High-energy neutrino follow-up search of gravitational wave event GW150914 with ANTARES and IceCube

We present the high-energy-neutrino follow-up observations of the first gravitational wave transient GW150914 observed by the Advanced LIGO detectors on September 14, 2015. We search for coincident neutrino candidates within the data recorded by the IceCube and Antares neutrino detectors. A possible joint detection could be used in targeted electromagnetic follow-up observations, given the significantly better angular resolution of neutrino events compared to gravitational waves. We find no neutrino candidates in both temporal and spatial coincidence with the gravitational wave event. Within ±500 s of the gravitational wave event, the number of neutrino candidates detected by IceCube and Antares were three and zero, respectively. This is consistent with the expected atmospheric background, and none of the neutrino candidates were directionally coincident with GW150914. We use this nondetection to constrain neutrino emission from the gravitational-wave event.

我们展示了对2015年9月14日由先进激光干涉引力波天文台（Advanced LIGO）探测器观测到的首个引力波瞬变事件GW150914所进行的高能中微子后续观测结果。我们在冰立方（IceCube）和安塔瑞斯（Antares）中微子探测器所记录的数据中寻找符合条件的中微子候选事件。鉴于中微子事件相比引力波具有明显更好的角分辨率，一次可能的联合探测可用于有针对性的电磁后续观测。我们没有发现与引力波事件在时间和空间上都相符的中微子候选事件。在引力波事件前后±500秒内，冰立方和安塔瑞斯探测到的中微子候选事件数量分别为3个和0个。这与预期的大气本底相符，并且这些中微子候选事件中没有一个在方向上与GW150914相符。我们利用这次未探测到的结果来对引力波事件的中微子发射进行限制。