From 51ed640b483869f8fb6616c0d2f2a76a1e06ab32 Mon Sep 17 00:00:00 2001 From: icweaver Date: Thu, 25 Sep 2025 23:16:17 -0700 Subject: [PATCH] added eht polarization flip press release --- .../stars_and_galaxies/ptiede-polarization.md | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 docs/case_studies/stars_and_galaxies/ptiede-polarization.md diff --git a/docs/case_studies/stars_and_galaxies/ptiede-polarization.md b/docs/case_studies/stars_and_galaxies/ptiede-polarization.md new file mode 100644 index 0000000000..8b88cab9e5 --- /dev/null +++ b/docs/case_studies/stars_and_galaxies/ptiede-polarization.md @@ -0,0 +1,17 @@ +--- +title: "Horizon-scale variability of M87* from 2017–2021 EHT observations" +id: "ptiede-polarization" +description: "See how this team uses Julia to detect an unexpected polarization flip in M87*." +author: "[Paul Tiede](https://github.com/ptiede); [Kazu Akiyama](https://github.com/kazuakiyama); [Andy Nilipour](https://github.com/anilipour); [Rohan Dahale](https://github.com/rohandahale)" +date: 2025-09-04 +--- + +A new result from the team behind [Comrade.jl](@ref) at the [Event Horizon Telescope (EHT) collaboration](https://eventhorizontelescope.org/) has discovered an unexpected flip in the measured polarization of the magnetic fields around the supermassive black hole, M87*. Using Julia, this team was able to detect the magnetic spirals first spiraling one way in 2017, settling in 2018, and then reversing direction in 2021, indicating a dynamic environment with changing polarization patterns. + +**Package: [ptiede/Comrade.jl](https://github.com/ptiede/Comrade.jl)** + +![image](https://eventhorizontelescope.org/sites/g/files/omnuum3116/files/2025-09/triptych_EHT_labeled.jpg) + +See the [EHT press release here](https://eventhorizontelescope.org/new-eht-images-reveal-unexpected-polarization-flips-at-m87), or read more in their paper published in [_Astronomy & Astrophysics_](https://www.aanda.org/articles/aa/pdf/forth/aa55855-25.pdf). + +> 1. The Event Horizon Telescope Collaboration, Akiyama, K., Albentosa-Ruíz, E., Alberdi, A., Alef, W., Carlos Algaba, J., … Matthew Young, R. (2025). [Horizon-scale variability of M87* from 2017--2021 EHT observations](https://www.aanda.org/articles/aa/pdf/forth/aa55855-25.pdf). Astronomy and Astrophysics. [doi:10.1051/0004-6361/202555855](https://www.aanda.org/component/article?access=doi&doi=10.1051/0004-6361/202555855)