论文标题

Jagwar Prowls Ligo/处女座O3纸I:无线电搜索二进制黑洞合并候选人S191216AP可能的多理智对应物

The JAGWAR Prowls LIGO/Virgo O3 Paper I: Radio Search of a Possible Multi-Messenger Counterpart of the Binary Black Hole Merger Candidate S191216ap

论文作者

Bhakta, D., Mooley, K. P., Corsi, A., Balasubramanian, A., Dobie, D., Frail, D. A., Hallinan, G., Kaplan, D. L., Myers, S. T., Singer, L. P.

论文摘要

我们使用Karl G. Jansky非常大的阵列(VLA)提出了敏感的搜索,该阵列(VLA)对引力波候选候选者S191216AP的无线电对应物,分类为二进制黑洞合并,并建议可能是基于高能量中午和TEV光子元素的多通电机事件。我们在0.3度$^2 $ $^2 $的C频段(4--8 GHz)中进行了盲目搜索,该伽马射线的S191216AP报告了高空水Cherenkov天文台(HAWC)。我们的搜索在合并后的130天内跨越了三个时期,并具有75 $ $ $ jy/beam/beam/beam(4 $σ$)的平均源检测阈值,产生了5个与AGN活动相关的可变源,没有S191216AP的确定性对应物。我们发现$ <$ 2 \%($ 3.0 \ pm1.3 $ \%)在6 GHz处的持续无线电来源,在$ <$ 1周(周 - 月份)的时间表上,与以前的无线电可变性研究一致。我们的4 $σ$无线电发光上限$ \ sim $ 1.2 $ \ times {10}^{28} $ erg s $^{ - 1} $ hz $^{ - 1} $在S191216AP的余波上,在HAWC错误区域内,在HAWC错误区域内,是5--10 ix times deeper ti times deeper viste times deeper efter after after after bbbh searse searse searles efter aftg efter aftgh searse searles searse searles。将这个上限与\ citeauthor {perna2019}给出的理论期望进行比较,以bbh合并发起的推定喷气机,用于具有能量$ \ simeq10^{49} $ erg的轴喷射,我们可以排除乘坐Quet okles $ \ sieldsim $ 20 dgrees(假设我们在柜台范围内,我们都会在complete compart useve necim under counter counterpart never counter counter counter counter counter counterpart unect uses counterpart。

We present a sensitive search with the Karl G. Jansky Very Large Array (VLA) for the radio counterpart of the gravitational wave candidate S191216ap, classified as a binary black hole merger, and suggested to be a possible multi-messenger event, based on the detection of a high energy neutrino and a TeV photon. We carried out a blind search at C band (4--8 GHz) over 0.3 deg$^2$ of the gamma-ray counterpart of S191216ap reported by the High-Altitude Water Cherenkov Observatory (HAWC). Our search, spanning three epochs over 130 days post-merger and having mean source-detection threshold of 75$μ$Jy/beam (4$σ$), yielded 5 variable sources associated with AGN activity and no definitive counterpart of S191216ap. We find $<$2\% ($3.0\pm1.3$\%) of the persistent radio sources at 6 GHz to be variable on a timescale of $<$1 week (week--months), consistent with previous radio variability studies. Our 4$σ$ radio luminosity upper limit of $\sim$1.2$\times{10}^{28}$ erg s$^{-1}$ Hz$^{-1}$ on the afterglow of S191216ap, within the HAWC error region, is 5--10 times deeper than previous BBH radio afterglow searches. Comparing this upper limit with theoretical expectations given by \citeauthor{Perna2019} for putative jets launched by BBH mergers, for on-axis jets having energy $\simeq10^{49}$ erg, we can rule out jet opening angles $\lesssim$20 degrees (assuming that the counterpart lies within the 1$σ$ HAWC region that we observed).

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