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First Mid-infrared Detection and Modeling of a Flare from Sgr A*

Authors: Sebastiano D. von Fellenberg, Tamojeet Roychowdhury, Joseph M. Michail, Zach Sumners, Grace Sanger-Johnson, Giovanni G. Fazio, Daryl Haggard, Joseph L. Hora, Alexander Philippov, Bart Ripperda, Howard A. Smith, S. P. Willner, Gunther Witzel, Shuo Zhang, Eric E. Becklin, Geoffrey C. Bower, Sunil Chandra, Tuan Do, Macarena Garcia Marin, Mark A. Gurwell, Nicole M. Ford, Kazuhiro Hada, Sera Markoff, Mark R. Morris, Joey Neilsen, Nadeen B. Sabha, Braden Seefeldt-Gail

Sebastiano D. von Fellenberg et al 2025 The Astrophysical Journal Letters 979 .

Provider: AAS Journals

Caption: Figure C1.

Posterior of the MCMC chain. Columns left to right show the starting angular position of the emitting region (Ω₀), the width of the Gaussian electron-injection pulse (σ), the time of the maximum electron-injection rate (﹩{t}_{{\rm{\max }}}﹩), the magnetic field strength (B), the total number of injected electrons (﹩\mathrm{log}({N}_{{\rm{e}}})﹩), the flux density of the constant 220 GHz component (ϕ in units of mJy), and the orbit radius of the emitting region in units of the Schwarzschild radius (﹩{R}_{{\rm{flare}}}/{R}_{{\rm{S}}}﹩). Histograms above or to the right of each column show the probability distribution for the corresponding parameter, and each parameter's median value and uncertainty (16% and 84% range) are shown above its histogram plot.

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