He I (2³S) triplet absorption profiles obtained considering different values of the planetary magnetic field at a fixed He/H abundance ratio of 0.01 in comparison with the observations (black asterisks). The blue, red, and green lines are for a stellar XUV flux at 1 AU of 7.5 erg cm⁻² s⁻¹ and a planet with a magnetic field strength of 0.01, 0.5, and 1.0 G, respectively (i.e. model runs N1, N2, N3). The grey line is for a planet with a magnetic field of 1.0 G and a strong stellar wind (i.e. model run N4). The absorption profiles are the result of time averaging from −0.1 to +0.1 in planetary orbital phase. The zero Doppler-shifted velocity on the x axis corresponds to a wavelength of 10 830.25 Å. The horizontal dashed line marks the 2σ upper limit derived from the observations (Fossati et al. 2022). The horizontal dotted line at 1.00 is for reference.