Table 2.
Flux and polarisation values of Mrk 421 during the epochs studied in this work.
| Epoch | Date | γ-ray | TS | Radio | V-band |
R-band | Soft | Hard | UV | Hard/Soft | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (flux) | (mJy) | (mag) | pol. (%) | (mag) | (ph s−1) | (ph s−1) | (ph s−1) | ||||
| A | 03 Jan. 2017 | 3.4 | 97 | 0.46 ± 0.02 | 13.67 ± 0.03 | 2.98 ± 0.06 | 13.32 ± 0.03 | 26.68 ± 0.26 | 6.42 ± 0.07 | – | 0.24 |
| B | 31 Jan. 2017 | 2.1 | 29 | 0.50 ± 0.01 | 13.61 ± 0.02 | 1.31 ± 0.06 | 13.26 ± 0.02 | 26.73 ± 1.78 | 6.46 ± 0.77 | 7.05 ± 0.11 | 0.24 |
| C | 28 Feb. 2017 | 6.9 | 19 | 0.49 ± 0.01 | 13.55 ± 0.02 (a) | 2.52 ± 0.06 (a) | 13.19 ± 0.03 | 25.48 ± 0.85 | 6.46 ± 0.42 | – | 0.25 |
| D | 27 Mar. 2017 | 2.7 | 11 | 0.48 ± 0.01 | 13.42 ± 0.02 (b) | 1.43 ± 0.05 (b) | 13.09 ± 0.02 | 13.27 ± 0.44 | 1.88 ± 0.26 | 8.71 ± 0.21 | 0.14 |
Notes. The γ-ray fluxes are in units of 10−7 ph cm−2 s−1. The optical flux and polarisation measurements during (a) and (b) belong to 27 February 2017 and 28 March 2017. The columnc ‘Soft’ and ‘Hard’ list the Swift/XRT 0.3–2 keV and 2–10 keV band fluxes.
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