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Sökning: onr:"swepub:oai:DiVA.org:su-156643" > An Empirical Study ...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003557naa a2200505 4500
001oai:DiVA.org:su-156643
003SwePub
008180607s2018 | |||||||||||000 ||eng|
024a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1566432 URI
024a https://doi.org/10.3847/1538-4357/aabad92 DOI
040 a (SwePub)su
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Cowperthwaite, P. S.4 aut
2451 0a An Empirical Study of Contamination in Deep, Rapid, and Wide-field Optical Follow-up of Gravitational Wave Events
264 c 2018-04-27
264 1b American Astronomical Society,c 2018
338 a print2 rdacarrier
520 a We present an empirical study of contamination in wide-field optical follow-up searches of gravitational wave sources from Advanced LIGO/Virgo using dedicated observations with the Dark Energy Camera. Our search covered similar to 56 deg(2), with two visits per night, in the i and z bands, followed by an additional set of griz images three weeks later to serve as reference images for subtraction. We achieve 5 sigma point-source limiting magnitudes of i approximate to 23.5 and z approximate to 22.4 mag in the coadded single-epoch images. We conduct a search for transient objects that mimic the i - z color behavior of both red (i-z > 0.5 mag) and blue (i-z < 0 mag) kilonova emission, finding 11 and 10 contaminants, respectively. Independent of color, we identify 48 transients of interest. Additionally, we leverage the rapid cadence of our observations to search for sources with characteristic timescales of approximate to 1 day and approximate to 3 hr, finding no potential contaminants. We assess the efficiency of our search with injected point sources, finding that we are 90% (60%) efficient when searching for red (blue) kilonova-like sources to a limiting magnitude of i less than or similar to 22.5 mag. Using our efficiencies, we derive sky rates for kilonova contaminants of R-red approximate to 0.16 deg(-2) and R-blue approximate to 0.80 deg(-2). The total contamination rate is R-all approximate to 1.79 deg(-2). We compare our results to previous optical follow-up efforts and comment on the outlook for gravitational wave follow-up searches as additional detectors (e.g., KAGRA, LIGO India) come online in the next decade.
650 7a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng
653 a binaries: close
653 a catalogs
653 a gravitational waves
653 a stars: neutron
653 a surveys
700a Berger, E.4 aut
700a Rest, A.4 aut
700a Chornock, R.4 aut
700a Scolnic, D. M.4 aut
700a Williams, P. K. G.4 aut
700a Fong, W.4 aut
700a Drout, M. R.4 aut
700a Foley, R. J.4 aut
700a Margutti, R.4 aut
700a Lunnan, Ragnhildu Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)rlunn
700a Metzger, B. D.4 aut
700a Quataert, E.4 aut
710a Stockholms universitetb Institutionen för astronomi4 org
773t Astrophysical Journald : American Astronomical Societyg 858:1q 858:1x 0004-637Xx 1538-4357
856u http://arxiv.org/pdf/1710.02144
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-156643
8564 8u https://doi.org/10.3847/1538-4357/aabad9

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