A possible detection of sub-solar mass ultra-compact objects would lead to new perspectives on the existence of black holes that are not of astrophysical origin and/or pertain to formation scenarios of exotic ultra-compact objects. Both possibilities open new perspectives for better understanding of our universe. In this work, we investigate the significance of detection of sub-solar mass binaries with components mass in the range: $10^{-2} M_\odot$ up to 1$M_\odot$, within the expected sensitivity of the ground-based gravitational waves detectors of third-generation, viz., the Einstein Telescope (ET) and the Cosmic Explorer (CE). Assuming a minimum of amplitude signal-to-noise ratio for detection, viz., $ρ= 8$, we find that the maximum horizon distances for an ultra-compact binary system with components mass $10^{-2} \, M_\odot$ and 1$M_\odot$ are 40 Mpc and 1.89 Gpc, respectively, for ET, and 125 Mpc and 5.8 Gpc, respectively, for CE. Other cases are also presented in the text. We derive the merger rate, and discuss consequences on the abundances of primordial black hole (PBH), $f_{\rm PBH}$. Considering the entire mass range [$10^{-2}$ - 1]$M_\odot$, we find $f_{\rm PBH} < 0.70$ ($<$ $0.06$) for ET (CE), respectively.
Overlap reduction functions for a polarized stochastic gravitational-wave background in the Einstein Telescope-Cosmic Explorer and the LISA-Taiji networks
本文将基于球谐展开的重叠减少函数计算方法推广到第三代地基 Einstein Telescope-Cosmic Explorer 网络及 LISA-Taiji 空间联合任务,以分析极化随机引力波背景。
Inferring the role of binary neutron star mergers in r-process nucleosynthesis with multi-messenger observations using Cosmic Explorer and Einstein Telescope
Institute of Physics, University of Greifswald(格赖夫斯瓦尔德大学物理研究所);Department of Astronomy & Astrophysics, Tata Institute of Fundamental Research(塔塔基础研究院天文学与天体物理学系)
Detectability and Parameter Estimation for Einstein Telescope Configurations with GWJulia
Università degli Studi di Padova(帕多瓦大学);INFN Sezione di Padova(意大利国家核物理研究所帕多瓦分部);LUTH, UMR 8102 CNRS, Observatoire de Paris, PSL Research University, Université Paris Diderot(巴黎天文台理论天体物理学实验室);Instituto de Estructura de la Materia (IEM), CSIC(西班牙高等科学研究理事会物质结构研究所);CERN, Theoretical Physics Department(欧洲核子研究中心理论物理部);Università di Pisa(比萨大学);INFN, Sezione di Pisa(意大利国家核物理研究所比萨分部)
Gravitational waveforms from inspiraling compact binaries in quadratic gravity and their parameterized post-Einstein characterization
Universidade Federal do Espı́rito Santo(圣埃斯皮里图联邦大学);Universidade Federal do Rio Grande do Norte(北里奥格兰德联邦大学);Centro Brasileiro de Pesquisas Fı́sicas (CBPF)(巴西物理研究中心)
该研究在二次引力框架下分析了紧凑二元系统 inspiral 阶段的引力波形,并将其偏离广义相对论的特征嵌入到 PPE 框架中,以约束理论参数并提升约束精度。
Cosmology with the lights off: Standard sirens in the Einstein Telescope era
我们探索约束宇宙学的前景,利用引力波(GW)观测的中子星双星的建议爱因斯坦望远镜(ET),利用狭窄的中子星质量函数。双中子星(DNS)双星预计将成为先进LIGO“第一束光”后探测到的第一批源之一,预计在先进时代每年将以几十个的速度被探测到。然而,拟议中的ET每年可以编目数万人。将测得的源红移分布与GW网络距离测定相结合,不仅可以精确测量背景宇宙学参数,而且可以深入了解这些DNS系统的天体物理性质。特别感兴趣的将是探测DNS-二进制创建和随后的合并之间的延迟时间的分布,以及ET的探测范围内的恒星形成率密度的演变。在保持H_0、Ω_{m,0}和Ω_{Λ,0}不变的情况下,我们研究了暗能量状态方程参数恢复的精度,发现只要检测到10^5个DNS双星,我们就可以将这些参数限制到与未来CMB+BAO+SNIa测量的预测限制相似的精度。此外,建模合并延迟时间分布的幂律,和恒星形成率(SFR)密度的参数化版本的Porciani和Madau SF 2模型,我们发现,相关的天体物理参数被限制在10%以内。所有参数精密度均按1/sqrt(N)缩放,其中N是编目检测的数量。我们还研究了精度如何随着宇宙的内在基本属性和网络的距离(可能受到探测器低频截止的影响)而变化。
Dynamical hair growth in black hole binaries in Einstein-scalar-Gauss-Bonnet gravity
SISSA(的里雅斯特国际高等研究学院);INFN Sezione di Trieste(意大利国家核物理研究所的里雅斯特分部);IFPU - Institute for Fundamental Physics of the Universe(宇宙基础物理研究所);Dipartimento di Fisica, Sapienza Università di Roma(罗马第一大学物理系);Instituut voor Theoretische Fysica, KU Leuven(荷鲁芬大学理论物理研究所);Leuven Gravity Institute, KU Leuven(荷鲁芬大学引力研究所);Departament d’Astronomia i Astrofísica, Universitat de València(瓦伦西亚大学天文与天体物理学系);Theoretical Astrophysics, Eberhard Karls University of Tübingen(蒂宾根大学理论天体物理学);Department of Theoretical Physics, Faculty of Physics, Sofia University(索非亚大学物理学院理论物理系);Institute of Mathematics and Informatics, Bulgarian Academy of Sciences(保加利亚科学院数学与信息学研究所)
Probing multiple populations of compact binaries with third-generation gravitational-wave detectors
第三代(3G)引力波(GW)探测器将能够观测到红移高达$\sim 30$的双黑洞合并(BBH)。这使得前所未有的进入整个宇宙历史的BBH的形成和演化。本文考虑了三种起源于不同演化通道的黑洞子群:星系场中孤立形成的黑洞、球状星团中动力学形成的黑洞和由高红移的第三族(PopIII)星形成的黑洞并合。使用来自群体合成分析的输入,我们创建了由两个宇宙探索者和一个爱因斯坦望远镜组成的3G探测器网络的两个月的模拟数据,其中包括$\sim16000$场和集群BBHs以及$\sim400$ Pop III BBHs。首先,我们展示了如何使用非参数模型来推断合并率分布中的主峰和次峰的存在和特征。特别地,由Pop III残留物合并产生的$z\approx 12$周围的次级峰的位置和高度可以被限制在$\mathcal{O}(10\%)$水平。然后,我们进行了建模分析,使用唯象模板的合并率的三个子群体,并提取的分支比和合并率密度的特征参数的个别形成通道。利用这种建模方法,可以将Pop III BBH分数测量的不确定度提高到$\lesssim 10\%$,而场和团簇BBH之间的比率可以以$\sim 50\%$的不确定度测量。
Black hole binaries in shift-symmetric Einstein-scalar-Gauss-Bonnet gravity
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));Institute of Applied Computing & Community Code (IAC3), Universitat de les Illes Balears(巴利阿里群岛大学应用计算与社区代码研究所);KU Leuven(荷语鲁汶大学);Leuven Gravity Institute, KU Leuven(荷语鲁汶大学鲁汶引力研究所);Queen Mary University of London(伦敦大学玛丽女王学院)
Equation of motion for relativistic compact binaries with the strong field point particle limit : Formulation, the first post-Newtonian and multipole terms
Determining the equation of state of neutron stars with Einstein Telescope using tidal effects and r-mode excitations from a population of binary inspirals
Post-Newtonian dynamics of charged compact binaries
International Centre for Theoretical Physics Asia-Pacific, University of Chinese Academy of Sciences(国际理论物理中心亚太区,中国科学院大学);Taiji Laboratory for GW Universe, University of Chinese Academy of Sciences(引力波宇宙太极实验室,中国科学院大学);School of Physics and Optoelectronic Engineering, Yangtze University(长江大学物理与光电工程学院);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);School of Physical Sciences, University of Chinese Academy of Sciences(中国科学院大学物理科学学院);School of Physical Science and Technology, Lanzhou University(兰州大学物理科学与技术学院);Institute of Theoretical Physics, Chinese Academy of Sciences(中国科学院理论物理研究所)
Spin-induced Quadrupole Moment (SIQM) Test for Eccentric Compact Binaries
Indian Institute of Technology Madras(印度马德拉斯理工学院);Centre for Strings, Gravitation and Cosmology, Department of Physics, Indian Institute of Technology Madras(印度马德拉斯理工学院物理学院弦、引力和宇宙学中心)
International Centre for Theoretical Sciences, Tata Institute of Fundamental Research(国际理论科学中心,塔塔基础研究所);CEICO, FZU-Institute of Physics of the Czech Academy of Sciences(捷克科学院物理研究所FZU-CEICO)