P/2019 LM $_4$（Palomar）的复发性爆发
Recurring Outbursts of P/2019 LM$_4$ (Palomar)
摘要：
我们提出了对P/2019 LM $_4$（Palomar）彗星的初步分析，该彗星由Zwicky瞬态设施（ZTF）在2019年和2020年观测到。我们发现，2019年彗星的发现和2020年的恢复在很大程度上归因于两次独立的爆发，强度分别为$\gtrsim2$和$\gtrsim3.9$。爆发分别发生在2019年4月底至5月初以及2020年5月8.31和9.52 UTC之间。
英文摘要：
We present a preliminary analysis of comet P/2019 LM$_4$ (Palomar) as observed by the Zwicky Transient Facility (ZTF) survey in 2019 and 2020. We find that the discovery of the comet in 2019 and the recovery in 2020 is largely attributed to two separate outbursts that are $\gtrsim2$ and $\gtrsim3.9$ mag in strength. The outbursts occurred around the end of April to early May of 2019 as well as between 2020 May 8.31 and 9.52 UTC, respectively.
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