Table 3.
Calculated Thermal Escape Rates in Average over an Effective Area of 3π in Units of s−1 for H Atoms and Heating Efficiencies η of 15% and 40% for Various Stellar XUV Flux Values Normalized to the XUV Flux at 1 AU (Habitable Zone) of the Present Sun for an H-Rich Earth Analog Planet and a Super-Earth with a Size of 2 REarth and a Mass of 10 MEarth
| 1 XUV | 5 XUV | 10 XUV | 50 XUV | 100 XUV | |
|---|---|---|---|---|---|
| H-rich Earth | |||||
| Lth [s−1]: η=15% | ∼5.7×1029 | ∼3×1030 | ∼5×1030 | ∼1.9×1031 | ∼3.2×1031 |
| LthJeans-mod [s−1] | ∼1.5×1029 | ∼1.8×1030 | |||
| LthJeans [s−1] | ∼7.8×1028 | ∼5×1029 | |||
| Lth [s−1]: η=40% | ∼1.4×1030 | ∼7×1030 | ∼1.2×1031 | ∼4×1031 | ∼6×1031 |
| H2-rich Earth | |||||
| Lth [s−1]: η=15% | ∼3×1029 | ∼1.3×1030 | ∼2.0×1030 | ∼1.0×1031 | ∼2.0×1031 |
| LthJeans-mod [s−1] | ∼1.3×1029 | ∼5.7×1029 | |||
| LthJeans [s−1] | ∼5×1028 | ∼2.0×1029 | |||
| H-rich super-Earth | |||||
| Lth [s−1]: η=15% | ∼2.5×1029 | ∼1.8×1030 | ∼4×1030 | ∼1×1031 | ∼2.1×1031 |
| LthJeans-mod [s−1] | ∼1.4×1028 | ∼2×1029 | ∼7×1029 | ∼9.2×1030 | |
| LthJeans [s−1] | ∼1.3×1028 | ∼1.4×1028 | ∼4×1029 | ∼2×1029 | |
| Lth [s−1]: η=40% | ∼1.8×1030 | ∼5.7×1030 | ∼1×1031 | ∼2.5×1031 | ∼4.8×1031 |
| LthJeans-mod [s−1] | ∼1.5×1029 | ∼1.6×1030 | ∼5×1030 | ||
| LthJeans [s−1] | ∼1.4×1029 | ∼6×1029 | ∼1.3×1030 | ||
| H2-rich super-Earth | |||||
| Lth [s−1]: η=15% | ∼1.0×1029 | ∼6×1029 | ∼2.0×1030 | ∼7.0×1030 | ∼1.3×1021 |
| LthJeans-mod [s−1] | ∼8×1027 | ∼3.3×1028 | ∼1.6×1029 | ∼1.3×1030 | |
| LthJeans [s−1] | ∼7×1027 | ∼2.3×1028 | ∼9.0×1028 | ∼4.0×1029 | |
If no blow-off conditions are reached, the most realistic escape rates correspond to LthJeans-mod.