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A fast radio burst localized to a massive galaxy

机译：一个快速的无线电爆裂，本地化为巨大的星系

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摘要

Intense, millisecond-duration bursts of radio waves (named fast radio bursts) have been detected from beyond the Milky Way(1). Their dispersion measures-which are greater than would be expected if they had propagated only through the interstellar medium of the Milky Way-indicate extragalactic origins and imply contributions from the intergalactic medium and perhaps from other galaxies(2). Although several theories exist regarding the sources of these fast radio bursts, their intensities, durations and temporal structures suggest coherent emission from highly magnetized plasma(3,4). Two of these bursts have been observed to repeat(5,6), and one repeater (FRB 121102) has been localized to the largest star-forming region of a dwarf galaxy at a cosmological redshift of 0.19 (refs. (7-9)). However, the host galaxies and distances of the hitherto non-repeating fast radio bursts are yet to be identified. Unlike repeating sources, these events must be observed with an interferometer that has sufficient spatial resolution for arcsecond localization at the time of discovery. Here we report the localization of a fast radio burst (FRB 190523) to a few-arcsecond region containing a single massive galaxy at a redshift of 0.66. This galaxy is different from the host of FRB 121102, as it is a thousand times more massive, with a specific star-formation rate (the star-formation rate divided by the mass) a hundred times smaller.
机译：从银河系（1）之外，已检测到无线电波（命名快速无线电突发）的强烈，毫秒持续的爆发。它们的分散措施 - 如果它们仅通过银河系的星际培养基繁殖 - 表明紫外线起源，并且意味着来自白蚁介质的促进和来自其他星系（2）的贡献，那么它们的分散措施是大于预期的。尽管存在关于这些快速无线电突发的来源的几个理论，但它们的强度，持续时间和时间结构表明来自高磁化等离子体（3,4）的相干发射。已经观察到这些突发中的两种重复（5,6），并且一台中继器（FRB 121102）已经定位在0.19的宇宙学红移处的矮星系的最大星形区域（参考文献。（7-9） ）。然而，迄今为止迄今为止不重复快速无线电突发的主机星系和距离尚未被识别。与重复源不同，必须使用干涉仪观察这些事件，该干涉仪在发现时具有足够的空间分辨率，用于发现arcsecond定位。在这里，我们将快速无线电突发（FRB 190523）的定位报告给几个包含在0.66的红移的单个大型星系的几个弧形区域。该星系与FRB 121102的宿主不同，因为它的巨大倍数是千倍，具有特定的星形成速率（除了质量的星形率除以质量）百倍。

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  • 来源
    《Nature》 |2019年第7769期|352-354|共3页
  • 作者

    Ravi V.; Catha M.; DAddario L.; Djorgovski S. G.; Hallinan G.; Hobbs R.; Kocz J.; Kulkarni S. R.; Shi J.; Vedantham H. K.; Weinreb S.; Woody D. P.;

  • 作者单位

    CALTECH Cahill Ctr Astron & Astrophys Pasadena CA 91125 USA|Ctr Astrophys Harvard & Smithsonian Cambridge MA 02138 USA;

    CALTECH Owens Valley Radio Observ Big Pine CA USA;

    CALTECH Cahill Ctr Astron & Astrophys Pasadena CA 91125 USA;

    CALTECH Cahill Ctr Astron & Astrophys Pasadena CA 91125 USA;

    CALTECH Cahill Ctr Astron & Astrophys Pasadena CA 91125 USA;

    CALTECH Owens Valley Radio Observ Big Pine CA USA;

    CALTECH Cahill Ctr Astron & Astrophys Pasadena CA 91125 USA;

    CALTECH Cahill Ctr Astron & Astrophys Pasadena CA 91125 USA;

    CALTECH Cahill Ctr Astron & Astrophys Pasadena CA 91125 USA;

    CALTECH Cahill Ctr Astron & Astrophys Pasadena CA 91125 USA|Netherlands Inst Radio Astron ASTRON Dwingeloo Netherlands;

    CALTECH Cahill Ctr Astron & Astrophys Pasadena CA 91125 USA;

    CALTECH Owens Valley Radio Observ Big Pine CA USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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