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GRB 091024A and the nature of ultra-long gamma-ray bursts
F. J. Virgili, C. G. Mundell, V. Pal'shin +30
We present a broadband study of gamma-ray burst (GRB) 091024A within the context of other ultra-long-duration GRBs. An unusually long burst detected by Konus-Wind, Swift, and Fermi…
Magnetic field generation in a jet-sheath plasma via the kinetic Kelvin-Helmholtz instability
K. -I. Nishikawa, P. Hardee, B. Zhang +11
We have investigated generation of magnetic fields associated with velocity shear between an unmagnetized relativistic jet and an unmagnetized sheath plasma. We have examined the s…
X-ray source variability study of the M 31 central field using Chandra HRC-I
F. Hofmann, W. Pietsch, M. Henze +5
[Abridged] The central field of the Andromeda galaxy (M 31) has been monitored, using the Chandra HRC-I detector (about 0.1-10 keV energy range) from 2006 to 2012 with the main aim…