Table 2 Distances in kpc from the galactic center corresponding to high biological hazard for life on a fully exposed planetary surface, during the AGN phase of Sgr A*.

From: The habitability of the Milky Way during the active phase of its central supermassive black hole

 

“complex” life

prokaryotes

L = L Edd, τ = 0

13.3

1.33

L = 10% L Edd, τ = 0

4.20

0.42

L = 1% L Edd, τ = 0

1.33

0.13

L = L Edd, τ = 1

8.08

0.81

L = 10% L Edd, τ = 1

2.55

0.25

L = 1% L Edd , τ = 0

0.81

0.081

  1. The first column is the lethal distance for eukaryotes and multicellular organisms (“complex” life), the second is for prokaryotes. Each line was computed for different combinations of the supermassive black hole luminosity and attenuation by the AGN torus τ.