Table 3.
XMM-Newton 2σ upper limits on the number of counts, count rate (CR), and the X-ray flux of the LHAASO source for varying source apertures, energy bands, and source emission models.
| Radius | Nsrc, 0.5 − 2 | CR0.5 − 2 | F0.5 − 2, abs | F0.5 − 2, unabs | Nsrc, 2 − 7 | CR2 − 7 | F2 − 7, abs | F2 − 7, unabs |
|---|---|---|---|---|---|---|---|---|
| [arcmin] | [cts] | [cts s−1] | [erg cm−2 s−1] | [erg cm−2 s−1] | [cts] | [cts s−1] | [erg cm−2 s−1] | [erg cm−2 s−1] |
| 0.5 | 10.214 | 5.940e−4 | 1.69e−14 | 2.36e−15 | 10.014 | 6.391e−4 | 1.28e−14 | 1.04e−14 |
| 3 | 47.415 | 3.070e−3 | 8.76e−14 | 1.22e−14 | 47.892 | 3.380e−3 | 6.77e−14 | 5.51e−14 |
| 6 | 88.527 | 6.464e−3 | 1.84e−13 | 2.57e−14 | 90.055 | 7.221e−3 | 1.45e−13 | 1.18e−13 |
| 16 | ... | ... | 4.9e−13 | 6.9e−14 | ... | ... | 3.8e−13 | 3.15e−13 |
Notes. The fluxes are estimated assuming that the source spectrum can be described by a PL with a photon index of 2.0, either on the other side of the Galaxy (i.e., absorbed by the local Galactic column density) or local (unabsorbed). In the absorbed case, the corresponding flux is the equivalent unabsorbed source flux. Upper limits for the radius of 16 arcmin are 6 arcmin scaled to the angular size of the UHE source extension.
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