Searching for continuous Gravitational Waves in the second data release of the International Pulsar Timing Array
Searching for continuous Gravitational Waves in the second data release of the International Pulsar Timing Array
复制标题
在国际脉冲星计时阵列第二次数据发布中寻找连续引力波
DOI:
10.1093/mnras/stad812
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发表时间:
2023
影响因子:
4.8
通讯作者:
Hazboun, J. S.
中科院分区:
文献类型:
--
作者:
Falxa, M.;Babak, S.;Baker, P. T.;Bécsy, B.;Chalumeau, A.;Chen, S.;Chen, Z.;Cornish, N. J.;Guillemot, L.;Hazboun, J. S.
The International Pulsar Timing Array 2nd data release is the combination of data sets from worldwide collaborations. In this study, we search for continuous waves: gravitational wave signals produced by individual supermassive black hole binaries in the local universe. We consider binaries on circular orbits and neglect the evolution of orbital frequency over the observational span. We find no evidence for such signals and set sky averaged 95 per cent upper limits on their amplitudeh95. The most sensitive frequency is 10 nHz withh95= 9.1 × 10−15. We achieved the best upper limit to date at low and high frequencies of the PTA band thanks to improved effective cadence of observations. In our analysis, we have taken into account the recently discovered common red noise process, which has an impact at low frequencies. We also find that the peculiar noise features present in some pulsars data must be taken into account to reduce the false alarm. We show that using custom noise models is essential in searching for continuous gravitational wave signals and setting the upper limit.
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DOI:
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发表时间:
2009
期刊:
影响因子:
--
作者:
B. Schutz
通讯作者:
B. Schutz
DOI:
--
发表时间:
--
期刊:
影响因子:
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作者:
通讯作者:
--
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
J. Ellis;M. Vallisneri;Stephen Taylor;P. Baker
通讯作者:
P. Baker
影响因子:
6.3
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通讯作者:
Tarafdar et. al
影响因子:
64.8
作者:
H. R.
通讯作者:
H. R.