Metadata

Summary

Instruments: H1,L1
ADVOK state: ✗ False
False-alarm rate (FAR): —
Astrophysical probability (p_astro) classification: —

Info

Details

Notes: ""

id: 122900

GraceDB

Key fields

Instruments: H1,L1
ADVOK state: ✗ False
False-alarm rate (FAR): —
Astrophysical probability (p_astro) classification: —

Details

Notes: ""

GraceDB events comparison, 1 record
Event identifier	Pipeline	State	GPS time	False-alarm rate (FAR)	Network signal-to-noise ratio	Astrophysical probability	Binary black-hole probability	Binary neutron-star probability	Neutron-star–black-hole probability	Primary mass	Secondary mass
G557853	MBTA	preferred	1424653363.738073	4.11×10⁻⁸	1.21×10¹	0.014	0	0.014	0	1.05×10⁰	1.05×10⁰

id: 451999
label: ""
h1 snr: 10.594169
l1 snr: 5.815671
v1 snr: —
k1 snr: —
g1 snr: —
spin 1z: 0.049997
spin 2z: 0.049786
has ns: 1.0
has remnant: 1.0
has mass gap: 0.0
pipeline has ns: —
pipeline has remnant: —
pipeline has mass gap: —
xml: https://gracedb.ligo.org/api/events/G557853/files/coinc.xml
source classification: https://gracedb.ligo.org/api/events/G557853/files/mbta.p_astro.json
skymap: https://gracedb.ligo.org/api/events/G557853/files/bayestar.multiorder.fits
early warning: ✓ True
search type: low latency
catalog number: ""
catalog version: —
in offline catalog: —
notes: ""
id: 122900
last update: —

Parameter estimation (PE)

Details

Parameter-estimation status: ongoing
Analysts: Empty list
Reviewers: id: 188, name: ethan.payne
Notes: Retracted

Parameter estimation results comparison, 1 record
Result identifier	Inference software	Waveform approximant	Run status	Review status	Analysts	Reviewers	Deprecated
online	bilby	IMRPhenomD	Complete	ongoing	Empty list	Empty list	✗ False

id

441587

config file

id: 26407
path: CIT:/home/pe.o4/public_html/O4c/S250227y/online/bilby/G557853_config_complete.ini
md5 sum: 146325679ee59929d4d56a2e21ad0f92
date last modified: 2025-02-26T17:08:27+11:00
public html: ""

result file

id: 26408
path: CIT:/home/pe.o4/public_html/O4c/S250227y/online/bilby/final_result/G557853_data0_1424653363-7380726_analysis_H1L1_merge_result.hdf5
md5 sum: 1f93514f10e5ecbdd8ede9075b36e3ec
date last modified: 2025-02-28T11:20:50+11:00
public html: ""

pesummary result file

id: 26409
path: CIT:/home/pe.o4/public_html/O4c/S250227y/online/summary/samples/posterior_samples.h5
md5 sum: 03ba58b2eba511512124cf1c39ff5b37
date last modified: 2025-02-28T12:03:26+11:00
public html: ""

bayeswave

Empty list

pesummary page url

https://ldas-jobs.ligo.caltech.edu/~pe.o4/O4c/S250227y/online/summary/home.html

publications

""

notes

Automatic online PE run succeeded When this file is updated add the contents as a comment on the relevant git issue. Instructions can be found [here](https://git.ligo.org/pe/O4/o4b-rota/-/wikis/Review-instructions). Perform a review of the online result and assess if it is sufficent for sending a skymap. Results copied from /home/pe.o4/O4c/S250227y/online/bilby Retracted

id

122900

illustrative result

online

skymap release result

online

safe sampling rate

4096.0

safe lower chirp mass

—

safe upper chirp mass

—

safe lower primary mass

—

safe upper primary mass

—

safe lower secondary mass

—

safe upper secondary mass

—

safe lower mass ratio

0.05

safe upper luminosity distance

—

safe geocent time

—

configurator duration

—

configurator minimum frequency

—

configurator maximum frequency

—

Tests of general relativity (TGR)

Details

Notes: ""

id: 122900
imrct analyses: Empty list
tiger analyses: Empty list
fti analyses: Empty list
pcatgr analyses: Empty list
pseobrd analyses: Empty list
pyring analyses: Empty list
pol analyses: Empty list
mdr analyses: Empty list
sim analyses: Empty list
ssb analyses: Empty list
bhm analyses: Empty list
losa analyses: Empty list
sma analyses: Empty list
echoes cwb analyses: Empty list
residuals analyses: Empty list
unmodeled echoes analyses: Empty list
qnm rational filter analyses: Empty list
modeled echoes analyses: Empty list

Lensing

Companion superevent: Empty list
Singlet analysis identifier: Empty list
id: 122900

Detector characterisation (Detchar)

Details

Notes: ""

id: 122900
recommended detectors: Empty list
dqr results: Empty list
analysts: Empty list
reviewers: Empty list
status: unstarted
recommended duration: —
participating detectors: ""

Extreme matter

Details

Notes: ""

id: 122900
analyses: Empty list

Cosmology

Details

Notes: ""

id: 122900
counterparts: Empty list
runs: Empty list
preferred low latency skymap: https://gracedb.ligo.org/api/events/G557853/files/bayestar.multiorder.fits

Rapid neutron-star parameter estimation (RNP)

id: 122900
runs: Empty list

Catalogue tracking

Details

Notes: ""

id: 118287
pe statuses: Empty list
search statuses: Empty list

Publications

id: 122900
papers: ""

Additional metadata: id

id: 122900

Additional metadata: sname

sname: S250227y

Additional metadata: commit sha

commit sha: 003a038e83405e62cf5408aef1f1babd7b63bbaa

Additional metadata: commit timestamp

commit timestamp: 2025-09-07T17:33:35+10:00

Additional metadata: is current

is current: ✓ True

Additional metadata: schema version

schema version: v3

Additional metadata: raw payload

raw payload

Info

Notes: Empty list
Labels: Empty list
SchemaVersion: v3

Sname

S250227y

GraceDB

ADVOK

✗ False

Events

Item 1

FAR: 4.107867e-08
UID: G557853
XML: https://gracedb.ligo.org/api/events/G557853/files/coinc.xml
Pbbh: 0.0
Pbns: 0.013773226
H1SNR: 10.594169
HasNS: 1.0
L1SNR: 5.815671
Mass1: 1.051209
Mass2: 1.051209
Notes: Empty list
Pnsbh: 0.0
State: preferred
Pastro: 0.013773225999999972
Skymap: https://gracedb.ligo.org/api/events/G557853/files/bayestar.multiorder.fits
Spin1z: 0.049997
Spin2z: 0.049786
GPSTime: 1424653363.738073
Pipeline: MBTA
HasMassGap: 0.0
HasRemnant: 1.0
NetworkSNR: 12.085464
SearchType: low latency
EarlyWarning: ✓ True
SourceClassification: https://gracedb.ligo.org/api/events/G557853/files/mbta.p_astro.json

LastUpdate

2025-09-07 00:33:27.907855

Instruments

H1,L1

Lensing

SingletAnalyses: —
MultipletAnalyses: —

Cosmology

Notes: Empty list
Counterparts: Empty list
PreferredLowLatencySkymap: https://gracedb.ligo.org/api/events/G557853/files/bayestar.multiorder.fits
CosmologyRunsUsingThisSuperevent: Empty list

TestingGR

Notes: Empty list
BHMAnalyses: Empty list
FTIAnalyses: Empty list
MDRAnalyses: Empty list
POLAnalyses: Empty list
SIMAnalyses: Empty list
SMAAnalyses: Empty list
SSBAnalyses: Empty list
LOSAAnalyses: Empty list
IMRCTAnalyses: Empty list
TIGERAnalyses: Empty list
PCATGRAnalyses: Empty list
PYRINGAnalyses: Empty list
PSEOBRDAnalyses: Empty list
EchoesCWBAnalyses: Empty list
ResidualsAnalyses: Empty list
ModeledEchoesAnalyses: Empty list
UnmodeledEchoesAnalyses: Empty list
QNMRationalFilterAnalyses: Empty list

Publications

Papers: Empty list

ExtremeMatter

Analyses: Empty list

CatalogTracking

Notes: Empty list
SearchResultStatuses: Empty list
ParameterEstimationStatuses: Empty list

ParameterEstimation

Notes

Item 1: Retracted

Status

ongoing

Results

Item 1

UID

online

Notes

Item 1: Automatic online PE run succeeded
Item 2: When this file is updated add the contents as a comment on the relevant git issue.
Item 3: Instructions can be found [here](https://git.ligo.org/pe/O4/o4b-rota/-/wikis/Review-instructions).
Item 4: Perform a review of the online result and assess if it is sufficent for sending a skymap.
Item 5: Results copied from /home/pe.o4/O4c/S250227y/online/bilby
Item 6: Retracted

RunStatus

complete

ConfigFile

Path: CIT:/home/pe.o4/public_html/O4c/S250227y/online/bilby/G557853_config_complete.ini
MD5Sum: 146325679ee59929d4d56a2e21ad0f92
DateLastModified: 2025/02/26 17:08:27

Deprecated

✗ False

ResultFile

Path: CIT:/home/pe.o4/public_html/O4c/S250227y/online/bilby/final_result/G557853_data0_1424653363-7380726_analysis_H1L1_merge_result.hdf5
MD5Sum: 1f93514f10e5ecbdd8ede9075b36e3ec
DateLastModified: 2025/02/28 11:20:50

Publications

Empty list

ReviewStatus

ongoing

PESummaryPageURL

https://ldas-jobs.ligo.caltech.edu/~pe.o4/O4c/S250227y/online/summary/home.html

InferenceSoftware

bilby

PESummaryResultFile

Path: CIT:/home/pe.o4/public_html/O4c/S250227y/online/summary/samples/posterior_samples.h5
MD5Sum: 03ba58b2eba511512124cf1c39ff5b37
DateLastModified: 2025/02/28 12:03:26

WaveformApproximant

IMRPhenomD

Analysts

Empty list

Reviewers

Item 1: ethan.payne

SafeSamplingRate

4096.0

IllustrativeResult

online

SafeLowerMassRatio

0.05

SkymapReleaseResult

online

RatesAndPopulations

RnPRunsUsingThisSuperevent: Empty list

DetectorCharacterization

Notes: Empty list
Status: unstarted
Analysts: Empty list
Reviewers: Empty list
DQRResults: Empty list
RecommendedDetectors: Empty list
ParticipatingDetectors: Empty list

Additional metadata: created at

created at: 2026-07-28T12:04:29.940652+10:00

Additional metadata: updated at

updated at: 2026-07-28T12:04:29.940657+10:00

S250227y Copy superevent ID Show full identifier S250227y

Summary

Info

Details

All remaining fields

GraceDB

Key fields

Details

All remaining fields

Parameter estimation (PE)

Details

All remaining fields

Tests of general relativity (TGR)

Details

All remaining fields

Lensing

All remaining fields

Detector characterisation (Detchar)

Details

All remaining fields

Extreme matter

Details

All remaining fields

Cosmology

Details

All remaining fields

Rapid neutron-star parameter estimation (RNP)

All remaining fields

Catalogue tracking

Details

All remaining fields

Publications

All remaining fields

Additional metadata: id

All remaining fields

Additional metadata: sname

All remaining fields

Additional metadata: commit sha

All remaining fields

Additional metadata: commit timestamp

All remaining fields

Additional metadata: is current

All remaining fields

Additional metadata: schema version

All remaining fields

Additional metadata: raw payload

All remaining fields

Additional metadata: created at

All remaining fields

Additional metadata: updated at

All remaining fields

S250227y