Fillippo Frontera

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The Robotic Optical Transient Search Experiment (ROTSE) seeks to measure simultaneous and early afterglow optical emission from gamma-ray bursts (GRBs). A search for optical counterparts to six GRBs with localization errors of 1 square degree or better produced no detections. The earliest limiting sensitivity is mROTSE > 13.1 at 10.85 seconds (5 second(More)
After a brief discussion of the abuse of cesarean sections over the last ten years, the authors describes a personal obstetric manoeuvre used in posterior occipital presentations; namely in those positions in which dystocia may easily occur possible harmful consequences of both the patient and fetus. The aim of this manoeuvre is to encourage or accelerate(More)
We present the discovery observations of the optical counterpart of the gamma-ray burst GRB 990712 taken 4.16 hr after the outburst and discuss its light curve observed in the V , R, and I bands during the Ðrst D35 days after the outburst. The observed light curves were Ðtted with a power-law decay for the optical transient (OT), plus an additional(More)
University of Michigan, Ann Arbor, MI 48109, USA Los Alamos National Laboratory, Los Alamos, NM 87545, USA NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA Universities Space Research Association, Seabrook, MD 20706, USA Raytheon Systems, Lanham, MD 20706, USA Università degli Studi di Ferrara, Ferrara, Italy Space Research Organization, Utrecht,(More)