Test of the Weak Equivalence Principle using LIGO observations of GW150914 and Fermi observations of GBM transient 150914

Abstract

About 0.4s after the Laser Interferometer Gravitational-Wave Observatory (LIGO) detected a transient gravitational-wave (GW) signal GW150914, the Fermi Gamma-ray Burst Monitor (GBM) also found a weak electromagnetic transient (GBM transient 150914). Time and location coincidences favor a possible association between GW150904 and GBM transient 150914. Under this possible association, we adopt Fermi's electromagnetic (EM) localization and derive constraints on possible violations of the Weak Equivalence Principle (WEP) from the observations of two events. Our calculations are based on four comparisons: (1)The first is the comparison of the initial GWs detected at the two LIGO sites. From the different polarizations of these initial GWs, we obtain a limit on any difference in the parametrized post-Newtonian (PPN) parameter $\Delta \gamma \lesssim 10^{-10}$. (2) The second is a comparison of GWs and possible EM waves. Using a traditional super-Eddington accretion model for GBM transient 150914, we again obtain an upper limit $\Delta \gamma \lesssim 10^{-10}$. Compared with previous results for photons and neutrinos, our limits are five orders of magnitude stronger than those from PeV neutrinos in blazar flares, and seven orders stronger than those from MeV neutrinos in SN1987A. (3) The third is a comparison of GWs with different frequencies in the range [35 Hz, 250 Hz]. (4) The fourth is a comparison of EM waves with different energies in the range [1 keV, 10 MeV]. These last two comparisons lead to an even stronger limit, $\Delta \gamma \lesssim 10^{-8}$. Our results highlight the potential of multi-messenger signals exploiting different emission channels to strengthen existing tests of the WEP.

arXiv comment9 pages, 4 figures, accepted for publication in Physics Letters B

References in corpus (33)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• The Confrontation between General Relativity and Experiment
• Monitoring stellar orbits around the Massive Black Hole in the Galactic Center
• The Confrontation between General Relativity and Experiment
• The Fermi Gamma-Ray Burst Monitor
• Gamma-Ray Bursts as the Death Throes of Massive Binary Stars
• Properties of the Binary Black Hole Merger GW150914
• Mass models of the Milky Way
• GW150914: The Advanced LIGO Detectors in the Era of First Discoveries
• Super-critical Accretion Flows around Black Holes: Two-dimensional, Radiation-pressure-dominated Disks with Photon-trapping
• A Global Three Dimensional Radiation Magneto-hydrodynamic Simulation of Super-Eddington Accretion Disks
• Fermi GBM Observations of LIGO Gravitational Wave event GW150914
• GW150914: Implications for the stochastic gravitational wave background from binary black holes
• Numerical simulations of super-critical black hole accretion flows in general relativity
• Localization and broadband follow-up of the gravitational-wave transient GW150914
• Electromagnetic Counterparts to Black Hole Mergers Detected by LIGO
• Short Gamma-Ray Bursts from the Merger of Two Black Holes
• Kinematics of the stellar halo and the mass distribution of the Milky Way using BHB stars
• INTEGRAL upper limits on gamma-ray emission associated with the gravitational wave event GW150914
• Testing Einstein's Equivalence Principle with Fast Radio Bursts
• Fast radio bursts and their gamma-ray or radio afterglows as Kerr-Newman black hole binaries
• Ultrafast Outflows from Black Hole Mergers with a Mini-Disk
• Explosive Chromospheric Evaporation in a Circular-ribbon Flare
• Cosmic Transients Test Einstein's Equivalence Principle out to GeV Energies
• Constraints on frequency-dependent violations of Shapiro delay from GW150914
• Testing the equivalence principle and Lorentz invariance with PeV neutrinos from blazar flares
• Limits on Einstein's Equivalence Principle from the first localized Fast Radio Burst FRB 150418
• Gravitational waves from merging compact binaries
• Testing Einstein's Weak Equivalence Principle With Gravitational Waves
• Swift follow-up of the Gravitational Wave source GW150914
• Tests of the Einstein Equivalence Principle using TeV Blazars
• Modeling the afterglow of the possible Fermi-GBM event associated with GW150914
• Is the GW150914-GBM really associated with the GW150914?

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