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The Fermi Gamma-ray Space Telescope has greatly expanded the number andenergy window of observations of gamma-ray bursts (GRBs). However, the coarselocalizations of tens to a hundred square degrees provided by the Fermi GRBMonitor instrument have posed a formidable obstacle to locating the bursts'host galaxies, measuring their redshifts, and tracking their panchromaticafterglows. We have built a target-of-opportunity mode for the intermediatePalomar Transient Factory in order to perform targeted searches for Fermiafterglows. Here, we present the results of one year of this program: 8afterglow discoveries out of 35 searches. Two of the bursts with detectedafterglows (GRBs 130702A and 140606B) were at low redshift (z=0.145 and 0.384respectively) and had spectroscopically confirmed broad-line Type Icsupernovae. We present our broadband follow-up including spectroscopy as wellas X-ray, UV, optical, millimeter, and radio observations. We study possibleselection effects in the context of the total Fermi and Swift GRB samples. Weidentify one new outlier on the Amati relation. We find that two bursts areconsistent with a mildly relativistic shock breaking out from the progenitorstar, rather than the ultra-relativistic internal shock mechanism that powersstandard cosmological bursts. Finally, in the context of the Zwicky TransientFacility, we discuss how we will continue to expand this effort to find opticalcounterparts of binary neutron star mergers that may soon be detected byAdvanced LIGO and Virgo.

The Needle in the 100 deg2 Haystack: Uncovering Afterglows of Fermi GRBs with the Palomar Transient Factory