24 research outputs found

    FIRST SEARCHES FOR OPTICAL COUNTERPARTS TO GRAVITATIONAL-WAVE CANDIDATE EVENTS

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    During the LIGO and Virgo joint science runs in 2009-2010, gravitational wave (GW) data from three interferometer detectors were analyzed within minutes to select GW candidate events and infer their apparent sky positions. Target coordinates were transmitted to several telescopes for follow-up observations aimed at the detection of an associated optical transient. Images were obtained for eight such GW candidates. We present the methods used to analyze the image data as well as the transient search results. No optical transient was identified with a convincing association with any of these candidates, and none of the GW triggers showed strong evidence for being astrophysical in nature. We compare the sensitivities of these observations to several model light curves from possible sources of interest, and discuss prospects for future joint GW-optical observations of this type

    Premature childbirth: Social and behavioural risks in Singapore

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    Journal of Biosocial Science254465-472JBSL

    Menstrual bleeding patterns in Norplant®-2 implant users

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    10.1016/0010-7824(96)00140-0Contraception54291-95CCPT

    A five-year analysis of menstrual bleeding patterns in Norplant users

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    British Journal of Family Planning211 SUPPL.11-13BJFP

    Obstetrical outcome with increasing maternal age

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    Journal of Biosocial Science262261-267JBSL

    Ethnicity and obstetric performance in Singapore

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    Journal of Biosocial Science272151-162JBSL

    Relationships between cigarette smoking, blood pressure and serum lipids in the Singapore general population

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    International Journal of Epidemiology224637-643IJEP

    Corneal arcus and cardiovascular risk factors in Asians in Singapore

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    International Journal of Epidemiology213473-477IJEP
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