scholarly journals Statistical properties of the repeating fast radio burst source FRB 121102

2019 ◽  
Vol 1 (1) ◽  
pp. 22-32 ◽  
Author(s):  
Bing Li ◽  
Long-Biao Li ◽  
Zhi-Bin Zhang ◽  
Jin-Jun Geng ◽  
Li-Ming Song ◽  
...  
Nature ◽  
2020 ◽  
Vol 577 (7789) ◽  
pp. 190-194 ◽  
Author(s):  
B. Marcote ◽  
K. Nimmo ◽  
J. W. T. Hessels ◽  
S. P. Tendulkar ◽  
C. G. Bassa ◽  
...  

Author(s):  
Hai-Nan Lin ◽  
Yu Sang

Abstract The statistical properties of the repeating fast radio burst FRB 121102 are investigated. We find that the cumulative distributions of fluence, flux density, total energy and waiting time can be well fitted by the bent power law. In addition, the probability density functions of fluctuations of fluence, flux density and total energy well follow the Tsallis q-Gaussian distribution. The q values keep steady around q ∼ 2 for different scale intervals, indicating a scale-invariant structure of the bursts. The statistical properties of FRB 121102 are very similar to that of the soft gamma repeater SGR J1550-5418. The underlying physical implications need to be further investigated.


Nature ◽  
2021 ◽  
Vol 598 (7880) ◽  
pp. 267-271
Author(s):  
D. Li ◽  
P. Wang ◽  
W. W. Zhu ◽  
B. Zhang ◽  
X. X. Zhang ◽  
...  

2021 ◽  
Vol 908 (1) ◽  
pp. L10 ◽  
Author(s):  
G. H. Hilmarsson ◽  
D. Michilli ◽  
L. G. Spitler ◽  
R. S. Wharton ◽  
P. Demorest ◽  
...  

Nature ◽  
2020 ◽  
Vol 586 (7831) ◽  
pp. 693-696 ◽  
Author(s):  
R. Luo ◽  
B. J. Wang ◽  
Y. P. Men ◽  
C. F. Zhang ◽  
J. C. Jiang ◽  
...  

2019 ◽  
Vol 887 (2) ◽  
pp. L30 ◽  
Author(s):  
Pravir Kumar ◽  
R. M. Shannon ◽  
Stefan Osłowski ◽  
Hao Qiu ◽  
Shivani Bhandari ◽  
...  

2020 ◽  
Vol 500 (2) ◽  
pp. 2525-2531 ◽  
Author(s):  
P Kumar ◽  
R M Shannon ◽  
C Flynn ◽  
S Osłowski ◽  
S Bhandari ◽  
...  

ABSTRACT The fast radio burst (FRB) population is observationally divided into sources that have been observed to repeat and those that have not. There is tentative evidence that the bursts from repeating sources have different properties than the non-repeating ones. In order to determine the occurrence rate of repeating sources and characterize the nature of repeat emission, we have been conducting sensitive searches for repetitions from bursts detected with the Australian Square Kilometre Array Pathfinder (ASKAP) with the 64-m Parkes radio telescope, using the recently commissioned Ultra-wideband Low (UWL) receiver system, over a band spanning 0.7–4.0 GHz. We report the detection of a repeat burst from the source of FRB 20190711A. The detected burst is 1 ms wide and has a bandwidth of just 65 MHz. We find no evidence of any emission in the remaining part of the 3.3 GHz UWL band. While the emission bandwidths of the ASKAP and UWL bursts show ν−4 scaling consistent with a propagation effect, the spectral occupancy is inconsistent with diffractive scintillation. This detection rules out models predicting broad-band emission from the FRB 20190711A source and puts stringent constraints on the emission mechanism. The low spectral occupancy highlights the importance of sub-banded search methods in detecting FRBs.


Nature ◽  
2021 ◽  
Author(s):  
D. Li ◽  
P. Wang ◽  
W. W. Zhu ◽  
B. Zhang ◽  
X. X. Zhang ◽  
...  

2019 ◽  
Vol 882 (2) ◽  
pp. L18 ◽  
Author(s):  
A. Josephy ◽  
P. Chawla ◽  
E. Fonseca ◽  
C. Ng ◽  
C. Patel ◽  
...  

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