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We present supernova rate measurements at redshift 0.1-1.0 from the StockholmVIMOS Supernova Survey (SVISS). The sample contains 16 supernovae in total. Thediscovered supernovae have been classified as core collapse or type Iasupernovae (9 and 7, respectively) based on their light curves, colourevolution and host galaxy photometric redshift. The rates we find for the corecollapse supernovae are 3.29 (-1.78,-1.45)(+3.08,+1.98) x 10^-4 yr^-1 Mpc^-3h70^3 (with statistical and systematic errors respectively) at average redshift0.39 and 6.40 (-3.12,-2.11)(+5.30,+3.65) x 10^-4 yr^-1 Mpc^-3 h70^3 at averageredshift 0.73. For the type Ia supernovae we find a rate of 1.29(-0.57,-0.28)(+0.88,+0.27) x 10^-4 yr^-1 Mpc^-3 h70^3 at average redshift 0.62.All of these rate estimates have been corrected for host galaxy extinction,using a method that includes supernovae missed in infrared bright galaxies athigh redshift. We use Monte Carlo simulations to make a thorough study of thesystematic effects from assumptions made when calculating the rates and findthat the most important errors come from misclassification, the assumed mix offaint and bright supernova types and uncertainties in the extinctioncorrection. We compare our rates to other observations and to the predictedrates for core collapse and type Ia supernovae based on the star formationhistory and different models of the delay time distribution. Overall, ourmeasurements, when taking the effects of extinction into account, agree quitewell with the predictions and earlier results. Our results highlight theimportance of understanding the role of systematic effects, and dust extinctionin particular, when trying to estimate the rates of supernovae at moderate tohigh redshift.

The Rate of Supernovae at Redshift 0.1-1.0 - the Stockholm VIMOS Supernova Survey IV