Leo Singer

TL;DR: In this paper, the authors present an implementation of the Gehrels et al. (2016) galaxy-targeted strategy for gravitational-wave follow-up using the Las Cumbres Observatory global network of telescopes.

TL;DR: In this paper, the authors investigate models of long-lived GW emission associated with the accretion disk of a collapsed star or with its protoneutron star remnant, and place 90% confidence level upper limits on the GW fluence at Earth from long gamma-ray bursts for three waveforms inspired by a model of GWs from accretion disks instabilities.

TL;DR: In this paper, the authors reported an upper bound on the coalescence rate of binary IMBH mergers with non-spinning and equal mass components of either 1:1 or 4:1.

TL;DR: In this paper, an all-sky search for periodic gravitational waves in the frequency range 50-1000 Hz with the first derivative of frequency in the range −8.9 × 10−10 Hz s−1 to zero in two years of data collected during LIGO's fifth science run is reported.

Abstract: Binary neutron stars (BNSs) will spend ;10–15 minutes in the band of Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo detectors at design sensitivity. Matched-filtering of gravitational-wave (GW) data could in principle accumulate enough signal-to-noise ratio (S/N) to identify a forthcoming event tens of seconds before the companions collide and merge. Here we report on the design and testing of an early-warning GW detection pipeline. Early-warning alerts can be produced for sources that are at low enough redshift so that a large enough S/N accumulates ∼10–60s before merger. We find that about 7% (49%) of the total detectable BNS mergers will be detected 60s (10s) before the merger. About 2% of the total detectable BNS mergers will be detected before merger and localized to within 100 deg2 (90% credible interval). Coordinated observing by several wide-field telescopes could capture the event seconds before or after the merger. LIGO–Virgo detectors at design sensitivity could facilitate observing at least one event at the onset of merger. Unified Astronomy Thesaurus concepts: Neutron stars (1108); Gravitational waves (678)