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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 5.

Evolution of the spectral index during the flare. Panel (A) shows the normalized MIR light curves, and panel (B) shows the change in the best-fit spectral index. The colors indicate the spectral index with blue colors Δα ≈ 0.0, and red colors Δα ≈ −0.4.

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