First Constraining Upper Limits on Gravitational-wave Emission from NS 1987A in SNR 1987A
First Constraining Upper Limits on Gravitational-wave Emission from NS 1987A in SNR 1987A
复制标题
DOI：
10.3847/2041-8213/ac84dc
复制
发表时间：
2022-06
期刊：
影响因子：
--
通讯作者：
B. Owen;L. Lindblom;Luciano Soares Pinheiro
中科院分区：
文献类型：
--
作者：
B. Owen;L. Lindblom;Luciano Soares Pinheiro
我们报告了NS 1987a的连续重力波（GWS），该搜索涵盖了一个75-275 Hz的频段，其中包括第一次进行的旋转参数，并在125 Hz和8.7 lig lig lig lig lig section-section-section of lig lig lig lig the section-section contress of Section of lig lig section contression of tir。 ysical信号，我们将GW发射的上限设置为90％置信度的2×10-25的固有应变，这使得第一个搜索是第一个一致的，对于NS 1987a的连续GWS是一个基于第一个一致的限制，以击败NS 1987a。
We report on a search for continuous gravitational waves (GWs) from NS 1987A, the neutron star born in SN 1987A. The search covered a frequency band of 75–275 Hz, included a wide range of spin-down parameters for the first time, and coherently integrated 12.8 days of LIGO data below 125 Hz and 8.7 days of LIGO data above 125 Hz from the second Advanced LIGO–Virgo observing run. We found no astrophysical signal. We set upper limits on GW emission as tight as an intrinsic strain of 2 × 10−25 at 90% confidence. The large spin-down parameter space makes this search the first astrophysically consistent one for continuous GWs from NS 1987A. Our upper limits are the first consistent ones to beat an analog of the spin-down limit based on the age of the neutron star and hence are the first GW observations to put new constraints on NS 1987A.