On the energetics of a possible relativistic jet associated with the binary neutron star merger candidate S190425z
arXiv:1905.00337 · doi:10.3847/1538-4357/ab6731
Abstract
Advanced LIGO and Virgo detectors reported the first binary neutron star merger candidate in the third observing run, S190425z, on 25th April 2019. A weak -ray excess was reported nearly coincidentally by the INTEGRAL satellite which accidentally covered the entire localization region of AdvLIGO/VIRGO. Electromagnetic follow-up in longer wavelengths has not lead to the detection of any associated counterparts. Here we combine the available information from gravitational-wave measurements and upper limits of fluence from \textit{INTEGRAL} to show that the observations are completely consistent with a relativistic Gaussian structured jet and a typical short duration Gamma-Ray Burst (GRB) being produced in the merger. We obtain posterior bounds on the on-axis isotropic equivalent energy of the associated GRB under different prior distributions. This study demonstrates that even limited GW and EM information could be combined to produce valuable insights about outflows from mergers. Future follow-ups may help constrain the jet structure further, especially if there is an orphan afterglow detection associated with the candidate.
5 pages, 3 figures, Accepted for publication in ApJ
References in corpus (18)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
- GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs
- An Ordinary Short Gamma-Ray Burst with Extraordinary Implications: Fermi-GBM Detection of GRB 170817A
- Illuminating Gravitational Waves: A Concordant Picture of Photons from a Neutron Star Merger
- A Radio Counterpart to a Neutron Star Merger
- Discerning the physical origins of cosmological Gamma-ray bursts based on multiple observational criteria: the cases of z=6.7 GRB 080913, z=8.3 GRB 090423, and some short/hard GRBs
- Electromagnetic Counterparts to Structured Jets from Gravitational Wave Detected Mergers
- The optical afterglow of GW170817 at one year post-merger
- Off-axis short GRBs from structured jets as counterparts to GW events
- A complete sample of bright Swift short Gamma-Ray Bursts
- Short GRBs at the dawn of the gravitational wave era
- Structure of Gamma-Ray Burst jets: intrinsic versus apparent properties
- EM counterparts of structured jets from 3D GRMHD simulations
- Propagation of a Short GRB Jet in the Ejecta: Jet Launching Delay Time, Jet Structure, and GW170817/GRB 170817A
- Synergy of short gamma ray burst and gravitational wave observations: Constraining the inclination angle of the binary and possible implications for off-axis gamma ray bursts
- Viewing angle constraints on S190425z and S190426c and the joint gravitational-wave/gamma-ray detection fractions for binary neutron star mergers
- Probability distribution function for inclinations of merging compact binaries detected by gravitational wave interferometers
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- Updated observing scenarios and multi-messenger implications for the International Gravitational-wave Network's O4 and O5
- Electromagnetic Follow-up to Gravitational Wave Events with the UltraViolet EXplorer (UVEX)