - |
| 59734.83554 | R | 32, 64 | 1.99 | 1.98 | V | 39.7±5.5 | 0.40±0.06 | - | |
| 59734.83701 | I | 32, 64 | 1.22 | 1.98 | NV | - | - | - | |
| 18-06-2022 | 59748.85271 | V | 12, 24 | 0.85 | 3.03 | NV | - | - | - |
| 59748.85429 | R | 11, 22 | 0.24 | 3.18 | NV | - | - | - | |
| 59748.85578 | I | 12, 24 | 0.87 | 3.03 | NV | - | - | - | |
| 29-10-2022 | 59881.99244 | B | 105,210 | 16.94 | 1.47 | V | 16.4±1.5 | 0.17±0.01 | - |
| 59881.99213 | R | 202,404 | 23.79 | 1.32 | V | 10.2±0.5 | 0.10±0.01 | 80.06±23.16 | |
| 31-10-2022 | 59883.00814 | B | 67,134 | 7.58 | 1.61 | V | 7.6±0.5 | 0.08±0.01 | - |
| 59883.00758 | R | 240,480 | 2.20 | 1.29 | V | 5.7±0.4 | 0.06±0.01 | 35.64±8.40 | |
| 15-02-2023 | 59990.88028 | V | 11, 22 | 0.32 | 3.18 | NV | - | - | - |
| 59990.88186 | R | 11, 22 | 1.05 | 3.18 | NV | - | - | - | |
| 59990.88333 | I | 11, 22 | 0.39 | 3.18 | NV | - | - | - | |
| 22-03-2023 | 60025.92133 | V | 13, 26 | 0.39 | 2.90 | NV | - | - | - |
| 60025.92280 | R | 15, 30 | 1.10 | 2.70 | NV | - | - | - | |
| 60025.92428 | I | 14, 28 | 0.52 | 2.79 | NV | - | - | - | |
| 23-03-2023 | 60026.80009 | V | 15, 30 | 12.67 | 2.70 | V | 37.2±2.4 | 0.37±0.02 | - |
| 60026.80156 | R | 17, 34 | 15.50 | 2.54 | V | 37.6±1.4 | 0.38±0.01 | - | |
| 60026.80303 | I | 17, 34 | 9.32 | 2.54 | V | 35.7±1.5 | 0.36±0.02 | - | |
| 24-03-2023 | 60027.81407 | V | 21, 42 | 10.64 | 2.32 | V | 13.8±2.0 | 0.14±0.02 | - |
| 60027.81554 | R | 21, 42 | 10.90 | 2.32 | V | 13.4±1.0 | 0.13±0.01 | 584.21±184.13* | |
| 60027.81701 | I | 21, 42 | 6.93 | 2.32 | V | 12.5±1.3 | 0.13±0.01 | - | |
| 27-04-2023 | 60061.79841 | V | 15, 30 | 2.97 | 2.70 | V | 8.6±3.1 | 0.09±0.03 | - |
| 60061.80000 | R | 14, 28 | 3.08 | 2.79 | V | 9.6±1.5 | 0.10±0.01 | 502.01±128.20* | |
| 60061.80147 | I | 14, 28 | 1.49 | 2.79 | NV | - | - | - | |
| 28-04-2023 | 60062.80072 | V | 11, 22 | 26.71 | 3.18 | V | 29.1±2.8 | 0.29±0.03 | 171.61±50.30* |
| 60062.80230 | R | 11, 22 | 21.66 | 3.18 | V | 28.9±1.5 | 0.29±0.01 | 263.09±37.43* | |
| 60062.80377 | I | 11, 22 | 11.64 | 3.18 | V | 28.9±1.9 | 0.29±0.02 | - |
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