ESO Follow-up Observations of LIGO-VIRGO Gravitational Wave Source GW 170817: reduced VLT/NACO L’ band imaging data released
The detection of the gravitational wave source GW 170817 by the LIGO-VIRGO observatory network, as well as the gamma-ray burst GRB 170817A, on 17 August 2017 has resulted in one of the largest Target of Opportunity campaigns at ESO (www.eso.org/public/news/eso1733/).
This new data release adds reduced images in the L' filter, centred at 3.80 microns, to the previously released VISIR reduced frames, both carried out under ESO Programme 60.A-9392(A), PI A. Kaufer. Observations have been carried out with the NACO instrument on the VLT on eleven nights between 24 August and 4 September 2017. The current release includes the reduced data, images and noise maps, from the five nights in which the nearby galaxy NGC 4993 was detected plus four additional datasets, obtained by stacking the nights with the goal of increasing the sensitivity and reflecting the possible intrinsic fading of the source with time.
Data can be queried and downloaded using the Phase 3 generic query form. More details about the release can be found in the accompanying documentation.