LIM25 - Annecy

Session

Contributed Talks 9: HEDTEX/CIBER/PRIMA

4 juin 2025, 11:10

Laboratoire d'Annecy de Physique Théorique (LAPTh)

Présidents de session

Contributed Talks 9: HEDTEX/CIBER/PRIMA

• Grigory Heaton (California Institute of Technology)
• Maja Lujan Niemeyer (MPA)
• Yun-Ting Cheng (California Institute of Technology)

70. PAH Intensity Mapping with SPHEREx and PRIMA

Yun Ting Cheng

04/06/2025 11:10

Polycyclic aromatic hydrocarbons (PAHs) produce some of the most prominent emission features in the infrared spectra of galaxies. PAHs play a crucial role in the thermal balance and chemistry of the ISM and serve as a good tracers of star formation activity and dust abundance. Ongoing and planned upcoming missions such as SPHEREx and PRIMA will enable the study of multiple PAH features in...

92. Systematic characterization for intensity-galaxy cross-correlations: A case study for the Cosmic Infrared Background Experiment

Grigory Heaton (California Institute of Technology)

04/06/2025 11:30

Cross-correlation between galaxy redshifts and cosmic infrared background (CIB) anisotropies can offer further insight on the source of observed fluctuations as a function of redshift in the three-dimensional structure of the universe. However, such cross-correlations are sensitive to redshift tracer catalog non-uniformity, which can be significant in certain limits and without mitigation. In...

47. HETDEX: A Lyman-alpha Intensity Mapping Survey

Maja Lujan Niemeyer (MPA)

04/06/2025 11:45

The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) is a spectroscopic galaxy survey mapping locations of one million Lyman-alpha-emitting galaxies (LAEs) at z~2-4. It also produces a huge 3D Lyman-alpha map that is ideal for intensity mapping. In this talk we present forecasts for intensity mapping with HETDEX using SIMPLE, a lognormal simulation framework. Because the complex...