GW trigger S230917af (‘GW 230917E’)

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Raw GW map | Convolved with the Galactic plane

Green spots mark XRT fields observed, red spots mark those planned but not yet observed. Click the image for a larger version.

GW map (HEALPix) | GW map (FITS) | CWB_convolved map (HEALPix) | CWB_convolved map (FITS)

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GW details
Trigger Date:	2023-09-17 at 10:04:17.106 UT
Trigger type:	Unmodelled (‘Burst’)
Central Frequency:	1053.07019 Hz
Duration:	0.014224 s
Fluence:	J m^-2
False alarm rate:	4.604e-7 Hz = 1/25 d
GraceDB:	GraceDB
XRT details
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Externally-detected sources
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All X-ray sources

#	Position	Err ¹	Flag ²	Class ³ (Rank)	Exp (s)	Cat source?	Fdiff (σ)⁴	Near Galaxy?	Near 2MASS	Near SIMBAD	Search /build	Notes
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Notes:

¹ Error is 90% confidence, radius

² G=Good, R=Reasonable, P=Poor (What?)

³ AG = Candidate afterglow, I=Interesting source, U=Uncatalogued X-ray source, K=Known X-ray source.

⁴ For uncatalogued sources this is how many sigma above the historical upper limit the source is, for known sources this is how many sigma above the catalogued flux the source is.