PKS 2155-304: one-zone SSC fit, August 2013

Question

Fit a one-zone SSC model to the SED of PKS 2155-304 observed between 9 and 23 August 2013

Answer

Homogeneous one-zone SSC, z = 0.116, EBL absorption included, 141 points. Best fit:

Doppler factor δ
23.0 ± 5.2
Magnetic field B
≈ 29 mG
Region size R
≈ 1.6×1017 cm
Electron index p
2.12 ± 0.22

Fermi-LAT, NuSTAR, Swift XRT and UVOT, and SMARTS data, all within 9–23 August 2013.

PKS 2155-304 · one-zone SSC fitdata · best fit · samples
Spectral energy distribution of PKS 2155-304, 9–23 August 2013, with the one-zone SSC best fit and posterior samples
PlotPDF reportBest-fit CSV

How this answer was made

The modeling agent fitted a homogeneous one-zone SSC model to the 141 data points taken in the requested window. It uses neural networks trained on radiative simulations, which reproduce the numerical results with high accuracy and are much faster to evaluate. The answer includes the fit plot with posterior samples, a PDF report and a best-fit CSV.

More on this part of AstroGenesis: SED modeling with neural networks trained on radiative simulations.

Other examples

Ask about your own source

Ask in plain language: literature, data, or a model fit. Free plan: 10 messages per day.