Speaker
Description
In the coming years, surveys such as Rubin Observatory Legacy Survey of Space and Time (LSST) are expected to increase the number of observed tidal disruption events (TDEs) substantially. This analysis is a followup to Szekerczes, et al. (2024). We similarly employ Monte Carlo integration to calculate the TDE rate as a function of limiting magnitude. We investigate multiple black hole mass functions (BHMFs) and TDE luminosity models. The predictions of the unlensed TDE rate range from $1.6$ to $5 \; 440 \; \mathrm{yr}^{-1} \; 20 \, 000 \; \mathrm{deg}^{-2}$ for the Zwicky Transient Facility, only matching the observed rate at the low end. An overestimation is expected, as we do not consider observational effects such as dust extinction or host galaxy light. However, our analysis still reveals that the redshift evolution of the BHMF is not a significant factor, even for LSST. The predicted lensed rates display a similarly large scatter, ranging from $0.008$ to $15 \; \mathrm{yr}^{-1} \; 20 \, 000 \; \mathrm{deg}^{-2}$ for LSST. This scatter does reduce, when we consider the fraction of lensed TDEs, allowing us to estimate that approximately one in ten thousand TDEs will be lensed.
| Abstract title | Rate of unlensed and lensed TDEs |
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