We have searched for intermediate-scale anisotropy in the arrival directions of ultrahigh-energy cosmic rays with energies above 57~EeV in the northern sky using data collected over a 5 year period by the surface detector of the Telescope Array exper
iment. We report on a cluster of events that we call the hotspot, found by oversampling using 20$^circ$-radius circles. The hotspot has a Li-Ma statistical significance of 5.1$sigma$, and is centered at R.A.=146.7$^{circ}$, Dec.=43.2$^{circ}$. The position of the hotspot is about 19$^{circ}$ off of the supergalactic plane. The probability of a cluster of events of 5.1$sigma$ significance, appearing by chance in an isotropic cosmic-ray sky, is estimated to be 3.7$times$10$^{-4}$ (3.4$sigma$).
We present a measurement of the energy spectrum of ultra-high-energy cosmic rays performed by the Telescope Array experiment using monocular observations from its two new FADC-based fluorescence detectors. After a short description of the experiment,
we describe the data analysis and event reconstruction procedures. Since the aperture of the experiment must be calculated by Monte Carlo simulation, we describe this calculation and the comparisons of simulated and real data used to verify the validity of the aperture calculation. Finally, we present the energy spectrum calculated from the merged monocular data sets of the two FADC-based detectors, and also the combination of this merged spectrum with an independent, previously published monocular spectrum measurement performed by Telescope Arrays third fluorescence detector (Abu-Zayyad {it et al.}, {Astropart. Phys.} 39 (2012), 109). This combined spectrum corroborates the recently published Telescope Array surface detector spectrum (Abu-Zayyad {it et al.}, {Astrophys. Journ.} 768 (2013), L1) with independent systematic uncertainties.
