Dr Ling (Lilli) Sun

Research Fellow, Centre for Gravitational Astrophysics, The Australian National University

I am a research fellow at the Centre for Gravitational Astrophysics (CGA) at the Australian National University. I am a member of the Laser Interferometer Gravitational-wave Observatory (LIGO) Scientific Collaboration and the ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav).

My primary research interests are gravitational-wave data analysis and studying fundamental physics from gravitational-wave observations, including:

  • continuous waves from neutron stars

  • gravitational waves from ultralight boson condensates around black holes

  • post-merger process and remnants of binary neutron star mergers

  • ringdown of binary black hole mergers

  • calibration of the gravitational-wave detectors

In particular, I am interested in bringing together the advanced computing and signal processing techniques, gravitational-wave data and theory, as well as the understanding of the instruments for gravitational-wave observation.

News:

  • Jul 22, 2022 Collective filters: a new approach to analyze the gravitational-wave ringdown of binary black-hole mergers (Ma, Mitman, Sun, Deppe, Hébert, Kidder, Moxon, Throwe, Vu, Chen) is posted on arXiv:2207.10870

  • May 27, 2022 The imprint of superradiance on hierarchical black hole mergers (Payne, Sun, Kremer, P. D. Lasky, Thrane) is published in ApJ, 931, 79 (2022), arXiv:2107.11730, [ANU News]

  • May 9, 2022 B. P. Abbott et al. (LIGO-Virgo-KAGRA Collaboration), All-sky search for gravitational wave emission from scalar boson clouds around spinning black holes in LIGO O3 data is published in PRD, Phys. Rev. D 105, 102001 (2022), arXiv:2111.15507

  • Apr 19, 2022 IWAVE — An Adaptive Filter Approach to Phase Lock and the Dynamic Characterisation of Pseudo-Harmonic Waves (Daw, Hollows, Jones, Kennedy, Mistry, Edo, Fays, Sun) is published in Rev. Sci. Instrum. 93, 044502 (2022), arXiv:2109.00104

  • Apr 11, 2022 Invited talk at 2022 APS April meeting (Isaacson Award Session): Hunting for Continuous Gravitational Waves -- Recent Searches and Astrophysical Implications, New York, USA

  • Apr 7, 2022 Impact of calibration uncertainties on Hubble constant measurements from gravitational-wave sources (Huang, Chen, Haster, Sun, Vitale, Kissel) is posted on arXiv:2204.03614

  • Mar 28, 2022 Validating continuous gravitational-wave candidates based on Doppler modulation (Jones, Sun, Carlin, Dunn, Millhouse, Middleton, Meyers, Clearwater, Beniwal, Strang, Vargas, Melatos) is posted on arXiv:2203.14468

  • Mar 3, 2022 Invited talk at Sydney Consortium for Particle Physics and Cosmology (CPPC) seminar: Probing ultralight bosons with black holes and gravitational waves

  • Feb 3, 2022 Contributed talk at the 11th Australasian Conference on General Relativity and Gravitation (online): Ringdown emission patterns of remnant black holes

  • Jan 4, 2022 Angular emission patterns of remnant black holes (Li, Sun, Lo, Payne, Chen) is published in Phys. Rev. D 105, 024016 (2022), arXiv:2110.03116

  • Nov 18, 2021 Invited talk at IPAM Workshop (UCLA): Source inference and parameter estimation in Gravitational Wave Astronomy -- Tracking a continuous gravitational-wave signal with a hidden Markov model [YouTube]

  • Nov 2, 2021 B. P. Abbott et al. (LIGO-Virgo-KAGRA Collaboration), Searches for continuous gravitational waves from young supernova remnants in the early third observing run of Advanced LIGO and Virgo is published in ApJ, 921, 80 (2021), arXiv:2105.11641

  • Nov 1, 2021 Gravitational-wave echoes from spinning exotic compact objects: numerical waveforms from the Teukolsky equation (Xin, Chen, Lo, Sun, Han, Zhong, Srivastava, Ma, Wang, Chen) is published in Phys. Rev. D 104, 104005 (2021), arXiv:2105.12313