  Spin pumping by ferromagnetic resonance is one of the most common technique
to determine spin hall angles, Edelstein lengths or spin diffusion lengths of a
large variety of materials. In recent years, rising concerns have appeared
regarding the interpretation of these experiments, underlining that the signal
could arise purely from thermoelectric effects, rather than from coherent spin
pumping. Here, we propose a method to evaluate the presence or absence of
thermal effects in spin pumping signals, by combining bolometry and spin
pumping by ferromagnetic resonance measurements, and comparing their timescale.
Using a cavity to perform the experiments on Pt\Permalloy and La0.7Sr0.3MnO3\Pt
samples, we conclude on the absence of any measurable thermoelectric
contribution such as the spin Seebeck and anomalous Nernst effects at resonance
