GW trigger S190930t (‘GW 190930B’)

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Raw GW map | Convolved with 2MPZ

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) | bayestar_convolved map (HEALPix) | bayestar_convolved map (FITS)

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GW details
Trigger Date:	2019-09-30 at 14:34:07.685 UT
Trigger type:	Compact Binary Coalescence
Distance:	108 ± 37 Mpc
Prob_{ContainsNeutronStar}:	1
Prob_EMBright:	0
False alarm rate:	1.543e-8 Hz = 1/2.1 yr
GraceDB:	GraceDB
XRT details
First observation:	T₀ + 127.4 min
Fields planned:	800
Fields observed:	747 [Search]
TargetID range:	7021540—7022339
LVK Prob observed	5.53e-3 (raw), 0.029 (conv)
LVK Prob to observe	4.18e-4 (raw), 1.67e-3 (conv)
XRT sources:	16 (16 verified and public).
Candidate afterglows:	0
Possible afterglows:	0
Unlikely afterglows:	5
Known X-ray sources:	11
Externally-detected sources
There are 13 sources. Show.
AT2019rpn:	No detection UL=5.28e-3 s^-1
Swift J221951-484240:	No detection UL=2.64e-4 s^-1
Swift J074758.9+431820:	Source 12.
Swift_J201009-211740:	No detection UL=1.08e-2 s^-1
Swift_J210547-394052:	No detection UL=4.17e-3 s^-1
Swift_J235752-311015:	No detection UL=4.10e-3 s^-1
Swift_J085203+533236:	No detection UL=3.80e-3 s^-1
Swift_J201009-211740:	No detection UL=4.98e-3 s^-1
Swift_J224718-581442:	Source 28.
Swift_J074200+184400:	No detection UL=4.61e-3 s^-1
Swift_J205354-252821:	No detection UL=5.18e-3 s^-1
Swift_J1058.3+4107:	No detection UL=4.92e-3 s^-1
S190930t_Q1_src33:	No detection UL=2.51e-2 s^-1

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Galaxy search.

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.