Kavli Affiliate: Linhua Jiang
| First 5 Authors: Linhua Jiang, Shu Wang, Bing Zhang, Nobunari Kashikawa, Luis C. Ho
| Summary:
In Jiang et al., we detected a bright flash (hereafter GN-z11-flash) that
appeared as compact continuum emission during our Keck MOSFIRE observations of
the galaxy GN-z11 at z ~ 11. We performed a comprehensive analysis of the
origin of the flash using all available information and our current
understanding of known man-made objects or moving objects in the solar system.
We found that GN-z11-flash was likely a rest-frame UV flash associated with a
long gamma-ray burst (GRB) from GN-z11. Recently, Steinhardt et al.,
Michalowski et al., and Nir et al. reported that GN-z11-flash was more likely
from a satellite. While one cannot completely rule out the possibility of
unknown satellites (or debris), we find that either the chance probabilities of
being a satellite estimated by these authors have been largely overestimated or
their identified satellites have been ruled out in our original analysis. Our
new calculations show that the probability of GN-z11-flash being a satellite is
still lower than that of it being a signal originated from GN-z11.
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