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Table 1
Lyα/Lyβ radiance energy ratio.
| Reference | Ratio (σ or %) | Mission/Instrument |
|
|
||
| Quiet Sun | ||
| Dupree & Reeves (1971) | 78 (±35%) | OSO-IV |
| Vernazza & Reeves (1978) | 85 (10) | ATM/HCO |
| this work | 76 (10) | OSO8/LPSP |
| this work | 90 (19) | SOHO/SUMER |
|
|
||
| Active region | ||
| Vernazza & Reeves (1978) | 35 (±35%) | ATM/HCO |
| this work | 66 (9) | OSO8/LPSP |
|
|
||
| Coronal hole | ||
| Vernazza & Reeves (1978) | 90 (±35%) | ATM/HCO |
| this work | 71 (10) | SOHO/SUMER |
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