Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comprehensive analysis of a dense sample of FRB 121102 bursts   We present an analysis of a densely repeating sample of bursts from the first
repeating fast radio burst, FRB 121102. We reanalysed the data used by Gourdji
et al. (2019) and detected 93 additional bursts using our single-pulse search
pipeline. In total, we detected 133 bursts in three hours of data at a center
frequency of 1.4 GHz using the Arecibo telescope, and develop robust modeling
strategies to constrain the spectro-temporal properties of all the bursts in
the sample. Most of the burst profiles show a scattering tail, and burst
spectra are well modeled by a Gaussian with a median width of 230 MHz. We find
a lack of emission below 1300 MHz, consistent with previous studies of FRB
121102. We also find that the peak of the log-normal distribution of wait times
decreases from 207 s to 75 s using our larger sample of bursts, as compared to
that of Gourdji et al. (2019). Our observations do not favor either Poissonian
or Weibull distributions for the burst rate distribution. We searched for
periodicity in the bursts using multiple techniques but did not detect any
significant period. The cumulative burst energy distribution exhibits a broken
power-law shape, with the lower and higher-energy slopes of $-0.4\pm0.1$ and
$-1.8\pm0.2$, with the break at $(2.3\pm0.2)\times 10^{37}$ ergs. We provide
our burst fitting routines as a python package BURSTFIT that can be used to
model the spectrogram of any complex FRB or pulsar pulse using robust fitting
techniques. All the other analysis scripts and results are publicly available.

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The categories of this paper are: hep-ex
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The categories of this paper are: comp-gas
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
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The categories of this paper are: supr-con
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The categories of this paper are: math-ph
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The categories of this paper are: econ
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The categories of this paper are: chao-dyn
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ph
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The categories of this paper are: patt-sol