Constraints on frequency-dependent violations of Shapiro delay from GW150914


Kahya E. O. , DESAI S.

PHYSICS LETTERS B, cilt.756, ss.265-267, 2016 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 756
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.physletb.2016.03.033
  • Dergi Adı: PHYSICS LETTERS B
  • Sayfa Sayıları: ss.265-267

Özet

On 14th September 2015, a transient gravitational wave (GW150914) was detected by the two LIGO detectors at Hanford and Livingston from the coalescence of a binary black hole system located at a distance of about 400 Mpc. We point out that GW150914 experienced a Shapiro delay due to the gravitational potential of the mass distribution along the line of sight of about 1800 days. Also, the near-simultaneous arrival of gravitons over a frequency range of about 200 Hz within a 0.2 s window allows us to constrain any violations of Shapiro delay and Einstein's equivalence principle between the gravitons at different frequencies. From the calculated Shapiro delay and the observed duration of the signal, frequency-dependent violations of the equivalence principle for gravitons are constrained to an accuracy of O(10(-9)). (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.