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공공누리This item is licensed Korea Open Government License

Title
Implementation and testing of the first prompt search for gravitational wave transients with electromagnetic counterparts
Author(s)
J.Abadieetal강궁원장행진
Publication Year
2012-03-29
Abstract
Aims.Atransientastrophysicaleventobservedinbothgravitationalwave(GW)andelectromagnetic(EM)channelswouldyieldrichscientificrewards.AfirstprograminitiatingEMfollow-upstopossibletransientGWeventshasbeendevelopedandexercisedbytheLIGOandVirgocommunityinassociationwithseveralpartners.Inthispaper,wedescribeandevaluatethemethodsusedtopromptlyidentifyandlocalizeGWeventcandidatesandtorequestimagesoftargetedskylocations.

Methods.Duringtwoobservingperiods(Dec.17,2009toJan.8,2010andSep.2toOct.20,2010),alow-latencyanalysispipelinewasusedtoidentifyGWeventcandidatesandtoreconstructmapsofpossibleskylocations.AcatalogofnearbygalaxiesandMilkyWayglobularclusterswasusedtoselectthemostpromisingskypositionstobeimaged,andthisdirectionalinformationwasdeliveredtoEMobservatorieswithtimelagsofaboutthirtyminutes.AMonteCarlosimulationhasbeenusedtoevaluatethelow-latencyGWpipeline’sabilitytoreconstructsourcepositionscorrectly.

Results.Forsignalsnearthedetectionthreshold,ourlow-latencyalgorithmsoftenlocalizedsimulatedGWburstsignalstotensofsquaredegrees,whileneutronstar/neutronstarinspiralsandneutronstar/blackholeinspiralswerelocalizedtoafewhundredsquaredegrees.Localizationprecisionimprovesformoderatelystrongersignals.Thecorrectskylocationofsignalswellabovethresholdandoriginatingfromnearbygalaxiesmaybeobservedwith~50%orbetterprobabilitywithafewpointingsofwide-fieldtelescopes.
Keyword
gravitationalwaves; Electromagneticcounterparts; Observation
Journal Title
Astronomyandastrophysics
Citation Volume
539
ISSN
0004-6361
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Appears in Collections:
7. KISTI 연구성과 > 학술지 발표논문
URI
https://repository.kisti.re.kr/handle/10580/14012
http://www.ndsl.kr/ndsl/search/detail/article/articleSearchResultDetail.do?cn=NART63248897
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