3-10 August 2016
Chicago IL USA
US/Central timezone
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A DECam search for kilonova counterparts of the sources detected by ALIGO/AVIRGO

Aug 8, 2016, 6:30 PM
Riverwalk A/B

Riverwalk A/B

Poster Astro-particle Physics and Cosmology Poster Session


James Annis (Fermilab)


We, in conjunction with the Dark Energy Survey, are using the large DECam on the CTIO Blanco 4m telescope for a program of identifying the optical counterparts of the sources of gravitational waves detected by the Advanced Ligo and Advanced Virgo network. The most likely optical counterparts are the fascinating kilonova, the light from decompressing neutron star matter undergoing r-process nucleosynthesis and radioactively decaying. These are likely to be relatively dim, only visible out to a few hundred megaparsecs. This requires imaging hundreds of sq-degrees of ALIGO localization probability areas to locate i~21 to i~22 mag fading objects in a background of supernova, variable stars, and less common transient objects. We present a description of the program, analysis techniques, simulations which show the completeness and purity of our search, and present results from our first season. The aim of the program is the develop the techniques for detecting and obtaining the redshifts for sample of kilonova large enough to pursue a direct Ho measurement.

Primary author

James Annis (Fermilab)

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