從併合中的高質量雙黑洞尋找重力波


物理系學生會議:從併合中的高質量雙黑洞尋找重力波

Talk:- Searching for Gravitational Waves from the Coalescence of High Mass Black Hole Binaries

GstLAL is a search pipeline used by LIGO to search for gravitational waves from the coalescence of compact binaries (neutron stars and/or black holes), which can be operated in on-line and/or off-line configuration. Before the second observing run (O2), the parameter space covered by GstLAL consisted of binaries with component masses m1,m2 ≥ 1M⊙ (M⊙ is the solar mass) and total mass 2M⊙ ≤ M1+M2 ≤ 100M⊙. In this project, we aim to increase the upper bound of the total mass to 600M⊙ to search for gravitational waves from intermediate mass black holes (IMBH). Simulated signal injections with real noises were used to evaluate the sensitivity of GstLAL when decreasing the lower frequency cut-off to observe signals from IMBH since they merge at a lower frequency. We experimented various techniques such as different bank splitting and h(t) gating schemes to optimize the performance and sensitivity after the inclusion of IMBH signals in a search. This would enable us to detect more gravitational wave signals from the coalescence of black holes with higher masses in real time gravitational wave detection. 
 
時間:2017.05.20(六) 14:30 ~ 14:45
地點:香港中文大學 科學館LT4
講者:Ka Lok Lo
語言:英語

#131

此活動由香港中文大學物理系主辦。

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