We study the effect of short term variations of the evolution of AM CVn systems on their gravitational wave emissions and in particular LISA observations. We model the systems according to their equilibrium mass-transfer evolution as driven by gravitational wave emission and tidal interaction, and determine their reaction to a sudden perturbation of the system. This is inspired by the suggestion to explain the orbital period evolution of the ultra-compact binary systems V407 Vul and RX-J0806+1527 by non-equilibrium mass transfer. The characteristics of the emitted gravitational wave signal are deduced from a Taylor expansion of a Newtonian quadrupolar emission model, and the changes in signal structure as visible to the LISA mission are determined. We show that short term variations can significantly change the higher order terms in the expansion, and thus lead to spurious (non) detection of frequency derivatives. This may hamper the estimation of the parameters of the system, in particular their masses and distances. However, we find that overall detection is still secured as signals still can be described by general templates. We conclude that a better modelling of the effects of short term variations is needed to prepare the community for astrophysical evaluations of real gravitational wave data of AM CVn systems.
A new model for the continuum spectra of AM CVn binaries and multi-messenger inference with normalizing flows
University of Manitoba（曼尼托巴大学）；Winnipeg Institute for Theoretical Physics（温尼伯理论物理研究所）；University of Texas Rio Grande Valley（德克萨斯大学里奥格兰德河谷分校）；South Texas Space Science Institute（南德克萨斯空间科学研究所）；Carnegie Mellon University（卡内基梅隆大学）；Texas Tech University（德克萨斯理工大学）；Flatiron Institute（平顿研究所）
Probing small-scale anisotropic inflation with stochastic gravitational-wave background
Institute of High Energy Physics, Chinese Academy of Sciences（中国科学院高能物理研究所）；University of Chinese Academy of Sciences（中国科学院大学）；Center for Joint Quantum Studies and Department of Physics, School of Science, Tianjin University（天津大学理学院量子联合研究中心及物理系）；School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, UCAS（中国科学院大学杭州高等研究院基础科学与数学学院）
Gas-induced gravitational-wave dephasing and accretion periodicities of live post-Newtonian massive black hole binaries: warm disk
Center for Cosmology and Particle Physics, Physics Department, New York University（纽约大学物理系宇宙学与粒子物理中心）；Dipartimento di Fisica A. Pontremoli, Università degli Studi di Milano（米兰大学A. Pontremoli物理系）；DiSAT, Università degli Studi dell’Insubria（因苏布里亚大学DiSAT）；INFN, Sezione di Milano-Bicocca（意大利国家核物理研究所米兰-比可卡分部）
Self-Interacting Dark Matter-Induced Dynamical Friction and Its Imprint on EMRI Gravitational Waves
School of Physics and Astronomy, Shanghai Jiao Tong University（上海交通大学物理与天文学院）；School of Aeronautics and Astronautics, Shanghai Jiao Tong University（上海交通大学航空航天学院）
Detecting gravitational wave background with equivalent configurations in the network of space based optical lattice clocks
Hangzhou Institute for Advanced Study, UCAS（杭州高等研究院，UCAS）；National Astronomical Observatories, Chinese Academy of Sciences（中国科学院国家天文台）；Wuhan University（武汉大学）；CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences（中国科学院理论物理研究所）；Taiji Laboratory for Gravitational Wave Universe (Beijing/Hangzhou), University of Chinese Academy of Sciences（中国科学院大学太极引力波宇宙实验室（北京/杭州））
Evolution of circular, non-equatorial orbits of Kerr black holes due to gravitational-wave emission: II. Inspiral trajectories and gravitational waveforms
