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9 papers · 2 filters
Comment on 'Discreteness Effects in Simulations of Hot/Warm Dark Matter' by J. Wang & S.D.M. White
Adrian L. Melott
Wang and White (2007) have discussed some problems with N-body simulation methods. These problems are a special case of a more general problem which has been largely unacknowledged…
The uvbyHbeta Metallicity Calibration for G and K Dwarfs
B. A. Twarog, L. C. Vargas, B. J. Anthony-Twarog
The metallicity dependence of the primary indices of the uvby photometric system for cooler dwarfs (Teff ~ 6500 K to 5000K) is investigated. The data base for the analysis is compo…
Detection of Atmospheric Muon Neutrinos with the IceCube 9-String Detector
The IceCube Collaboration, A. Achterberg
The IceCube neutrino detector is a cubic kilometer TeV to PeV neutrino detector under construction at the geographic South Pole. The dominant population of neutrinos detected in Ic…
Superluminous supernovae: No threat from Eta Carinae
Brian C. Thomas, Adrian L. Melott, Brian D. Fields +1
Recently Supernova 2006gy was noted as the most luminous ever recorded, with a total radiated energy of ~10^44 Joules. It was proposed that the progenitor may have been a massive e…
Dark matter caustics and the enhancement of self-annihilation flux
Roya Mohayaee, Sergei Shandarin, Joseph Silk
Cold dark matter haloes are populated by caustics, which are yet to be resolved in N-body simulations or observed in the Universe. Secondary infall model provides a paradigm for th…
Jitter radiation in gamma-ray bursts and their afterglows: emission and self-absorption
Jared Workman, Brian Morsony, Davide Lazzati +1
Relativistic electrons moving into a highly tangled magnetic field emit jitter radiation. We present a detailed computation of the jitter radiation spectrum, including self-absorpt…