Extended Data Fig. 2: Corner plot showing full posterior PDF determined by MCMC. | Nature Astronomy

Extended Data Fig. 2: Corner plot showing full posterior PDF determined by MCMC.

From: Teraelectronvolt gamma-ray emission near globular cluster Terzan 5 as a probe of cosmic ray transport

Extended Data Fig. 2

Panels along the diagonal show histograms of the marginal posterior PDF for each quantity, scaled to a maximum of unity. All other panels show the joint posterior PDF of two quantities; in these panels, colours show the 2D PDF scaled to a maximum of unity, and black contours enclose the marginal 95% confidence interval on each pair of quantities. Points outside the contours show individual randomly-selected MCMC samples that fall outside the 95% confidence interval. The quantities shown, and their units (omitted on the axis labels for reasons of space), are from left to right: log pitch angle scattering rate Kμ[s−1], cosine of angle between magnetic field and line of sight μobs, log CR momentum for which loss and isotropisation times are equal peq[GeV/c], log CR momentum at which the injection distribution cuts off pcut[GeV/c], injection spectral index kp, cosine of the maximum injection angle μ0, log magnetic field strength B [μG], log total CR kinetic luminosity L [erg s−1], and log streaming instability growth rate Γ0[s−1]. In the lower left panel, the grey band shows the relation Kμ = Γ0 with a factor of 3 spread.

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