Two recent short-author papers involving U²GRC researchers address complementary challenges in gravitational-wave astronomy: searching for unusual long-duration signals and separating astrophysical information from transient detector noise.

Long-duration GW Searches for Sub-solar NSs and Superkilonovae using CoCoA, by Abby Tejera, Divyajyoti, Alessandra Corsi, Yossef Zenati, Robert Coyne, and Logan Cote, studies possible gravitational-wave signatures from mergers involving sub-solar-mass neutron stars. Such signals could last hundreds to thousands of seconds and may not be well captured by standard waveform templates. The authors explore how the Cross-Correlation Algorithm (CoCoA) could support targeted follow-up searches, including searches prompted by candidate gravitational-wave events or electromagnetic observations of supernovae. INSPIRE record.

Joint inference for gravitational-wave signal and noise glitch: Method and application, by Shun Yin Cheung, Rhiannon Udall, Derek Davis, Paul D. Lasky, and Eric Thrane, introduces bilby_glitch, a pipeline for modeling gravitational-wave signals and detector glitches at the same time. Tests with simulated and real data show how conclusions about black-hole spin can depend on both the waveform model and the treatment of detector noise. The work provides a flexible framework for more reliable inference when signals overlap with non-Gaussian noise transients. INSPIRE record.

Together, the studies highlight the close connection between astrophysical modeling, search methods, and detector characterization. They also illustrate the breadth of U²GRC contributions to extracting robust science from gravitational-wave observations.