- ...counts
- S refers to the "true" source counts
and not to the source counts in the detection cell.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
- ...B
- We note, in passing, that the
choice of an annular background region instead of circular regions used
by Kashyap et al. (1994) can be justified with the following
reasoning. From Eq. (5 (click here)), we see that if r=3 and
26#26 (this is valid in case of background
annulus, and 27#27 is the integral of the PSF between 0 and
the background outer radius), then 28#28. If r=4
and 29#29 (in case of background circle centered on the
source), then 30#30. Therefore
the SNR of a source in the latter case is lower.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
- ...lines
- The
58#58 detection threshold corresponds to 1 spurious source in
the whole PSPC FOV (Damiani et al. 1997b), and it is typically
used when performing detections on PSPC pointed sequences. In order to
study the effect of the screening procedure on the sources below the usually
adopted detection threshold, we run the wavelet algorithm using the
59#59 threshold.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.