INTEGRAL Detection of the First Prompt Gamma-Ray Signal Coincident with the Gravitational-wave Event GW170817

  title={INTEGRAL Detection of the First Prompt Gamma-Ray Signal Coincident with the Gravitational-wave Event GW170817},
  author={V. Savchenko and Carlo Ferrigno and Erik Kuulkers and Angela Bazzano and Enrico Bozzo and S{\o}ren Brandt and J{\'e}r{\^o}me Chenevez and T. J.-L. Courvoisier and Roland Diehl and Albert Domingo and Lorraine Hanlon and Elisabeth Jourdain and Andreas von Kienlin and Philippe Laurent and François Lebrun and Alexander A. Lutovinov and Antonio Martin-Carrillo and Sandro Mereghetti and Lorenzo Natalucci and James Rodi and J. P. Roques and Rashid A. Sunyaev and Pietro Ubertini},
  journal={The Astrophysical Journal Letters},
We report the INTernational Gamma-ray Astrophysics Laboratory (INTEGRAL) detection of the short gamma-ray burst GRB 170817A (discovered by Fermi-GBM) with a signal-to-noise ratio of 4.6, and, for the first time, its association with the gravitational waves (GWs) from binary neutron star (BNS) merging event GW170817 detected by the LIGO and Virgo observatories. The significance of association between the gamma-ray burst observed by INTEGRAL and GW170817 is 3.2σ, while the association between the… 

INTEGRAL search for GW counterparts and the GRB170817A/GW170817 detection

AbstractThe INTernational Gamma-ray Astrophysics Laboratory (INTEGRAL) has detected the Short Gamma-Ray Burst (SGRB), GRB170817A with a signal-to-noise ratio of 4.6 and demonstrated its association

Searching for gamma-ray counterparts to gravitational waves from merging binary neutron stars with the Cherenkov Telescope Array

The merger of binary neutron star (BNS) systems are predicted to be progenitors of short gamma-ray bursts (GRBs); the definitive probe of this association came with the recent detection of

Observation of the Second LIGO/Virgo Event Connected with a Binary Neutron Star Merger S190425z in the Gamma-Ray Range

The results of observations of the gravitational-wave (GW) event S190425z recorded by the LIGO/Virgo detectors with the anti-coincidence shield (ACS) of the SPI gamma-ray spectrometer onboard the

INTEGRAL Observations of Gravitational-Wave Counterparts & Future Perspectives: Searching for GBM Un-Triggered SGRB with PICsIT

  • J. RodiA. Bazzano R. Sunyaev
  • Physics
    Proceedings of Gravitational-waves Science&Technology Symposium — PoS(GRASS2018)
  • 2018
The X-ray/gamma-ray mission \emph{INTEGRAL} detected the short GRB170817A and demonstrated its association to a gravitational wave trigger, GW170817. This marks the first time a binary neutron star

Counting on Short Gamma-Ray Bursts: Gravitational-wave Constraints of Jet Geometry

The detections of GW170817 and GRB 170817A revealed that at least some short gamma-ray bursts (sGRB) are associated with the merger of neutron-star compact binaries. The gamma-rays are thought to

INTEGRAL follow-up of the gravitational wave events

We use observations of the INTErnational Gamma-Ray Astrophysics Laboratory (INTEGRAL) to search for gamma-ray and hard X-ray emission associated with the gravitational wave events discovered during

Search for Gravitational Waves Associated with Gamma-Ray Bursts Detected by Fermi and Swift during the LIGO–Virgo Run O3b

We search for gravitational-wave signals associated with gamma-ray bursts (GRBs) detected by the Fermi and Swift satellites during the second half of the third observing run of Advanced LIGO and

A Joint Fermi-GBM and LIGO/Virgo Analysis of Compact Binary Mergers from the First and Second Gravitational-wave Observing Runs

We present results from offline searches of Fermi Gamma-ray Burst Monitor (GBM) data for gamma-ray transients coincident with the compact binary coalescences observed by the gravitational-wave (GW)

The Luminosity Distribution of Short Gamma-Ray Bursts under a Structured Jet Scenario

The joint detection of gravitational wave (GW) and electromagnetic radiation from the binary neutron star merger event GW170817 marks a breakthrough in the field of multi-messenger astronomy. The

Constraints from the time lag between gravitational waves and gamma rays: Implications of GW170817 and GRB 170817A

The Laser Interferometer Gravitational-Wave Observatory (LIGO) has recently discovered gravitational waves (GWs) from its first neutron star-neutron star merger at a distance of $\sim 40$~Mpc from



The Discovery of the Electromagnetic Counterpart of GW170817: Kilonova AT 2017gfo/DLT17ck

During the second observing run of the Laser Interferometer Gravitational-wave Observatory (LIGO) and Virgo Interferometer, a gravitational-wave signal consistent with a binary neutron star

The X-ray counterpart to the gravitational-wave event GW170817

The detection of X-ray emission at a location coincident with the kilonova transient provides the missing observational link between short γ-ray bursts and gravitational waves from neutron-star mergers, and gives independent confirmation of the collimated nature of the γ,ray-burst emission.

The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. I. Discovery of the Optical Counterpart Using the Dark Energy Camera

We present the Dark Energy Camera (DECam) discovery of the optical counterpart of the first binary neutron star merger detected through gravitational-wave emission, GW170817. Our observations

Timing properties of gamma-ray bursts detected by SPI-ACS detector onboard INTEGRAL

We study timing properties of a large sample of gamma-ray bursts (GRB) detected by the Anti-Coincidence Shield (ACS) of the SPI spectrometer of INTEGRAL telescope. We identify GRB-like events in the


In 2009 January, multiple short bursts of soft gamma rays were detected from the direction of the anomalous X-ray pulsar 1E 1547.0−5408 by different satellites. Here we report on the observations

Short-hard gamma-ray bursts

GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence.

This second gravitational-wave observation provides improved constraints on stellar populations and on deviations from general relativity.

GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral.

The association of GRB 170817A, detected by Fermi-GBM 1.7 s after the coalescence, corroborates the hypothesis of a neutron star merger and provides the first direct evidence of a link between these mergers and short γ-ray bursts.


The durations (T90) of 315 gamma-ray bursts (GRBs) detected with Fermi/GBM (8–1000 keV) up to 2011 September are calculated using the Bayesian Block method. We compare the T90 distributions between