The repeating fast radio burst FRB 121102: multi-wavelength observations and additional bursts
- Department of Physics and McGill Space Institute, McGill University, Montreal, QC H3A 2T8 (Canada)
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn (Germany)
- ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, 7990 AA Dwingeloo (Netherlands)
- Department of Astronomy and Cornell Center for Astrophysics and Planetary Science, Cornell University, Ithaca, NY 14853 (United States)
- Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States)
- Dept. of Physics and Astronomy, Franklin and Marshall College, Lancaster, PA 17604-3003 (United States)
- National Research Council, Naval Research Laboratory, 4555 Overlook Avenue SW, Washington DC 20375 (United States)
- National Radio Astronomy Observatory, P.O. Box 2, Green Bank, WV 24944 (United States)
- Department of Physics and Astronomy, West Virginia University, Morgantown, WV 26506 (United States)
- Jodrell Bank Centre for Astrophysics, University of Manchester, Manchester, M13 9PL (United Kingdom)
We report on radio and X-ray observations of the only known repeating Fast Radio Burst (FRB) source, FRB 121102. We have detected six additional radio bursts from this source: five with the Green Bank Telescope at 2 GHz, and one at 1.4 GHz with the Arecibo Observatory, for a total of 17 bursts from this source. All have dispersion measures consistent with a single value (∼559 pc cm{sup −3}) that is three times the predicted maximum Galactic contribution. The 2 GHz bursts have highly variable spectra like those at 1.4 GHz, indicating that the frequency structure seen across the individual 1.4 and 2 GHz bandpasses is part of a wideband process. X-ray observations of the FRB 121102 field with the Swift and Chandra observatories show at least one possible counterpart; however, the probability of chance superposition is high. A radio imaging observation of the field with the Jansky Very Large Array at 1.6 GHz yields a 5σ upper limit of 0.3 mJy on any point-source continuum emission. This upper limit, combined with archival Wide-field Infrared Survey Explorer 22 μm and IPHAS Hα surveys, rules out the presence of an intervening Galactic H ii region. We update our estimate of the FRB detection rate in the PALFA survey to be 1.1{sub −1.0}{sup +3.7}×10{sup 4} FRBs sky{sup −1} day{sup −1} (95% confidence) for peak flux density at 1.4 GHz above 300 mJy. We find that the intrinsic widths of the 12 FRB 121102 bursts from Arecibo are, on average, significantly longer than the intrinsic widths of the 13 single-component FRBs detected with the Parkes telescope.
- OSTI ID:
- 22869104
- Journal Information:
- Astrophysical Journal, Vol. 833, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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Simultaneous X-Ray, Gamma-Ray, and Radio Observations of the Repeating Fast Radio Burst FRB 121102