A Dark Energy Camera Search for an Optical Counterpart to the First Advanced LIGO Gravitational Wave Event GW150914

Abstract

We report initial results of a deep search for an optical counterpart to the gravitational wave event GW150914, the first trigger from the Advanced LIGO gravitational wave detectors. We used the Dark Energy Camera (DECam) to image a 102 deg${}^2$ area, corresponding to 38% of the initial trigger high-probability sky region and to 11% of the revised high-probability region. We observed in i and z bands at 4-5, 7, and 24 days after the trigger. The median $5\sigma$ point-source limiting magnitudes of our search images are i=22.5 and z=21.8 mag. We processed the images through a difference-imaging pipeline using templates from pre-existing Dark Energy Survey data and publicly available DECam data. Due to missing template observations and other losses, our effective search area subtends 40 deg${}^2$, corresponding to 12% total probability in the initial map and 3% of the final map. In this area, we search for objects that decline significantly between days 4-5 and day 7, and are undetectable by day 24, finding none to typical magnitude limits of i= 21.5,21.1,20.1 for object colors (i-z)=1,0,-1, respectively. Our search demonstrates the feasibility of a dedicated search program with DECam and bodes well for future research in this emerging field.

arXiv comment6 pages, 1 figure. Updated references. Submitted to ApJL

References in corpus (21)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• Transient Events from Neutron Star Mergers
• Short-Duration Gamma-Ray Bursts
• The Dark Energy Camera
• Robust parameter estimation for compact binaries with ground-based gravitational-wave observations using the LALInference software library
• Planck 2013 results. XI. All-sky model of thermal dust emission
• Effect of a High Opacity on the Light Curves of Radioactively Powered Transients from Compact Object Mergers
• What is the Most Promising Electromagnetic Counterpart of a Neutron Star Binary Merger?
• Radiative Transfer Simulations for Neutron Star Merger Ejecta
• Radio Remnants of Compact Binary Mergers - the Electromagnetic Signal that will follow the Gravitational Waves
• Coherent method for detection of gravitational wave bursts
• The Blanco Cosmology Survey: Data Acquisition, Processing, Calibration, Quality Diagnostics and Data Release
• The long-term evolution of neutron star merger remnants - II. Radioactively powered transients
• The Difference Imaging Pipeline for the Transient Search in the Dark Energy Survey
• Automated Transient Identification in the Dark Energy Survey
• Radioactively Powered Emission from Black Hole-Neutron Star Mergers
• The Dark Energy Survey Data Processing and Calibration System
• First Searches for Optical Counterparts to Gravitational-wave Candidate Events
• Localization of short duration gravitational-wave transients with the early advanced LIGO and Virgo detectors
• A Comprehensive Study of Detectability and Contamination in Deep Rapid Optical Searches for Gravitational Wave Counterparts
• Gravitational wave burst search in the Virgo C7 data

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