对双中子星合并的多信使观测
高能天体物理现象
2017-10-25 v2 广义相对论与量子宇宙学
摘要
2017年8月17日，Advanced LIGO 与 Advanced Virgo 探测器通过引力波观测到一个双中子星合并候选体（后命名为 GW170817），合并时间为 UTC 12:41:04。Fermi 伽马射线暴监测器独立探测到一个伽马射线暴（GRB 170817A），相对于合并时间延迟约 1.7 秒。根据引力波信号，该源最初被定位在 31 平方度的天区内，光度距离为 Mpc，组件质量与中子星一致。随后组件质量被测定在 0.86 至 2.26 范围内。跨电磁波段开展的大规模观测活动促成了在合并后不到 11 小时，由 One-Meter, Two Hemisphere (1M2H) 团队使用 1 米 Swope 望远镜在 NGC 4993（约 40 Mpc 处）发现了一个明亮的光学暂现源（SSS17a，现 IAU 编号为 AT 2017gfo）。该光学暂现源在一小时内被多个团队独立探测到。随后的观测针对该天体及其环境展开。早期紫外观测揭示了一个在 48 小时内消退的蓝色暂现源。光学与红外观测显示了约 10 天内的红化演化。在早期未探测到之后，分别在合并后约 9 天与约 16 天于暂现源位置发现了 X 射线与射电辐射。X 射线与射电辐射可能源于与产生紫外/光学/近红外辐射不同的物理过程。在后续搜寻中，未发现与该源一致的超高能伽马射线与中微子候选体。（节选）
引用
@article{arxiv.1710.05833,
title = {Multi-messenger Observations of a Binary Neutron Star Merger},
author = {LIGO Scientific Collaboration and Virgo Collaboration and Fermi GBM and INTEGRAL and IceCube Collaboration and AstroSat Cadmium Zinc Telluride Imager Team and IPN Collaboration and The Insight-Hxmt Collaboration and ANTARES Collaboration and The Swift Collaboration and AGILE Team and The 1M2H Team and The Dark Energy Camera GW-EM Collaboration and the DES Collaboration and The DLT40 Collaboration and GRAWITA and : and GRAvitational Wave Inaf TeAm and The Fermi Large Area Telescope Collaboration and ATCA and : and Australia Telescope Compact Array and ASKAP and : and Australian SKA Pathfinder and Las Cumbres Observatory Group and OzGrav and DWF and AST3 and CAASTRO Collaborations and The VINROUGE Collaboration and MASTER Collaboration and J-GEM and GROWTH and JAGWAR and Caltech- NRAO and TTU-NRAO and NuSTAR Collaborations and Pan-STARRS and The MAXI Team and TZAC Consortium and KU Collaboration and Nordic Optical Telescope and ePESSTO and GROND and Texas Tech University and SALT Group and TOROS and : and Transient Robotic Observatory of the South Collaboration and The BOOTES Collaboration and MWA and : and Murchison Widefield Array and The CALET Collaboration and IKI-GW Follow-up Collaboration and H. E. S. S. Collaboration and LOFAR Collaboration and LWA and : and Long Wavelength Array and HAWC Collaboration and The Pierre Auger Collaboration and ALMA Collaboration and Euro VLBI Team and Pi of the Sky Collaboration and The Chandra Team at McGill University and DFN and : and Desert Fireball Network and ATLAS and High Time Resolution Universe Survey and RIMAS and RATIR and SKA South Africa/MeerKAT},
journal= {arXiv preprint arXiv:1710.05833},
year = {2017}
}
备注
This is a reproduction of the article published in the Astrophysical Journal Letters, under the terms of the Creative Commons Attribution 3.0 licence