ar X iv : a st ro - p h / 06 07 09 4 v 2 2 4 M ay 2 00 7 Studies of systematic uncertainties in the estimation of the monocular aperture of the HiRes experiment

ar X iv : a st ro - p h / 06 07 09 4 v 1 6 J ul 2 00 6 Studies of systematic uncertainties in the estimation of the monocular aperture of the HiRes experiment

We have studied several sources of systematic uncertainty in calculating the aperture of the High Resolution Fly’s Eye experiment (HiRes) in monocular mode, primarily as they affect the HiRes-II site. The energy dependent aperture is determined with detailed Monte Carlo simulations of the air showers and the detector response. We have studied the effects of changes to the input energy spectrum ...

ar X iv : a st ro - p h / 06 05 06 7 v 1 2 M ay 2 00 6 Sensitivity and pointing accuracy of the NEMO km 3 telescope

ar X iv : a st ro - p h / 06 06 12 4 v 2 3 0 M ay 2 00 7 Inhomogeneous Cosmology , Inflation and Late - Time Accelerating Universe

An exact inhomogeneous solution of Einstein’s field equations is shown to be able to inflate in a non-uniform way in the early universe and explain anomalies in the WMAP power spectrum data. It is also possible for the model to explain the accelerated expansion of the universe by late-time inhomogeneous structure. e-mail: [email protected]

ar X iv : a st ro - p h / 06 11 08 0 v 2 7 N ov 2 00 6 Revisiting VLT / UVES constraints on a varying fine - structure constant

Current analyses of VLT/UVES quasar spectra disagree with the Keck/HIRES evidence for a varying fine-structure constant, α. To investigate this we introduce a simple method for calculating the minimum possible uncertainty on ∆α/α for a given quasar absorber. For many absorbers in Chand et al. (2004) and for the single-absorber constraint of Levshakov et al. (2006) the quoted uncertainties are s...

ar X iv : a st ro - p h / 02 08 30 1 v 1 1 5 A ug 2 00 2 Measurement of the Spectrum of UHE Cosmic Rays by the FADC Detector of the HiRes Experiment

Preprint submitted to Elsevier Preprint 17 February 2008 We have measured the spectrum of UHE cosmic rays using the flash ADC (FADC) detector (called HiRes-II) of the High Resolution Fly’s Eye experiment running in monocular mode. We describe in detail the data analysis, development of the Monte Carlo simulation program, and results. We also describe the results of our other detector, HiRes-I. ...