Periodic activity from a fast radio burst source
Artikel i vetenskaplig tidskrift, 2020
Fast radio bursts (FRBs) are bright, millisecond-duration radio transients originating from sources at extragalactic distances1, the origin of which is unknown. Some FRB sources emit repeat bursts, ruling out cataclysmic origins for those events2–4. Despite searches for periodicity in repeat burst arrival times on timescales from milliseconds to many days2,5–7, these bursts have hitherto been observed to appear sporadically and—although clustered8—without a regular pattern. Here we report observations of a 16.35 ± 0.15 day periodicity (or possibly a higher-frequency alias of that periodicity) from the repeating FRB 180916.J0158+65 detected by the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst Project4,9. In 38 bursts recorded from 16 September 2018 to 4 February 2020 utc, we find that all bursts arrive in a five-day phase window, and 50 per cent of the bursts arrive in a 0.6-day phase window. Our results suggest a mechanism for periodic modulation either of the burst emission itself or through external amplification or absorption, and disfavour models invoking purely sporadic processes.
Fourier transform
neutron
signal noise ratio
fast radio burst
vortex motion
experimental study
cosmic radiation
amplification
periodicity
simulation
aastronomy
timescale
rotation
dispersion
Författare
M. Amiri
University of British Columbia (UBC)
B. Andersen
McGill University
K. Bandura
West Virginia University
M. Bhardwaj
McGill University
P. J. Boyle
McGill University
C. Brar
McGill University
P. Chawla
McGill University
T. Chen
Massachusetts Institute of Technology (MIT)
J. F. Cliche
McGill University
D. Cubranic
University of British Columbia (UBC)
M. Deng
University of British Columbia (UBC)
N. T. Denman
National Radio Astronomy Observatory
M. Dobbs
McGill University
F. Q. Dong
University of British Columbia (UBC)
M. Fandino
University of British Columbia (UBC)
E. Fonseca
McGill University
B. Gaensler
University of Toronto
U. Giri
Perimeter Institute for Theoretical Physics
University of Waterloo
D. C. Good
University of British Columbia (UBC)
M. Halpern
University of British Columbia (UBC)
J. W. T. Hessels
Universiteit Van Amsterdam
Netherlands Institute for Radio Astronomy (ASTRON)
A. S. Hill
University of British Columbia (UBC)
National Research Council Canada
C. Höfer
University of British Columbia (UBC)
A. Josephy
McGill University
J. W. Kania
West Virginia University
R. Karuppusamy
Max-Planck-Gesellschaft
V. M. Kaspi
McGill University
A. Keimpema
Joint Institute for VLBI in Europe (JIVE)
Franz Kirsten
Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik
T. L. Landecker
National Research Council Canada
D. A. Lang
University of Waterloo
Perimeter Institute for Theoretical Physics
C. Leung
Massachusetts Institute of Technology (MIT)
D. Z. Li
Institut canadien d'astrophysique théorique
University of Toronto
Max-Planck-Gesellschaft
H. H. Lin
Institut canadien d'astrophysique théorique
Max-Planck-Gesellschaft
B. Marcote
Joint Institute for VLBI in Europe (JIVE)
K. Masui
Massachusetts Institute of Technology (MIT)
R. Mckinven
University of Toronto
J. Mena-Parra
Massachusetts Institute of Technology (MIT)
M. Merryfield
McGill University
D. Michilli
McGill University
N. Milutinovic
University of British Columbia (UBC)
National Research Council Canada
A. Mirhosseini
University of British Columbia (UBC)
A. Naidu
McGill University
L. B. Newburgh
Yale University
C. Ng
University of Toronto
K. Nimmo
Universiteit Van Amsterdam
Netherlands Institute for Radio Astronomy (ASTRON)
Z. Paragi
Joint Institute for VLBI in Europe (JIVE)
C. Patel
University of Toronto
McGill University
U. L. Pen
Perimeter Institute for Theoretical Physics
Institut canadien d'astrophysique théorique
University of Toronto
Max-Planck-Gesellschaft
T. Pinsonneault-Marotte
University of British Columbia (UBC)
Z. Pleunis
McGill University
M. Rafiei-Ravandi
Perimeter Institute for Theoretical Physics
M. Rahman
University of Toronto
S. M. Ransom
National Radio Astronomy Observatory
A. Renard
University of Toronto
P. Sanghavi
West Virginia University
P. Scholz
University of Toronto
National Research Council Canada
J. R. Shaw
University of British Columbia (UBC)
K. Shin
Massachusetts Institute of Technology (MIT)
S. R. Siegel
McGill University
S. Singh
McGill University
R. J. Smegal
University of British Columbia (UBC)
K. M. Smith
Perimeter Institute for Theoretical Physics
I. H. Stairs
University of British Columbia (UBC)
S. P. Tendulkar
McGill University
I. Tretyakov
University of Toronto
K. Vanderlinde
University of Toronto
H. Wang
Massachusetts Institute of Technology (MIT)
X. Wang
Sun Yat-Sen University
D. Wulf
McGill University
P. Yadav
University of British Columbia (UBC)
A. V. Zwaniga
McGill University
Nature
0028-0836 (ISSN) 1476-4687 (eISSN)
Vol. 582 7812 351-355Ämneskategorier
Astronomi, astrofysik och kosmologi
Styrkeområden
Energi
Infrastruktur
Onsala rymdobservatorium
DOI
10.1038/s41586-020-2398-2
PubMed
32555491