Optimal follow-up observations of gravitational wave events with small optical telescopes
arXiv:1705.04008 · doi:10.1103/PhysRevD.96.084067
Abstract
We discuss optimal strategy for follow-up observations by 1-3 m class optical/infrared telescopes which target optical/infrared counterparts of gravitational wave events detected with two laser interferometric gravitational wave detectors. The probability maps of transient sources, such as coalescing neutron stars and/or black holes, determined by two laser interferometers generally spread widely. They include the distant region where it is difficult for small aperture telescopes to observe the optical/infrared counterparts. For small telescopes, there is a possibility that it is more advantageous to search for nearby region even if the probability inferred by two gravitational wave detectors is low. We show that in the case of the first three events of advanced LIGO, the posterior probability map, derived by using a distance prior restricted to a nearby region, is different from that derived without such restriction. This suggests that the optimal strategy for small telescopes to perform follow-up observation of LIGO-Virgo's three events are different from what has been searched so far. We also show that, when the binary is nearly edge-on, it is possible that the true direction is not included in the 90% posterior probability region. We discuss the optimal strategy to perform optical/infrared follow-up observation with small aperture telescopes based on these facts.
arXiv comment12 pages, 6 figures, accepted for publication in Phys. Rev. D, added cases of design sensitivities
References in corpus (24)
- Observation of Gravitational Waves from a Binary Black Hole Merger
- Binary Black Hole Mergers in the first Advanced LIGO Observing Run
- Interferometer design of the KAGRA gravitational wave detector
- Properties of the Binary Black Hole Merger GW150914
- Robust parameter estimation for compact binaries with ground-based gravitational-wave observations using the LALInference software library
- Detector configuration of KAGRA - the Japanese cryogenic gravitational-wave detector
- A simple model of complete precessing black-hole-binary gravitational waveforms
- Comparison of post-Newtonian templates for compact binary inspiral signals in gravitational-wave detectors
- Fermi GBM Observations of LIGO Gravitational Wave event GW150914
- Localization and broadband follow-up of the gravitational-wave transient GW150914
- Networks of gravitational wave detectors and three figures of merit
- Bayesian coherent analysis of in-spiral gravitational wave signals with a detector network
- Towards models of gravitational waveforms from generic binaries: A simple approximate mapping between precessing and non-precessing inspiral signals
- Identifying Elusive Electromagnetic Counterparts to Gravitational Wave Mergers: an end-to-end simulation
- Going the Distance: Mapping Host Galaxies of LIGO and Virgo Sources in Three Dimensions Using Local Cosmography and Targeted Follow-up
- The First Two Years of Electromagnetic Follow-Up with Advanced LIGO and Virgo
- Kilonova/Macronova Emission from Compact Binary Mergers
- Supplement: Localization and broadband follow-up of the gravitational-wave transient GW150914
- A search for an optical counterpart to the gravitational wave event GW151226
- Avoiding selection bias in gravitational wave astronomy
- Where and when: optimal scheduling of the electromagnetic follow-up of gravitational-wave events based on counterpart lightcurve models
- J-GEM Follow-Up Observations to Search for an Optical Counterpart of The First Gravitational Wave Source GW150914
- J-GEM Follow-Up Observations of The Gravitational Wave Source GW151226
- Coherent Bayesian analysis of inspiral signals