Continuous gravitational waves from Galactic neutron stars: demography, detectability and prospects
Max Planck Institute for Gravitational Physics (Albert Einstein Institute)(马克斯·普朗克引力物理研究所(爱因斯坦研究所));Leibniz Universität Hannover(汉诺威莱布尼茨大学);Max Planck Institute for Astronomy(马克斯·普朗克天文学研究所);University of Utah(犹他大学);California Institute of Technology(加州理工学院);The University of Tokyo(东京大学);University of Portsmouth(朴茨茅斯大学)
Gianluca Pagliaro, Maria Alessandra Papa, Jing Ming, Jianhui Lian, Daichi Tsuna, Claudia Maraston, Daniel Thomas
We study the prospects for detection of continuous gravitational signals from "normal" Galactic neutron stars, i.e. non-recycled ones. We use a synthetic population generated by evolving stellar remnants in time, according to several models. We consider the most recent constraints set by all-sky searches for continuous gravitational waves and use them for our detectability criteria. We discuss detection prospects for the current and the next generation of gravitational wave detectors. We find that neutron stars whose ellipticity is solely caused by magnetic deformations cannot produce any detectable signal, not even by 3rd-generation detectors. Currently detectable sources all have $B\lesssim10^{12}$ G and deformations not solely due to the magnetic field. For these in fact we find that the larger the magnetic field is, the larger is the ellipticity required for the signal to be detectable and this ellipticity is well above the value induced by the magnetic field. Third-generation detectors as the Einstein Telescope and Cosmic Explorer will be able to detect up to $\approx 250$ more sources than current detectors. We briefly treat the case of recycled neutron stars, with a simplified model. We find that continuous gravitational waves from these objects will likely remain elusive to detection by current detectors but should be detectable with the next generation of detectors.
Multiband Gravitational Wave Detection Prospects for M31 UCXB-1 System in Low and Middle Frequency Band
Institute for Gravitational Wave Astronomy, Henan Academy of Sciences(河南省科学院引力波天文研究所);School of physics and astronomy, Beijing Normal University(北京师范大学物理与天文学院);School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences(中国科学院大学杭州高等研究院基础科学与数学学院);National Astronomical Observatories, Chinese Academy of Sciences(中国科学院国家天文台);School of Astronomy and Space Science, University of Chinese Academy of Sciences(中国科学院大学天文学与空间科学学院)
Ringdown Signatures of Dehnen Dark Matter Halos: Fluid Modes and Detectability with Space-Based Detectors
Center for Gravitational Wave Experiment, National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences(中国科学院力学研究所微重力国家实验室引力波实验中心)
Sub-Solar Mass Intermediate Mass Ratio Inspirals: Waveform Systematics and Detection Prospects with Gravitational Waves
Indian Institute of Science Education and Research(印度科学教育与研究机构);Nikhef(荷兰国家核与粒子物理研究所);Inter-University Centre for Astronomy and Astrophysics(大学间天文学与天体物理学中心);Utrecht University(乌得勒支大学)
Prospective constraints on dark energy from nanohertz individual gravitational wave sources
College of Engineering Physics, Shenzhen Technology University(深圳理工大学工程物理学院);Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Shenzhen Technology University(深圳理工大学超强激光与先进材料技术重点实验室);Institute for Gravitational Wave Astronomy, Henan Academy of Sciences(河南省科学院引力波天文研究所);School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences(中国科学院大学杭州高等研究院基础科学与数学学院)
Prospects for Observing Gravity-gradient Noise and Earthquake Gravity Signals with CHRONOS
National Institute of Physics, University of the Philippines - Diliman(菲律宾大学迪里曼分校国家物理研究所);Center for High Energy and High Field (CHiP), National Central University(国立中央大学高能高场中心);Institute of Physics, Academia Sinica(中央研究院物理研究所);Institute of Particle and Nuclear Studies, High Energy Acceleration Research Organization (KEK)(高能加速器研究机构粒子与核研究部)