The Zwicky Transient Facility (ZTF) collaboration is currently in an extended phase of operation aligned with the fourth gravitational-wave observing run of LIGO-Virgo-KAGRA (ZTF-O4). During this phase, the ZTF collaboration will conduct a three-night public experiment each month with various scientific focuses and survey designs (see Ahumada et al., 2023-349).
The next ZTF extragalactic experiment is scheduled to start on 2024-04-09 at 03:07 UT and end on 2024-04-11 at 12:26 UT. The goal of this experiment is to detect and characterize faint optical transients in 41 fields covering several nearby galaxy clusters and superclusters, including Virgo, Hercules, Coma, Leo, Hydra, and the Shapley concentration (see attached figure for field selection). Each of the selected fields will be imaged nightly in the g, r, and i bands. The exposure time is 240 seconds for the g and r bands, and 300 sec for the i band.
As a public experiment, transient alerts will be released in real-time through the public alert stream. We strongly encourage coordinated imaging observations or spectroscopic follow-ups of interesting objects. Images and catalogs will also be included in the ZTF public data release.
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ZTF is supported by the National Science Foundation under Grants No. AST-1440341 and AST-2034437 and a collaboration including current partners Caltech, IPAC, the Oskar Klein Center at Stockholm University, the University of Maryland, University of California, Berkeley, the University of Wisconsin at Milwaukee, University of Warwick, Ruhr University, Cornell University, Northwestern University and Drexel University.
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