LIGO/Virgo/KAGRA S240422ed: MeerLICHT and BlackGEM observations report
Abstract
Following the LVK Alert S240422ed (GCN36235, GCN36236) the 0.6m BlackGEM and MeerLICHT telescopes array, located at the ESO La Silla, Chile and SAAO Sutherland, South Africa observatories, have started to observe the error box with the ML1/BG2/BG4 telescopes using a predefined sky-grid tiling that covers the accessible part of the error region using the ranked-tiling method as outlined in Ghosh et al. (2016). Observations were obtained in the q band using a 2x10-tile strategy. Starting with the highest probability tiles a set of 10-tiles was observed in q-band filter (440-720nm) using 60s exposures, which was repeated directly after the first 10 tiles were observed. Subsequently tiles 11-20 were observed in the same two-visit manner, etc. Observations started at 2024-04-22 21:34 with MeerLICHT and 2024-04-22 23:10 with BlackGEM. Sutherland skies show high cirrus, which will limit the photometric depth. La Silla skies are clear. Photometric depth will be limited by the Full Moon. All observations are reported to the Gravitational Wave Treasure Map (https://treasuremap.space/). Any candidates will be reported to the GCN server as well as to the Transient Name Server (https://www.wis-tns.org/). Observations are continuing. The BlackGEM/MeerLICHT telescopes are designed, installed and operated by a consortium of the following universities and institutions: Radboud University, Netherlands Research School for Astronomy NOVA, KU Leuven, Armagh Observatory and Planetarium, Danish Technical University, Durham University, Hebrew University of Jerusalem, South African Astronomical Observatory, Tel Aviv University, Texas Tech University, University of Amsterdam, University of Barcelona, University of California at Davis, University of Cape Town, University of Hamburg, University of Manchester, University of Oxford, University of Potsdam, University of Valparaiso, University of Warwick, Weizmann Institute References: Ghosh et al., 2016, A&A 592, 82
- Publication:
-
GRB Coordinates Network
- Pub Date:
- April 2024
- Bibcode:
- 2024GCN.36237....1G