The broad-lined type Ic supernova 2020lao experienced an energetic explosion with no central-engine signatures

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Table 1.

Discovery information.

Detection information	JD	Δt_exp^a	Magnitude ^b
ZTF r non-detection	2458992.81	−0.80	> 20.0
ZTF g non-detection	2458992.83	−0.78	> 20.2
ATLAS o non-detection	2458993.99	−0.34	> 20.5
TESS Explosion (t_exp), Vallely et al. (2021)	2458994.63 ± 0.06	+0.96	⋯
ZTF t_exp, Anand et al. (2024)	2458993.57 ± 0.75	−0.07	⋯

Revised TESS t_exp, this paper	$2458993 . 64_{- 0.20}^{+ 0.23}$ $Mathematical equation: $ 2458993.64^{+0.23}_{-0.20} $$	0.0	⋯
Revised ZTF t_exp, this paper	$2458993 . 83_{- 0.50}^{+ 0.45}$ $Mathematical equation: $ 2458993.83^{+0.45}_{-0.50} $$	+0.18	⋯
ZTF r recovered detection; this paper	2458994.81	+1.13	19.90 ± 0.22
ZTF/ALeRCE g first detection	2458994.91	+1.23	19.74 ± 0.12

Notes.

Rest-frame days relative to our revised TESS t_exp value.

Limiting ZTF magnitudes were computed by the ZTF forced photometry code including the appropriate baseline corrections and adopting a minimum signal-to-noise ratio of 3. ATLAS limiting magnitude as computed by The ATLAS project’s forced photometry service.

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