Constraints on the VHE counterpart of two binary black hole mergers observed by the MAGIC and CTAO LST-1 telescopes

Abstract

We present very-high-energy gamma-ray observations of two binary black hole merger candidates, GW240615_113620 and GW241125_010116, performed with the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) telescopes and the first Large-Sized Telescope of the Cherenkov Telescope Array Observatory's (CTAO LST-1). GW240615_113620 was the best localized event of the fourth observing run of the LIGO-Virgo-KAGRA gravitational waves interferometers. GW241125_010116 was temporally and spatially coincident with a sub-threshold short-duration burst detected with the Swift-Burst Alert Telescope (BAT), the Swift-X-Ray Telescope (XRT) and the Einstein Probe Follow-up X-ray Telescope (FXT). We observed the two events in stereoscopic mode, taking advantage of the improved sensitivity of joint MAGIC+LST-1 observations. No detection was achieved in the GeV-TeV gamma-ray band for any of the two sources. The unfavourable observing conditions of both events posed a challenge for a standard analysis and therefore a non standard analysis was necessary for both objects. Owing to the small localization area and the association with a GRB-like burst respectively, these events represented an unprecedented opportunity to study in details the electromagnetic emission from binary black holes merger events and, in particular, we discussed two theoretical models that predict a detectable gamma-ray emission and the possible future applications.

Published version. Corresponding authors: Andrea Simongini, Juan Jiménez Quiles, Mario Pecimotika, Monica Seglar-Arroyo

References in corpus (46)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Multi-messenger Observations of a Binary Neutron Star Merger
• Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
• Advanced LIGO
• GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run
• An Ordinary Short Gamma-Ray Burst with Extraordinary Implications: Fermi-GBM Detection of GRB 170817A
• INTEGRAL Detection of the First Prompt Gamma-Ray Signal Coincident with the Gravitational Wave Event GW170817
• Observation of gravitational waves from two neutron star-black hole coalescences
• The major upgrade of the MAGIC telescopes, Part II: A performance study using observations of the Crab Nebula
• Gravitational waves from scattering of stellar-mass black holes in galactic nuclei
• A Global Three Dimensional Radiation Magneto-hydrodynamic Simulation of Super-Eddington Accretion Disks
• Candidate Electromagnetic Counterpart to the Binary Black Hole Merger Gravitational Wave Event S190521g
• The unWISE Catalog: Two Billion Infrared Sources from Five Years of WISE Imaging
• Background Modelling in Very-High-Energy gamma-ray Astronomy
• Hierarchical mergers of stellar-mass black holes and their gravitational-wave signatures
• Observation of Gravitational Waves from the Coalescence of a $2.5\text{-}4.5M_{\odot }$ Compact Object and a Neutron Star
• The Pair-Instability Mass Gap for Black Holes
• GW231123: a Binary Black Hole Merger with Total Mass 190-265 $M_{\odot }$
• GLADE+: An Extended Galaxy Catalogue for Multimessenger Searches with Advanced Gravitational-wave Detectors
• The Million Quasars (Milliquas) Catalogue, v8
• Gammapy: A Python package for gamma-ray astronomy
• Gaia Data Release 3: The extragalactic content
• Binary Black Hole Merger Rates in AGN Disks versus Nuclear Star Clusters: Loud beats Quiet
• Quaia, the Gaia-unWISE Quasar Catalog: An All-Sky Spectroscopic Quasar Sample
• Outflow Bubbles from Compact Binary Mergers Embedded in Active Galactic Nuclei: Cavity Formation and the Impact on Electromagnetic Counterparts
• TeV gamma-ray observations of the binary neutron star merger GW170817 with H.E.S.S
• MAGIC observations of the nearby short gamma-ray burst GRB 160821B
• Observable signature of merging stellar-mass black holes in active galactic nuclei
• Can stellar-mass black hole growth disrupt disks of active galactic nuclei? The role of mechanical feedback
• Observations of the Crab Nebula and Pulsar with the Large-Sized Telescope Prototype of the Cherenkov Telescope Array
• IceCube search for neutrinos coincident with gravitational wave events from LIGO/Virgo run O3
• The Million Optical - Radio/X-ray Associations (MORX) Catalogue
• Characterizing the aerosol atmosphere above the Observatorio del Roque de los Muchachos by analyzing seven years of data taken with an GaAsP HPD-readout, absolutely calibrated elastic LIDAR
• AGILE Observations of the Gravitational-wave Source GW170817: Constraining Gamma-Ray Emission from a NS-NS Coalescence
• Correcting Imaging Atmospheric Cherenkov Telescope data with atmospheric profiles obtained with an elastic light detecting and ranging system
• Probing the magnetic field in the GW170817 outflow using H.E.S.S. observations
• H.E.S.S. follow-up observations of Binary Black Hole Coalescence events during the second and third Gravitational Waves observing runs of Advanced LIGO and Advanced Virgo
• Prototype Open Event Reconstruction Pipeline for the Cherenkov Telescope Array
• Performance of the joint LST-1 and MAGIC observations evaluated with Crab Nebula data
• What Determines the Maximum Mass of AGN-assisted Black Hole Mergers?
• Influence of clouds on the parameters of images measured by IACT at very high energies
• LVK S241125n: Massive Binary Black Hole Merger Produces Gamma Ray Burst in Active Galactic Nucleus Disk
• Performance and systematic uncertainties of CTA-North in conditions of reduced atmospheric transmission
• Cross-Observatory Coordination with tilepy: A Novel Tool for Observations of Multi-Messenger Transient Events
• A novel image correction method for cloud-affected observations with Imaging Atmospheric Cherenkov Telescopes