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Optical Follow-up of Gravitational-wave Events during the Second Advanced LIGO/VIRGO Observing Run with the DLT40 Survey
Vise andre og tillknytning
Rekke forfattare: 102019 (engelsk)Inngår i: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 875, nr 1, artikkel-id 59Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We describe the gravitational-wave (GW) follow-up strategy and subsequent results of the Distance Less Than 40 Mpc survey (DLT40) during the second science run (O2) of the Laser Interferometer Gravitational-wave Observatory and Virgo collaboration (LVC). Depending on the information provided in the GW alert together with the localization map sent by the LVC, DLT40 would respond promptly to image the corresponding galaxies selected by our ranking algorithm in order to search for possible electromagnetic (EM) counterparts in real time. During the LVC O2 run, DLT40 followed 10 GW triggers, observing between similar to 20 and 100 galaxies within the GW localization area of each event. From this campaign, we identified two real transient sources within the GW localizations with an appropriate on-source time-one was an unrelated SN Ia (SN 2017cbv), and the other was the optical kilonova, AT 2017fgo/SSS17a/DLT17ck, associated with the binary neutron star (BNS) coalescence GW170817 (a.k.a gamma-ray burst GRB 170817A). We conclude with a discussion of the DLT40 survey's plans for the upcoming LVC O3 run, which include expanding our galaxy search fields out to D approximate to 65 Mpc to match the LVC's planned three-detector sensitivity for BNS mergers.

sted, utgiver, år, opplag, sider
2019. Vol. 875, nr 1, artikkel-id 59
Emneord [en]
gravitational waves, methods: observational, supernovae: general
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-169040DOI: 10.3847/1538-4357/ab0e06ISI: 000464984900013OAI: oai:DiVA.org:su-169040DiVA, id: diva2:1319037
Tilgjengelig fra: 2019-05-29 Laget: 2019-05-29 Sist oppdatert: 2019-05-29bibliografisk kontrollert

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