K2：背景调查-在Kepler/K2数据中寻找未发现的瞬变
K2: Background Survey -- the search for undiscovered transients in Kepler/K2 data
摘要：
开普勒太空望远镜的K2任务提供了一个独特的可能性，以高节奏测光检查银河系和银河系外起源的来源。除了在目标星系中探测到的大量超新星和类星体外，开普勒很可能还意外地在整个K2中观测到了许多瞬变现象。这些事件可能发生在背景像素中，恰好围绕着科学目标。分析背景像素提供了进行高节奏调查的可能性，每个活动的面积为几平方度。我们展示了独立恢复关键K2瞬态，如KSN 2015 K和SN 2018 oh的能力。通过这项调查，我们希望检测到大量的瞬变，并确定第一个全面的瞬变率与寿命$\leq1$天。
英文摘要：
The K2 mission of the Kepler Space Telescope offers a unique possibility to examine sources of both Galactic and Extra-galactic origin with high cadence photometry. Alongside the multitude of supernovae and quasars detected within targeted galaxies, it is likely that Kepler has serendipitously observed many transients throughout K2. Such events will likely have occurred in background pixels, coincidentally surrounding science targets. Analysing the background pixels presents the possibility to conduct a high cadence survey with areas of a few square degrees per campaign. We demonstrate the capacity to independently recover key K2 transients such as KSN 2015K and SN 2018oh. With this survey, we expect to detect numerous transients and determine the first comprehensive rates for transients with lifetimes $\leq1$ day.
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