Abstract
We derive limits on any electromagnetic counterpart to the compact binary merger S190814bv, whose parameters are consistent with the merger of a black hole and a neutron star. We present observations with the new wide-field optical imager DDOTI and also consider Swift/BAT observations reported by Palmer et al. We show that Swift/BAT would have detected a counterpart with similar properties to a typical on-axis short GRB at the 98 per cent confidence level, whereas our DDOTI observations only rule out such a counterpart at the 27 per cent confidence level. Neither has sufficient sensitivity to rule out an off-axis counterpart like GW 170817. We compare the efficiency of Swift/BAT and DDOTI for future observations, and show that DDOTI is likely to be about twice as efficient as Swift/BAT for off-axis events up to about 100 Mpc.
Original language | English (US) |
---|---|
Pages (from-to) | 5916-5921 |
Number of pages | 6 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 492 |
Issue number | 4 |
DOIs | |
State | Published - 2020 |
Keywords
- Binaries: close
- Gamma-ray burst: general
- Gravitational waves
- Stars: black holes
- Stars: neutron
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science