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IR STIG Seminar

Infrared Science and Technology Integration Group

DATE

Mar 04, 2024

TIME

3:00 pm EST

COMMUNITY

IR STIG

TYPE

Seminar

The Terahertz Intensity Mapper

Reinier Janssen (NASA JPL), Ian Lowe (University of Arizona), and Jessica Avva Zebrowski (University of Chicago)

Understanding the history of cosmic star formation and its connection to galaxy evolution is one of the most important challenges in modern astrophysics. The Terahertz Intensity Mapper (TIM) is a NASA far-infrared spectroscopy mission designed to measure galaxy evolution by tracing [CII] across a wide swath of cosmological history during a long-duration balloon flight. TIM carries a 240−420 μm R∼250 long-slit spectrometer with >7000 superconducting detectors, coupled to a low-emissivity 2-meter diameter telescope. This talk comprises three sections; in the first section we discuss science expected from the TIM instrument, both as a pathfinder for the new technique of Line Intensity Mapping, and what we can expect from source imaging. In the second section we discuss the payload itself and the unique aspects of a balloon. In the final section we discuss the large-format detector arrays, their performance and readout.

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An illustration of Sun-like star HD 181327 and its surrounding debris disk. The star is at top right. It is surrounded by a far larger debris disk that forms an incomplete ellpitical path and is cut off at right. There’s a huge cavity between the star and the disk. The debris disk is shown in shades of light gray. Toward the top and left, there are finer, more discrete points in a range of sizes. The disk appears hazier and smokier at the bottom. The star is bright white at center, with a hazy blue region around it. The background of space is black. The label Artist's Concept appears at lower left.