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Table 4.
Parameters used in calculations of the ionised bubble around COLA1 at z = 6.591 (Sect. 5.2.1).
| Property | Value | Motivation |
|---|---|---|
| fesc, LyC | 15% | (Conservative) Lyα peak separation and blue-to-red flux ratio in local LyC leakers |
| fesc, Lyα |
 % |
Lyα EW calibration, tested at z = 0 − 2.6 (Sobral & Matthee 2018) |
| Qion, Lyα |
 |
Lyα luminosity, fesc, LyC and fesc, Lyα (Sobral & Matthee 2018) |
| Qion, UV |
 |
UV luminosity (no dust correction) and ξion = 1025.4 Hz erg−1 |
| tburst | 107 yr | High Lyα EW (Charlot & Fall 1993) |
| Rs, required | > 0.3 pMpc | Velocity offset ≳250 km s−1 due to expansion of the Universe |
| Rs, max, Lyα |
 pMpc |
Eq. (2), assuming no recombinations and ionisation by the Lyα source of COLA1 |
| Rs, max, UV |
 pMpc |
Eq. (2), assuming no recombinations and ionisation by the UV source of COLA1 |
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