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IR STIG Prima Seminar

Infrared Science and Technology Interest Group

IR STIG about IR STIG Prima Seminar

Location

Virtual

Dates

23 February 2026
12:00pm ET / 9:00am PT

Community

IR STIG

Type

Seminar

Magnetic Fields in the Interstellar Medium: Toward the PRIMA Era

Speaker

Susan Clark (Stanford University)

Abstract

Far-infrared polarimetry probes the plane-of-sky magnetic field orientation in the dusty interstellar medium. The interstellar magnetic field affects a diverse range of physics within galaxies, from cosmic ray propagation to star formation, but many questions about Galactic magnetic fields remain open. I will discuss some recent progress and remaining puzzles in our understanding of interstellar magnetic fields. I will highlight a new compilation of SOFIA/HAWC+ data toward star-forming regions that the community can use to interrogate some of these questions on the road to PRIMA.  

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Angled from the upper left corner to the lower right corner is a cone-shaped orange-red cloud known as Herbig-Haro 49/50. This feature takes up about three-fourths of the length of this angle. The upper left end of this feature has a translucent, rounded end. The conical feature widens slightly from the rounded end at the upper right down to the lower right. Along the cone there are additional rounded edges, like edges of a wave, and intricate foamy-like details, as well as a clearer view of the black background of space. In the upper left, overlapping with the rounded end of Herbig-Haro 49/50, is a background spiral galaxy with a concentrated blue center that fades outward to blend with red spiral arms. The background of space is speckled with some white stars and smaller, more numerous, fainter white galaxies throughout.