Mining the Rainbow: Cosmology in Multicolour via Line Intensity Mapping Surveys
IFPU
30 June-4 July 2025
Astronomical observations across the electromagnetic spectrum have, over recent decades, provided strong empirical support for the standard cosmological model. However, tensions between different observational probes hint at potential challenges to this model. Current and upcoming surveys spanning radio, far infrared, microwave, optical, and X-ray frequencies are set to deepen our understanding of key cosmological questions, such as the nature of dark matter, neutrino masses, and missing baryons. These surveys will also offer new insights into the state of baryonic matter in and around galaxies and galaxy clusters. A novel approach to observing the Universe, known as Line Intensity Mapping (LIM), is gaining attention. LIM detects specific spectral lines (e.g., HI 21-cm, CII, CO, OIII, OVII, and OVIII) without isolating individual sources, instead aggregating photons within a broad resolution element. This method allows for mapping the distribution of sources with lower resolution but over larger fields of view. Radio surveys like MeerKAT and the upcoming SKA-mid, as well as far-infrared, millimeter and X-ray efforts like COMAP, CONCERTO, TIME, FYST, EXCLAIM and eROSITA, are pioneering LIM. This meeting will convene experts to explore optimal strategies for utilizing these surveys to address the major cosmological questions ahead.
Meeting website: https://sites.google.com/view/mining-the-rainbow/home
Organisers:
- Suman Majumdar (Indian Institute of Technology Indore)
- Priyanka Singh (Indian Institute of Technology Indore)
- Matteo Viel (SISSA)
Participants:
- Suman Majumdar (Indian Institute of Technology Indore, India)
- Guochao Sun (Northwestern University, USA)
- Andrei Mesinger (SNS, Pisa, Italy)
- Debanjan Sarkar (McGill University, Canada)
- Anirban Roy (New York University, USA)
- Azadeh Moradinezhad (Laboratoire d’Annecy-le-Vieux de Physique Théorique, France)
- Anjan Ananda Sen (Jamia Millia Islamia, India)
- Tirthankar Roy Choudhury (National Centre for Radio Astrophysics-Tata Institute of Fundamental Research, India)
- Zhaoting Chen (Royal Observatory, Edinburgh, UK)
- Raghunath Ghara (Indian Institute of Science Education and Research Kolkata, India)
- Anne Hutter (University of Vienna, Austria)
- Marta Spinelli (Observatoire de la Côte d’Azur, Nice)
- Mario Santos (University of Western Cape, South Africa)
- Caroline Heneka (University of Heidelberg, Germany)
- Francisco Villaescusa-Navarro (Simons Foundation, New York, USA)