Table 2.
Physical parameters of the DM spike.
| ρsp | γ | rsp | α | rt | σ/mχ |
|---|---|---|---|---|---|
| (M⊙ pc−3) | (kpc) | (rISCO) | (cm2g−1) | ||
| 20 | 3/4 | 1.5 | 4 | 200 | 0 |
| 20 | 3/4 | 1.5 | 4 | 200 | 0.2 |
| 20 | 3/4 | 1.5 | 4 | 200 | 0.4 |
| 20 | 3/4 | 1.5 | 4 | 200 | 0.6 |
| 20 | 3/4 | 1.5 | 4 | 200 | 0.8 |
| 20 | 3/4 | 1.5 | 4 | 200 | 1.4 |
| 20 | 3/4 | 1.5 | 4 | 200 | 2.0 |
| 20 | 3/4 | 1.5 | 4 | 200 | 4.0 |
| 20 | 3/4 | 1.5 | 4 | 200 | 8.0 |
| 20 | 1/2 | 1.5 | 4 | 500 | 1.0 |
| 20 | 7/4 | 1.5 | 2 | 200 | 2 ⋅ 10−5 |
Notes. The columns from the left to the right are the following: spike density, ρsp, spike index, γ, spike radius, rsp, truncation index, α, truncation radius, rt, and finally the cross-section per unit mass, σ/mχ. The first row corresponds to the collisionless case, which we nevertheless assume to have the same initial spike profile to enable a more direct comparison. For all our simulations, we have set the profile parameter η to be 1.
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