skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Observations of GW170817 by DESGW and the DECam GW-EM Collaboration

Abstract

On August 17, 2017 LIGO/Virgo detected a binary neutron star via gravitational waves. We observed 70 sq-degrees in the LIGO/Virgo spatial localization with the DECam on the 4m Blanco telescope covering 80% of the nal map. Our group independently discovered an optical counterpart in NGC 4993. We searched our entire imaged region: the object in NGC 4993 was the only viable candidate. Our observations of NGC4993 show complicated morphology but simple star formation history. Our x-ray and radio observations indicate an o-axis jet as afterglow. Our high-cadence optical and infrared spectra show a source that must be described by at least two components, one of which is dominated by the r-process nucleosynthesis elements characteristic of a kilonova. Our modeling of the light curve demonstrates such a model in which 0.05 M of material is ejected from the system. Finally, we discuss the first standard siren measurement of H0.

Authors:
 [1]
  1. Fermilab
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
DESGW; DECam GW-EM
OSTI Identifier:
1437980
Report Number(s):
FERMILAB-CONF-18-070-AE-CD-E
1674019
DOE Contract Number:
AC02-07CH11359
Resource Type:
Conference
Resource Relation:
Conference: IAU Symposium 338, Baton Rouge, LA, USA, 10/16-10/19/2017
Country of Publication:
United States
Language:
English

Citation Formats

Annis, James. Observations of GW170817 by DESGW and the DECam GW-EM Collaboration. United States: N. p., 2018. Web.
Annis, James. Observations of GW170817 by DESGW and the DECam GW-EM Collaboration. United States.
Annis, James. Mon . "Observations of GW170817 by DESGW and the DECam GW-EM Collaboration". United States. doi:. https://www.osti.gov/servlets/purl/1437980.
@article{osti_1437980,
title = {Observations of GW170817 by DESGW and the DECam GW-EM Collaboration},
author = {Annis, James},
abstractNote = {On August 17, 2017 LIGO/Virgo detected a binary neutron star via gravitational waves. We observed 70 sq-degrees in the LIGO/Virgo spatial localization with the DECam on the 4m Blanco telescope covering 80% of the nal map. Our group independently discovered an optical counterpart in NGC 4993. We searched our entire imaged region: the object in NGC 4993 was the only viable candidate. Our observations of NGC4993 show complicated morphology but simple star formation history. Our x-ray and radio observations indicate an o-axis jet as afterglow. Our high-cadence optical and infrared spectra show a source that must be described by at least two components, one of which is dominated by the r-process nucleosynthesis elements characteristic of a kilonova. Our modeling of the light curve demonstrates such a model in which 0.05 M of material is ejected from the system. Finally, we discuss the first standard siren measurement of H0.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2018},
month = {Mon Jan 01 00:00:00 EST 2018}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: