The Radio luminosity-risetime function of core-collapse supernovae

M. F. Bietenholz, N. Bartel, M. Argo, R. Dua, S. Ryder, A. Soderberg

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    40 Citations (Scopus)

    Abstract

    We assemble a large set of 2-10 GHz radio flux density measurements and upper limits of 294 different supernovae (SNe), from the literature and our own and archival data. Only 31% of SNe were detected. We characterize the SN radio lightcurves near the peak using a two-parameter model, with tpk being the time to rise to a peak and Lpk the spectral luminosity at that peak. Over all SNe in our sample at D < 100 Mpc, we find that tpk = 101.7±0.9 days and that Lpk = 1025.5±1.6 erg s-1 Hz-1, and therefore that generally 50% of SNe will have Lpk < 1025.5 erg s-1 Hz-1. These Lpk values are ∼30 times lower than those for only detected SNe. Types Ib/c and II (excluding IIn's) have similar mean values of Lpk but the former have a wider range, whereas Type IIn SNe have ∼10 times higher values with Lpk = 1026.5±1.1 erg s-1 Hz-1. As for tpk, Type Ib/c have tpk of only 101.1±0.5 days while Type II have tpk = 101.6±1.0 and Type IIn the longest timescales with tpk = 103.1±0.7 days. We also estimate the distribution of progenitor mass-loss rates,, and find that the mean and standard deviation of log10(/[Myr-1]) are -5.4 ± 1.2 (assuming vwind = 1000 km s-1) for Type Ib/c SNe, and -6.9 ± 1.4 (assuming vwind = 10 km s-1) for Type II SNe excluding Type IIn.

    Original languageEnglish
    Article number75
    Pages (from-to)1-24
    Number of pages24
    JournalAstrophysical Journal
    Volume908
    Issue number1
    DOIs
    Publication statusPublished - 15 Feb 2021

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