GW trigger S200115j (‘GW 200115’)

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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) | LALInference_convolved map (HEALPix) | LALInference_convolved map (FITS)

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GW details
Trigger Date:	2020-01-15 at 04:23:09.752 UT
Trigger type:	Compact Binary Coalescence
Distance:	340 ± 79 Mpc
Prob_{ContainsNeutronStar}:	1
Prob_EMBright:	1
False alarm rate:	2.095e-11 Hz = 1/1.5e+3 yr
GraceDB:	GraceDB
XRT details
First observation:	T₀ + 118.1 min
Fields planned:	696
Fields observed:	518 [Search]
TargetID range:	7030400—7031478
LVK Prob observed	0.047 (raw), 0.097 (conv)
LVK Prob to observe	2.26e-3 (raw), 4.36e-3 (conv)
XRT sources:	146 (82 verified and public).
Candidate afterglows:	0
Possible afterglows:	9
Unlikely afterglows:	84
Known X-ray sources:	53
Externally-detected sources
There are 11 sources. Show.
AT2020yo: GCN26767	Position not observed.
AT2020yp: GCN26767	Position not observed.
AT2020yq: GCN26767	Position not observed.
GW200115J_src28:	No detection UL=5.83e-3 s^-1
GW200115J_src106:	No detection UL=4.52e-3 s^-1
S200115j_Q1_src1_:	No detection UL=8.05e-3 s^-1
S200115j_Q1_src20:	No detection UL=3.52e-2 s^-1
S200115j_Q1_src39:	No detection UL=2.17e-2 s^-1
S200115j_Q1_src56:	No detection UL=1.15e-2 s^-1
S200115j_Q1_src62:	No detection UL=2.49e-2 s^-1
S200115j_Q1_src78:	No detection UL=2.06e-2 s^-1

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List of possible host galaxies.

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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.