Fwd: GW-CMB 2025 Workshop New Frontiers in Observational Cosmology with Gravitational Waves and Cosmic Microwave Background

Dear colleagues,

We will have a mini-workshop “New Frontiers in Observational Cosmology with Gravitational Waves and Cosmic Microwave Background (GW-CMB 2025)”, on Nov. 6 (Thur) and 7 (Fri) at National Central University (NCU). The workshop web page is

https://indico.phys.sinica.edu.tw/event/361/

You are welcome to attend the workshop. Please complete registration at the above web page, which can be done within 5 minutes.

The program mainly consists of invited talks, but we can accept poster presentations and a few short oral presentations.

Best regards, Yuki Inoue and Masashi Hazumi on behalf of the GW-CMB 2025 organizers

————————————————— Overview of GW-CMB 2025

We live in an era striving to uncover the origin of the Universe through observation. A century after Hubble’s discovery of cosmic expansion, our instruments have advanced dramatically. Through diverse probes—the cosmic microwave background (CMB), galaxy surveys, supernovae, and gravitational waves—the Universe’s history has become a subject of direct measurement rather than theory. Cosmology has entered a stage where precision observations open new physics, and at its frontier lies the search for the stochastic gravitational-wave background (SGWB). Within the next five years, two landmark discoveries may be within reach: (1) primordial gravitational waves from inflation or cosmological phase transitions; and (2) an astrophysical SGWB from compact binary mergers across cosmic time. These goals unite cosmology and gravitational-wave astronomy, driving international efforts such as LIGO–Virgo–KAGRA and the Simons Observatory toward the next breakthrough. In this mini-workshop, we explore the combined impact of GW and CMB observations on the emerging Gravitational-Wave Landscape, the cosmology and astrophysics they enable, and new ideas for cross-correlations with other probes.

Confirmed speakers: • Yi-Kuan Chiang (ASIAA) • Yuji Chinone (KEK) • Shouvik Roy Choudhury (ASIAA) • Giacomo Galloni (Ferrara) • Tomo Goto (NTHU) • Colin Hill (Columbia) • Yuki Inoue (NCU, ASIoP) • Daiki Tanabe (ASIoP) • Keiichi Umetsu (ASIAA) • Viona Wei (NCU) • More to be announced…