Gravity Attracts Us All

Kavli Institute for Astronomy and Astrophysics, Peking University

  • Discussion on Research Topics 01/07/2021

    Attendees Junjie, Hongbo, Rui, Shoulong, Yong, Chang, Xueli, Lijing Agenda Round table Junjie: Foundations of Newtonian gravity III References Chapter...

    January 7, 2021

  • Group Meeting 01/02/2021

    Minghao Guo Interim report: Extended reduced-order surrogate models for scalar-tensor gravity in the strong field and applications to binary pulsars...

    January 2, 2021

  • Prof. Rusen Lu's lunch talk 31/12/2020

    Prof. Dr. Rusen Lu (SHAO) Imaging nearby supermassive black holes and their immediate neighborhoods with millimeter-VLBI Imagingnearby supermassive black holes...

    December 31, 2020

  • Discussion on Research Topics 31/12/2020

    Attendees Hongbo, Rui, Junjie, Yong, Chang, Xueli, Lijing Agenda Round table Hongbo: Linear, adiabatic, nonradial oscillations of spherical stars References...

    December 31, 2020

  • Group Meeting 12/26/2020

    Rui Xu Literature reading: The Dynamics of General Relativity Reference: R. Arnowitt, et al. [arXiv]

    December 26, 2020

  • Prof. Jifeng Liu's lunch talk 25/12/2020

    Prof. Dr. Jifeng Liu (NAOC) 大样本黑洞质量分布 刘慈欣在《人和吞食者》中这样描述曾经的恐龙文明离开地球的星际征程：再向前则会遇到强辐射和大群游荡的黑洞！ 这大群的黑洞，是人类文明离开地球将面对的星旅暗礁，也是目前天文学家热切希望发现并深入研究的对象。 五十余年来，人们在对黑洞等致密天体的研究上已经取得了长足进步，已经在银河系中发现了二十来个黑洞，但是还有一些基本问题没有解答。 例如，理论预言大批存在的3-6个太阳质量的小黑洞为什么观测上缺失？ LIGO引力波实验发现的大黑洞如何通过独立的天文手段来发现？ 这些都有赖于突破传统方法限制来发现更多恒星级黑洞。 综合利用LAMOST监测、Gaia天测卫星数据以及后续视向速度监测，可以发现致密天体并进行质量测定。 报告将介绍最近在这方面的努力，包括LB-1的发现和后续工作。 最终目的是构建大样本致密天体质量分布，来解答恒星死亡黑洞形成等方面的基本问题。 [link] Place: 北京大学物理学院西楼202会议室 Time: 2020.12.25（周五）10:00–11:00...

    December 25, 2020

  • Discussion on Research Topics 24/12/2020

    Attendees Rui, Junjie, Yong, Hongbo, Chang, Xueli, Lijing Agenda Round table Rui: Scalar-tensor teleparallel gravity References Modified teleparallel theories of...

    December 24, 2020

  • Group Meeting 12/19/2020

    Huimei Wang Literature reading: Neutron stars for undergraduates & Anisotropic Spheres in General Relativity Reference: Richard R. Silbar and Sanjay...

    December 19, 2020

  • Discussion on Research Topics 17/12/2020

    Attendees Hongbo, Junjie, Shoulong, Yong, Chang, Xueli, Rui, Lijing Agenda Round table Hongbo: Stellar pulsation References The theory of stellar...

    December 17, 2020

  • Group Meeting 12/12/2020

    Yong Gao Paper presentation: I love Q relation and a summary on neutron star structures Reference: Kent Yagi and Nicolás...

    December 12, 2020