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Title: A DARK ENERGY CAMERA SEARCH FOR AN OPTICAL COUNTERPART TO THE FIRST ADVANCED LIGO GRAVITATIONAL WAVE EVENT GW150914

Abstract

We report the results of a deep search for an optical counterpart to the gravitational wave (GW) event GW150914, the first trigger from the Advanced LIGO GW detectors. We used the Dark Energy Camera (DECam) to image a 102 deg{sup 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 the i and z bands at 4–5, 7, and 24 days after the trigger. The median 5 σ 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{sup 2}, corresponding to a 12% total probability in the initial map and 3% in 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 demonstratesmore » the feasibility of a dedicated search program with DECam and bodes well for future research in this emerging field.« less

Authors:
; ; ; ; ; ; ; ; ;  [1]; ; ; ; ;  [2]; ;  [3];  [4]; ;  [5] more »; « less
  1. Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States)
  2. Kavli Institute for Cosmological Physics, University of Chicago, Chicago, IL 60637 (United States)
  3. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)
  4. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104 (United States)
  5. Department of Astronomy, University of Illinois, 1002 W. Green Street, Urbana, IL 61801 (United States)
Publication Date:
OSTI Identifier:
22654198
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 823; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2041-8205
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; GRAVITATIONAL WAVES; IMAGES; INTERFEROMETRY; LOSSES; NEUTRONS; NONLUMINOUS MATTER; PROBABILITY; SKY; STARS

Citation Formats

Soares-Santos, M., Annis, J., Buckley-Geer, E., Diehl, H. T., Drlica-Wagner, A., Finley, D. A., Flaugher, B., Frieman, J., Herner, K., Lin, H., Kessler, R., Chen, H., Doctor, Z., Farr, B., Holz, D., Berger, E., Cowperthwaite, P. S., Brout, D., Foley, R. J., Gruendl, R. A., Collaboration: DES Collaboration, and others, and. A DARK ENERGY CAMERA SEARCH FOR AN OPTICAL COUNTERPART TO THE FIRST ADVANCED LIGO GRAVITATIONAL WAVE EVENT GW150914. United States: N. p., 2016. Web. doi:10.3847/2041-8205/823/2/L33.
Soares-Santos, M., Annis, J., Buckley-Geer, E., Diehl, H. T., Drlica-Wagner, A., Finley, D. A., Flaugher, B., Frieman, J., Herner, K., Lin, H., Kessler, R., Chen, H., Doctor, Z., Farr, B., Holz, D., Berger, E., Cowperthwaite, P. S., Brout, D., Foley, R. J., Gruendl, R. A., Collaboration: DES Collaboration, & others, and. A DARK ENERGY CAMERA SEARCH FOR AN OPTICAL COUNTERPART TO THE FIRST ADVANCED LIGO GRAVITATIONAL WAVE EVENT GW150914. United States. doi:10.3847/2041-8205/823/2/L33.
Soares-Santos, M., Annis, J., Buckley-Geer, E., Diehl, H. T., Drlica-Wagner, A., Finley, D. A., Flaugher, B., Frieman, J., Herner, K., Lin, H., Kessler, R., Chen, H., Doctor, Z., Farr, B., Holz, D., Berger, E., Cowperthwaite, P. S., Brout, D., Foley, R. J., Gruendl, R. A., Collaboration: DES Collaboration, and others, and. Wed . "A DARK ENERGY CAMERA SEARCH FOR AN OPTICAL COUNTERPART TO THE FIRST ADVANCED LIGO GRAVITATIONAL WAVE EVENT GW150914". United States. doi:10.3847/2041-8205/823/2/L33.
@article{osti_22654198,
title = {A DARK ENERGY CAMERA SEARCH FOR AN OPTICAL COUNTERPART TO THE FIRST ADVANCED LIGO GRAVITATIONAL WAVE EVENT GW150914},
author = {Soares-Santos, M. and Annis, J. and Buckley-Geer, E. and Diehl, H. T. and Drlica-Wagner, A. and Finley, D. A. and Flaugher, B. and Frieman, J. and Herner, K. and Lin, H. and Kessler, R. and Chen, H. and Doctor, Z. and Farr, B. and Holz, D. and Berger, E. and Cowperthwaite, P. S. and Brout, D. and Foley, R. J. and Gruendl, R. A. and Collaboration: DES Collaboration and others, and},
abstractNote = {We report the results of a deep search for an optical counterpart to the gravitational wave (GW) event GW150914, the first trigger from the Advanced LIGO GW detectors. We used the Dark Energy Camera (DECam) to image a 102 deg{sup 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 the i and z bands at 4–5, 7, and 24 days after the trigger. The median 5 σ 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{sup 2}, corresponding to a 12% total probability in the initial map and 3% in 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.},
doi = {10.3847/2041-8205/823/2/L33},
journal = {Astrophysical Journal Letters},
issn = {2041-8205},
number = 2,
volume = 823,
place = {United States},
year = {2016},
month = {6}
}

Works referencing / citing this record:

An Empirical Study of Contamination in Deep, Rapid, and Wide-field Optical Follow-up of Gravitational Wave Events
journal, April 2018


An Empirical Study of Contamination in Deep, Rapid, and Wide-field Optical Follow-up of Gravitational Wave Events
journal, April 2018