Speaker: Kirit Karkare (Boston University) – Title: On-Chip Millimeter-Wave Spectroscopy for Line Intensity Mapping: SuperSpec and SPT-SLIM
February 12 @ 4:00 pm - 5:00 pm
Research Progress Meeting
Date: February 12, 2026
Time: 4:00- 5:00 pm
Location: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]
Speaker: Kirit Karkare, Boston University
Title: On-Chip Millimeter-Wave Spectroscopy for Line Intensity Mapping: SuperSpec and SPT-SLIM
Abstract: Answering outstanding questions in cosmology – such as understanding the nature of inflation, dark energy, and reionization – requires observations of ever-increasing volumes of the universe. In this talk I will discuss how we can use line intensity mapping (LIM) of far-IR emission lines to measure large volumes at high redshift. This technique is enabled by advances in millimeter-wave spectrometer technology. I will present two on-chip spectrometer projects: SuperSpec, which pioneered the concept and was deployed to the Large Millimeter Telescope, and SPT-SLIM, a pathfinder LIM experiment at the South Pole. Both projects saw first light in 2025. I will discuss what we’re learning from their first observations and outline the path towards large, dense focal planes with the sensitivity required for next-generation cosmology.
https://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09
Meeting ID: 988 5432 2464
Passcode: 142239