In Search of Short Gamma-Ray Burst Optical Counterparts with the Zwicky Transient Facility

The Fermi Gamma-ray Burst Monitor (GBM) triggers on-board in response to $\sim$ 40 short gamma-ray bursts (SGRBs) per year; however, their large localization regions have made the search for optical counterparts a challenging endeavour. We developed and executed an extensive program with wide field of view Zwicky Transient Facility (ZTF) camera, mounted on Palomar 48 inch Oschin telescope (P48), perform target-of-opportunity (ToO) observations 10 Fermi-GBM SGRBs during 2018 2020-2021. Bridging sky areas small telescopes order track evolution potential candidates, we look elusive SGRB afterglows kilonovae (KNe) associated these high-energy events. No counterpart has yet been found, even though more than ground based telescopes, part Global Relay Observatories Watching Transients Happen (GROWTH) network, taken efforts. candidate selection procedure follow-up strategy shown that ZTF is efficient instrument searching poorly localized SGRBs, retrieving reasonable number candidates showing promising capabilities as community approaches multi-messenger era. Based median limiting magnitude ZTF, our searches would able retrieve GW170817-like event up 200 Mpc z = 0.16 or 0.4, depending assumed underlying energy model. Future ToOs will expand horizon 0.2 0.7 respectively.