Table 4.
AGILE FRB 20220912A bursts coverage and MCAL ULs.
| Burst | MCAL | MCAL | GRID | UL | MCAL | UL |
|---|---|---|---|---|---|---|
| ID | FoV | D.A. | FoV | (3σ) | trigger FAR | 1 ms |
| [erg cm−2] | [evt/hour] | [erg cm−2] | ||||
| B01 | Idle mode | |||||
| B02 | Yes | No | No | – | – | 3.22 × 10−8 |
| B03 | Idle mode | |||||
| B04 | Yes | No | No | – | – | 2.59 × 10−8 |
| B05 | Yes | No | Yes | – | – | 1.84 × 10−8 |
| B06 | Yes | No | No | – | – | 5.15 × 10−8 |
| B07 | No data | |||||
| B08 | Yes | No | No | – | – | 4.22 × 10−8 |
| B09 | Yes | Yes | No | 2.06 × 10−7 | ∼4.0 | – |
| B10 | Yes | Yes | No | 2.04 × 10−7 | ∼4.0 | – |
| B11 | Yes | Yes | No | 2.00 × 10−7 | ∼4.0 | – |
| B12 | Yes | No | No | – | – | 2.17 × 10−8 |
| B13 | Idle mode | |||||
| B14 | Idle mode | |||||
| B15 | Yes | No | Yes | – | – | 1.83 × 10−8 |
| B16 | No data | |||||
Notes. The second and fourth columns report the presence or absence of the source in the field of view (FoV) of the two onboard detectors here considered, respectively. In the third column we report the existence of an MCAL data acquisition at trigger time. MCAL fluence 3σ ULs in 0.4–30 MeV band are evaluated only when no coincident data acquisitions at the burst times is present; MCAL trigger “False Alarm Rate” (FAR) are evaluated when coincident data acquisition is present. ULs (1 ms) refer to the UL fluences that would be required to issue a trigger with the onboard 1 ms MCAL trigger logic timescale (see Ursi et al. 2022). Since there is no evidence of a detection in the acquired triggers, we checked in the 100 days preceding each burst time to estimate the FAR corresponding to each trigger.
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