187 citations · 716 across the 15 of their papers we have counts for
15 papers
Probing Curvature Effects in the Fermi GRB 110920
A. Shenoy, E. Sonbas, C. Dermer +7
Curvature effects in Gamma-ray bursts (GRBs) have long been a source of considerable interest. In a collimated relativistic GRB jet, photons that are off-axis relative to the obser…
The Hurst Exponent of Fermi GRBs
Glen MacLachlan, Ashwin Shenoy, Eda Sonbas +5
Using a wavelet decomposition technique, we have extracted the Hurst exponent for a sample of 46 long and 22 short Gamma-ray bursts (GRBs) detected by the Gamma-ray Burst Monitor (…
Infrahumps detected in Kepler light curve of V1504 Cygni
Robert Coyne, Ashwin Shenoy, Glen MacLachlan +6
We present a power spectral density analysis of the short cadence Kepler data for the cataclysmic variable V1504 Cygni. We identify three distinct periods: the orbital period (1.66…
The Minimum Variability Time Scale and its Relation to Pulse Profiles of Fermi GRBs
G. A. MacLachlan, A. Shenoy, E. Sonbas +4
We present a direct link between the minimum variability time scales extracted through a wavelet decomposition and the rise times of the shortest pulses extracted via fits of 34 Fe…
Minimum Variability Time Scales of Long and Short GRBs
G. A. MacLachlan, A. Shenoy, E. Sonbas +7
We have investigated the time variations in the light curves from a sample of long and short Fermi/GBM Gamma ray bursts (GRBs) using an impartial wavelet analysis. The results indi…
The Lag-Luminosity Relation in the GRB Source-Frame: An Investigation with Swift BAT Bursts
T. N. Ukwatta, K. S. Dhuga, M. Stamatikos +12
Spectral lag, which is defined as the difference in time of arrival of high and low energy photons, is a common feature in Gamma-ray Bursts (GRBs). Previous investigations have sho…
A New Frequency-Luminosity Relation for Long GRBs?
T. N. Ukwatta, K. S. Dhuga, D. C. Morris +7
We have studied power density spectra (PDS) of 206 long Gamma-Ray Bursts (GRBs). We fitted the PDS with a simple power-law and extracted the exponent of the power-law (alpha) and t…
Sensitivity of the FERMI Detectors to Gamma-Ray Bursts from Evaporating Primordial Black Holes (PBHs)
T. N. Ukwatta, Jane H. MacGibbon, W. C. Parke +6
Primordial Black Holes (PBHs), which may have been created in the early Universe, are predicted to be detectable by their Hawking radiation. The Fermi Gamma-ray Space Telescope obs…
Spectral Lags and the Lag-Luminosity Relation: An Investigation with Swift BAT Gamma-ray Bursts
T. N. Ukwatta, M. Stamatikos, K. S. Dhuga +7
Spectral lag, the time difference between the arrival of high-energy and low-energy photons, is a common feature in Gamma-ray Bursts (GRBs). Norris et al. 2000 reported a correlati…
Variability in the Prompt Emission of Swift-BAT Gamma-Ray Bursts
T. N. Ukwatta, K. S. Dhuga, W. C. Parke +8
We present the results of our study of the variability time scales of a sample of 27 long Swift Gamma-Ray Bursts (GRBs) with known redshifts. The variability time scale can help ou…
Spectral Lags of Gamma-Ray Bursts from Primordial Black Hole (PBH) Evaporations
T. N. Ukwatta, J. H. MacGibbon, W. C. Parke +5
Primordial Black Holes (PBHs), which may have been created in the early Universe, are predicted to be detectable by their Hawking radiation. PBHs with an initial mass of 5.0 * 10^1…
eta-prime photoproduction on the proton for photon energies from 1.527 to 2.227 GeV
M. Dugger, J. P. Ball, P. Collins +2
Differential cross sections for the reaction gamma p -> eta-prime p have been measured with the CLAS spectrometer and a tagged photon beam with energies from 1.527 to 2.227 GeV. Th…
Deeply virtual and exclusive electroproduction of omega mesons
CLAS collaboration, L. Morand
The exclusive omega electroproduction off the proton was studied in a large kinematical domain above the nucleon resonance region and for the highest possible photon virtuality (Q2…
Radiative Corrections to Electron-Proton Scattering
L. C. Maximon, J. A. Tjon
The radiative corrections to elastic electron-proton scattering are analyzed in a hadronic model including the finite size of the nucleon. For initial electron energies above 8 GeV…
Radiative Corrections to Elastic Electron-Proton Scattering for Polarized Electrons
L. C. Maximon, W. C. Parke
We analyze the radiative correction to high energy elastic electron-proton scattering of polarized electrons. We show that if the approximations inherent in the calculations develo…