Transmission spectroscopy of WASP-52 b with JWST NIRISS: water and helium atmospheric absorption, alongside prominent star-spot crossings. - Fournier-Tondreau, Marylou; Pan, Yanbo; Morel, Kim; Lafrenière, David; MacDonald, Ryan J; Coulombe, Louis-Philippe; Allart, Romain; Albert, Loïc; Radica, Michael; Piaulet-Ghorayeb, Caroline; Roy, Pierre-Alexis; Pelletier, Stefan; et al. (Monthly Notices of the Royal Astronomical Society, 2025)