Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A search for gamma-ray prompt emission associated with the Lorimer Burst
  FRB010724   No transient electromagnetic emission has yet been found in association to
fast radio bursts (FRBs), the only possible exception (3sigma confidence) being
the putative gamma-ray signal detected in Swift/BAT data in the energy band
15-150 keV at the time and position of FRB131104. Systematic searches for hard
X/gamma-ray counterparts to other FRBs ended up with just lower limits on the
radio/gamma-ray fluence ratios. In 2001, at the time of the earliest discovered
FRBs, the BeppoSAX Gamma-Ray Burst Monitor (GRBM) was one of the most sensitive
open sky gamma-ray monitors in the 40-700~keV energy band. During its lifetime,
one of the FRBs with the highest radio fluence ever recorded, FRB010724 (800 +-
400 Jy ms), also known as the Lorimer burst, was promptly visible to the GRBM.
Upon an accurate modeling of the GRBM background, eased by its equatorial
orbit, we searched for a possible gamma-ray signal in the first 400 s following
the FRB, similar to that claimed for FRB131104 and found no significant
emission down to a 5-sigma limit in the range (0.24-4.7)x10^-6 erg cm^-2
(corresponding to 1 and 400 s integration time, respectively), in the energy
band 40-700 keV. This corresponds to eta = F_radio/F_gamma>10^{8-9} Jy ms
erg^-1 cm^2, i.e. the deepest limit on the ratio between radio and gamma-ray
fluence, which rules out a gamma-ray counterpart similar to that of FRB131104.
We discuss the implications on the possible mechanisms and progenitors that
have been proposed in the literature, also taking into account its relatively
low dispersion measure (375 +- 3 pc cm^-3) and an inferred redshift limit of
z<0.4.

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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-th
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The categories of this paper are: ao-sci
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The categories of this paper are: math
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The categories of this paper are: hep-lat
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: alg-geom
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The categories of this paper are: stat
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The categories of this paper are: physics
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The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: atom-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: supr-con