Table 4.
ON/OFF analysis (input and output parameters) for the FOXSI-3 observations and FOXSI-2 background.
| D105 | ||||||
|---|---|---|---|---|---|---|
| NON | NOFF | α | P(H0) | Sb | λ2σ | F2σ [s−1 cm−2 keV−1] |
| 2 | 1 | 16.1 | 0.89 | 0.14 | 5.43 | 9.6 × 10−4 |
Notes. The ON/OFF Li-Ma method was applied exclusively to D105 using solar observations from FOXSI-3 and background measurements from FOXSI-2. NON are the number of events observed by D105 during the entire 6.49 minutes of observation of FOXSI-3. NOFF are the counts register by D105 during the 24.2 s the attenuators were activated during FOXSI-2. α is calculated according to Eq. (4). P(H0|NON, NOFF) is the probability of the null hypothesis (H0, for NON, NOFF, and α given). Sb is the Bayesian significance for the existence of a hypothetical quiet-Sun signal s. λ2σ is the upper limit (in counts) with a 2σ confidence level for such a hypothetical source s. F2σ is the same upper limit, but in units of s−1 cm−2 keV−1.
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