演講資訊

摘要：

Cometary outbursts are short-lived mass-loss events produced by a comet’s nucleus. Identifying the causes of cometary outbursts can lead us to insights into the processes occurring on and within cometary nuclei. However, a major challenge to the study of cometary outbursts is the paucity of statistically relevant studies. Events releasing 10^8 kg or more of material are readily found, but perhaps only a few occur each year (Ishiguro et al. 2016, AJ 152, 169). Smaller events are more frequent, but less likely to be discovered. In this talk, I will summarize the results of the cometary outbursts obtained both from space mission and ground-based telescopes (Lulin observatory and other facilities) for those relatively large events. For the smaller ones led by Mike Kelley, we will introduce the searching program using the Zwicky Transient Facility (ZTF). From the start of the survey in March 2018 up to October 2023, and predicted to be brighter than V=23 mag. Over 100 outbursts of 70 comets (excluding 29P/Schwassmann-Wachmann 1) have been identified by inspection of their lightcurves and morphologies. We summarize the properties of these outbursts, and the comets that produced them.