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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Follow-up observations for IceCube-170922A: Detection of rapid near-infrared variability and intensive monitoring of TXS 0506+056
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Follow-up observations for IceCube-170922A: Detection of rapid near-infrared variability and intensive monitoring of TXS 0506+056

机译：ICecube-170922A的后续观察结果：检测快速近红外变宽和TXS 0506 + 056的密集监测

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摘要

We present our follow-up observations to search for an electromagnetic counterpart of the IceCube high-energy neutrino IceCube-170922A. Monitoring observations of a likely counterpart, TXS 0506+056, are also described. First, we quickly took optical and near-infrared images of seven flat-spectrum radio sources within the IceCube error region right after the neutrino detection and found a rapid flux decline of TXS 0506+056 in Kanata/HONIR J-band data. Motivated by this discovery, intensive follow-up observations of TXS 0506+056 were continuously performed, including our monitoring imaging observations, spectroscopic observations, and polarimetric observations in optical and near-infrared wavelengths. TXS 0506+056 showed a large-amplitude (similar to 1.0 mag) variability in a time scale of several days or longer, although no significant variability was detected in a time scale of a day or shorter. TXS 0506+056 also showed a bluer-when-brighter trend in optical and near-infrared wavelengths. Structure functions of the variabilities were examined and indicate that TXS 0506+056 is not a special blazar in terms of optical variability. Polarization measurement results of TXS 0506+056 are also discussed.
机译：我们提出了我们的后续观测，以寻找与冰立方高能中微子冰立方-170922A的电磁对应物。还描述了可能的对应物TXS 0506+056的监测观察结果。首先，在中微子探测之后，我们迅速拍摄了冰立方误差区内七个平谱射电源的光学和近红外图像，并在Kanata/HONIR J波段数据中发现TXS 0506+056的通量迅速下降。在这一发现的推动下，持续对TXS 0506+056进行了深入的后续观察，包括我们的监测成像观察、光谱观察以及光学和近红外波长的偏振观察。TXS 0506+056在几天或更长的时间尺度上显示出较大的振幅（类似于1.0 mag）变化，但在一天或更短的时间尺度上未检测到显著的变化。TXS 0506+056在光学和近红外波长更亮时也显示出更蓝的趋势。对变异性的结构函数进行了检验，表明TXS 0506+056在光学变异性方面不是一个特殊的blazar。还讨论了TXS 0506+056的偏振测量结果。

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    Morokuma Tomoki; Utsumi Yousuke; Ohta Kouji; Yamanaka Masayuki; Kawabata Koji S.; Inoue Yoshiyuki; Tanaka Masaomi; Yoshida Michitoshi; Itoh Ryosuke; Sasada Mahito; Tominaga Nozomu; Mori Hiroki; Kawabata Miho; Nakaoka Tatsuya; Chogi Maiko; Abe Taisei; Huang Ruochen; Kawahara Naoki; Kimura Hiroki; Nagashima Hiroki; Takagi Kengo; Yamazaki Yuina; Liu Wei; Ohsawa Ryou; Sako Shigeyuki; Murata Katsuhiro L.; Morihana Kumiko; Gilligan Christina K.; Isogai Keisuke; Kimura Mariko; Wakamatsu Yasuyuki; Ohnishi Ryuhei; Takayama Masaki; Honda Satoshi; Matsuoka Yoshiki; Yamashita Takuji; Nagataki Shigehiro; Tanaka Yasuyuki T.;

  • 作者单位

    Univ Tokyo Grad Sch Sci Inst Astron 2-21-1 Osawa Mitaka Tokyo 1810015 Japan;

    Stanford Univ Kavli Inst Particle Astrophys &

    Cosmol SLAC Natl Accelerator Lab Menlo Pk CA 94025 USA;

    Kyoto Univ Grad Sch Sci Dept Astron Sakyo Ku Kitashirakawa Oiwake Cho Kyoto Kyoto 6068502 Japan;

    Kyoto Univ 0Kayama Observ 3037-5 Honjo Asakuchi Okayama 7190232 Japan;

    Hiroshima Univ Hiroshima Astrophys Sci Ctr 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Osaka Univ Grad Sch Sci Dept Earth &

    Space Sci 1-1 Machikaneyama Toyonaka Osaka 5600043 Japan;

    Tohoku Univ Astron Inst Aoba Ku Sendai Miyagi 9808578 Japan;

    Natl Inst Nat Sci Natl Astron Observ Japan Subaru Telescope 650 North Aohoku Pl Hilo HI 96720 USA;

    Bisei Astron Observ 1723-70 Okura Ibara Okayama 7141411 Japan;

    Hiroshima Univ Hiroshima Astrophys Sci Ctr 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Univ Tokyo Kavli Inst Phys &

    Math Universe WPI UTIAS 5-1-5 Kashiwanoha Kashiwa Chiba 2778583 Japan;

    Hiroshima Univ Grad Sch Adv Sci &

    Engn 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Kyoto Univ Grad Sch Sci Dept Astron Sakyo Ku Kitashirakawa Oiwake Cho Kyoto Kyoto 6068502 Japan;

    Hiroshima Univ Hiroshima Astrophys Sci Ctr 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Adv Sci &

    Engn 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Adv Sci &

    Engn 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Adv Sci &

    Engn 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Adv Sci &

    Engn 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Adv Sci &

    Engn 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Adv Sci &

    Engn 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Adv Sci &

    Engn 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Grad Sch Adv Sci &

    Engn 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Hiroshima Univ Hiroshima Astrophys Sci Ctr 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

    Univ Tokyo Grad Sch Sci Inst Astron 2-21-1 Osawa Mitaka Tokyo 1810015 Japan;

    Univ Tokyo Grad Sch Sci Inst Astron 2-21-1 Osawa Mitaka Tokyo 1810015 Japan;

    Tokyo Inst Technol Dept Phys Meguro Ku 2-12-1 Ookayama Tokyo 1528551 Japan;

    Nagoya Univ Dept Astrophys Chikusa Ku Nagoya Aichi 4648602 Japan;

    Dartmouth Coll Dept Phys &

    Astron Hanover NH 03784 USA;

    Kyoto Univ 0Kayama Observ 3037-5 Honjo Asakuchi Okayama 7190232 Japan;

    Kyoto Univ Grad Sch Sci Dept Astron Sakyo Ku Kitashirakawa Oiwake Cho Kyoto Kyoto 6068502 Japan;

    Kyoto Univ Grad Sch Sci Dept Astron Sakyo Ku Kitashirakawa Oiwake Cho Kyoto Kyoto 6068502 Japan;

    Kyoto Univ Grad Sch Sci Dept Astron Sakyo Ku Kitashirakawa Oiwake Cho Kyoto Kyoto 6068502 Japan;

    Univ Hyogo Ctr Astron Nishi Harima Astron Observ 407-2 Nishigaichi Sayo Hyogo 4072 Japan;

    Univ Hyogo Ctr Astron Nishi Harima Astron Observ 407-2 Nishigaichi Sayo Hyogo 4072 Japan;

    Ehime Univ Res Ctr Space &

    Cosm Evolut 2-5 Bunkyo Cho Matsuyama Ehime 7908577 Japan;

    Ehime Univ Res Ctr Space &

    Cosm Evolut 2-5 Bunkyo Cho Matsuyama Ehime 7908577 Japan;

    RIKEN Interdisciplinary Theoret &

    Math Sci Program iTHE 2-1 Hirosawa Saitama 3510198 Japan;

    Hiroshima Univ Hiroshima Astrophys Sci Ctr 1-3-1 Kagamiyama Higashihiroshima Hiroshima 7398526 Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 天文学;
  • 关键词

    BL Lacertae objects: general; BL Lacertae objects: individual (TXS 0506+056); galaxies: active; neutrinos; relativistic processes; surveys;

    机译：Bl Lacertae对象：General;Bl Lacertae对象：个人（TXS 0506 + 056）;星系：活跃;中微子;相对论的过程;调查;

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