Observations of GW170817 by DESGW and the DECam GW-EM Collaboration
作者: James Annis
作者单位: 1Fermi National Accelerator Laboratory Batavia , Illinois , USA email: annis@fnal.gov
刊名: Proceedings of the International Astronomical Union, 2019, Vol.13 (S338), pp.72-79
来源数据库: Cambridge University Press Journal
DOI: 10.1017/S1743921318000935
原始语种摘要: 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 final 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 off-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...
全文获取路径: Cambridge U Press  (合作)

  • 喷射 充填料
  • counterpart 对称物
  • Virgo 室女星座
  • observed 观察到的
  • region 地域
  • viable 有生活力的
  • afterglow 余光军
  • cadence 步调信号
  • formation 建造
  • material 充填料
  • ejected 充填料