Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: All-sky coherent search for continuous gravitational waves in 6-7 Hz
  band with a torsion-bar antenna   A torsion-bar antenna (TOBA) is a low-frequency terrestrial gravitational
wave (GW) antenna which consists of two orthogonal bar-shaped test masses. We
upgraded the prototype TOBA and achieved the strain sensitivity $10^{-10}$
Hz$^{-1/2}$ at around 1 Hz. We operated the upgraded TOBA (called the "Phase-II
TOBA") located at Tokyo in Japan for 22.5 hours and performed an all-sky
coherent search for continuous GWs using the $\mathcal{F}$-statistic. We place
upper limits on continuous GWs from electromagnetically unknown sources in the
frequency range from 6 Hz to 7 Hz with the first derivative of frequency less
than $7.62 \times 10^{-11}$ Hz/s using data from the TOBA. As a result, no
significant GW signals are found in the frequency band 6-7 Hz. The most
stringent upper limit upper limit on the dimensionless GW strain with 95%
confidence level in this band is $3.6 \times 10^{-12}$ at 6.84 Hz.

31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
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The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph