Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Radio-interferometric Monitoring of FRB 131104: A Coincident AGN Flare, but No Evidence for a Cosmic Fireball

    Access Status
    Fulltext not available
    Authors
    Shannon, Ryan
    Ravi, V.
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Shannon, R. and Ravi, V. 2017. Radio-interferometric Monitoring of FRB 131104: A Coincident AGN Flare, but No Evidence for a Cosmic Fireball. The Astrophysical Journal Letters. 837: L22.
    Source Title
    The Astrophysical Journal Letters
    DOI
    10.3847/2041-8213/aa62fb
    ISSN
    2041-8205
    School
    Curtin Institute of Radio Astronomy (Physics)
    URI
    http://hdl.handle.net/20.500.11937/52123
    Collection
    • Curtin Research Publications
    Abstract

    The localization of fast radio bursts (FRBs) has been hindered by the poor angular resolution of the detection observations and inconclusive identification of transient or variable counterparts. Recently a ?-ray pulse of 380 s duration has been associated with FRB 131104. We report on radio-continuum imaging observations of the original localization region of the FRB, beginning three days after the event and comprising 25 epochs over 2.5 years. We argue that the probability of an association between the FRB and the ?-ray transient has been overestimated. We provide upper limits on radio afterglow emission that would be predicted if the ?-ray transient was associated with an energetic ?-ray burst. We further report the discovery of an unusual variable radio source spatially and temporally coincident with FRB 131104, but not spatially coincident with the ?-ray event. The radio variable flares by a factor of 3 above its long-term average within 10 day of the FRB at 7.5 GHz, with a factor-of-2 increase at 5.5 GHz. Since the flare, the variable has persisted with only modest modulation and never approached the flux density observed in the days after the FRB. We identify an optical counterpart to the variable. Optical and infrared photometry, and deep optical spectroscopy, suggest that the object is a narrow-line radio active galactic nucleus. © 2017. The American Astronomical Society. All rights reserved.

    Related items

    Showing items related by title, author, creator and subject.

    • Radio and X-ray variability in the Seyfert galaxy NGC 4051
      Jones, S.; McHardy, I.; Moss, D.; Seymour, Nick; Breedt, E.; Uttley, P.; Körding, E.; Tudose, V. (2011)
      We present intensive quasi-simultaneous X-ray and radio monitoring of the narrow line Seyfert 1 galaxy NGC 4051, over a 16-month period in 2000–01. The X-ray observations were made with the Proportional Counter Array on ...
    • A search for variable and transient radio sources in the extended Chandra Deep Field South at 5.5 GHz
      Bell, M.; Huynh, M.; Hancock, Paul; Murphy, T.; Gaensler, B.; Burlon, D.; Trott, C.; Bannister, K. (2015)
      We present a three epoch survey for transient and variables in the extended Chandra Deep Field South at 5.5 GHz with the Australia Telescope Compact Array. A region covering ~0.3 deg2 was observed on time-scales of 2.5 ...
    • Interstellar and intergalactic scattering as astrophysical probes
      Koay, Jun Yi (2012)
      The scattering of radio waves and multipath propagation in the interstellar medium (ISM) of our Galaxy produces various observable phenomena such as the interstellar scintillation (ISS) and angular broadening of compact ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.