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Table 1
Comparison of different γ-localization methods in the 200–2000 keV band.
| Method | Accuracy | Comments | E-range (keV) | GRBs (1 yr−1) | Example | Sensitivity (phcm−2 s−1) |
|---|---|---|---|---|---|---|
| Triangulation | Arcsec | Cheap, all-sky | 10–1000 | 20–50 | IPN | 2.0 |
| Relative rates | Degrees | Cheap, half sky | 8–500 | 300 | BATSE, GBM | 1.0, 3.0 |
| Coded-mask | Arcmin | Small FOV | 10–200 | 10–100 | Swift/BAT, ISGRI | 1.2, 0.6 |
| Photon-by-Photon | Degrees | Heavy, big | 100–2000 | 10–30 | COMPTEL | 180 |
Notes. The sensitivity column reports the peak flux threshold over the 1–1000 keV band (for a band function with α = −1, Epeak = 300 keV, β = −2) of the listed detectors (Band 2003; Bošnjak et al. 2014).
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