Early-time Light Curves of Type Ia Supernovae Observed with TESS

We present early time light curves of Type Ia supernovae observed in the first six sectors TESS data. Ten these were discovered by ASAS-SN, seven ATLAS, ZTF, and one \textit{Gaia}. For nine SNe with sufficient dynamic range ($>$3.0 mag from detection to peak), we fit power law models search for signatures companion stars. find a diversity curve shapes, although most our sources are consistent fireball where flux increases $\propto t^2$. Three SN display flatter rise t$. do not any evidence additional structure such as multiple components rising curves. assumptions about properties observer viewing angle, further assuming that stars would be Roche-lobe overflow, place limits on radii companions complete coverage The upper $\lesssim$\,32 R$_\odot$ supernovae, $\lesssim$\,20 five six, $\lesssim$\,4 two six. small sample size does constrain occurrence rates single degenerate progenitors, but expect enough its primary mission (26 sectors) inform this measurement. also show is capable detecting emission 1 \rsun\ within 50 Mpc, may so after years.