GeV Signatures of Short Gamma-Ray Bursts in Active Galactic Nuclei

Abstract

The joint detection of gravitational waves and the gamma-ray counterpart of a binary neutron star merger event, GW170817, unambiguously validates the connection between short gamma-ray bursts and compact binary object (CBO) mergers. We focus on a special scenario where short gamma-ray bursts produced by CBO mergers are embedded in disks of active galactic nuclei (AGN), and we investigate the $\gamma$-ray emission produced in the internal dissipation region via synchrotron, synchrotron self-Compton and external inverse-Compton (EIC) processes. In this scenario, isotropic thermal photons from the AGN disks contribute to the EIC component. We show that a low-density cavity can be formed in the migration traps, leading to the embedded mergers producing successful GRB jets. We find that the EIC component would dominate the GeV emission for typical CBO mergers with an isotropic-equivalent luminosity of $L_{j,\mathrm{iso}}=10^{48.5}\mathrm{erg}{\mathrm{s}}^{-1}$ which are located close to the central supermassive black hole. Considering a long-lasting jet of duration $T_{\mathrm{dur}}\sim 10^2-10^3$ s, we find that the future CTA will be able to detect its $25-100$ GeV emission out to a redshift $z=1.0$. {In the optimistic case, it is possible to detect the on-axis extended emission simultaneously with GWs within one decade using MAGIC, H.E.S.S., VERITAS, CTA, and LHAASO-WCDA. Early diagnosis of prompt emissions with Fermi-GBM and HAWC can provide valuable directional information for the follow-up observations.

11 pages, 5 figures. Accepted for publication in The Astrophysical Journal

References in corpus (30)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Multi-messenger Observations of a Binary Neutron Star Merger
• Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
• 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
• The X-ray counterpart to the gravitational wave event GW 170817
• A Radio Counterpart to a Neutron Star Merger
• The major upgrade of the MAGIC telescopes, Part II: A performance study using observations of the Crab Nebula
• A Global Three Dimensional Radiation Magneto-hydrodynamic Simulation of Super-Eddington Accretion Disks
• Short Duration Gamma-Ray Bursts with Extended Emission from Proto-Magnetar Spin-Down
• Candidate Electromagnetic Counterpart to the Binary Black Hole Merger Gravitational Wave Event S190521g
• X-Ray Flares from Postmerger Millisecond Pulsars
• AGN Disks Harden the Mass Distribution of Stellar-mass Binary Black Hole Mergers
• Formation of a disc gap induced by a planet: Effect of the deviation from Keplerian disc rotation
• Mass-gap Mergers in Active Galactic Nuclei
• High-Energy Neutrino Emission from Short Gamma-Ray Bursts: Prospects for Coincident Detection with Gravitational Waves
• Black Hole Formation in the Lower Mass Gap through Mergers and Accretion in AGN Disks
• Electromagnetic Signatures of Relativistic Explosions in AGN Disks
• Spectral Puzzle of the Off-Axis Gamma-Ray Burst in GW170817
• Neutron Star Mergers in AGN Accretion Disks: Cocoon and Ejecta Shock Breakouts
• On the Implications of Late Internal Dissipation for Shallow-Decay Afterglow Emission and Associated High-Energy Gamma-Ray Signals
• Bimodal Long-Lasting Components in Short Gamma-Ray Bursts: Promising Electromagnetic Counterparts to Neutron Star Binary Mergers
• Long-Lasting Black-Hole Jets in Short Gamma-Ray Bursts
• High efficiency photospheric emission entailed by formation of a collimation shock in gamma-ray bursts
• GW170817A as a Hierarchical Black Hole Merger
• Post-Merger Jets from Supermassive Black Hole Coalescences as Electromagnetic Counterparts of Gravitational Wave Emission
• High Energy Neutrinos from Choked Gamma-Ray Bursts in AGN Accretion Disks
• Upscattered Cocoon Emission in Short Gamma-ray Bursts as High-energy Gamma-ray Counterparts to Gravitational Waves
• External Inverse-Compton Emission Associated with Extended and Plateau Emission of Short Gamma-Ray Bursts: Application to GRB 160821B
• Comparison between RHD simulation of supercritical accretion flows and steady model with outflows

Cited by in corpus (11)

• The Role of Outflow Feedback on Accretion of Compact Objects in Accretion Disk of Active Galactic Nuclei
• Observable signatures of stellar-mass black holes in active galactic nuclei
• Prompt Emission of Gamma-Ray Bursts in the High-density Environment of Active Galactic Nuclei Accretion Disks
• Interacting Kilonovae: Long-lasting Electromagnetic Counterparts to Binary Mergers in the Accretion Disks of Active Galactic Nuclei
• Electromagnetic Cascade Emission from Neutrino-Coincident Tidal Disruption Events
• Propagation of GRB Relativistic Jets in AGN Disks and Its Implication for GRB Detection
• High-energy Neutrino Productions from AGN Disk Transients Impacted by Circum-disk Medium
• The Multiband Emission of the two-component Gamma-Ray Burst jet influenced by progenitor winds within the Accretion Disk of Active Galactic Nuclei
• Flavor Matters, but Matter Flavors: Matter Effects on Flavor Composition of Astrophysical Neutrinos
• The impact of kilonova seed photons on GRB VHE emission
• Chasing Gamma-Ray Signals from Binary Neutron Star Coalescences with the Cherenkov Telescope Array: Prospects and Observing Strategies