864 citations · 3.3k across the 90 of their papers we have counts for
6 papers · 2 filters
Kinetics of Particles in Relativistic Collisionless Shocks
Mikhail V. Medvedev, Luis O. Silva, Ricardo A. Fonseca +2
Charged plasma particles form an anisotropic counter-streaming distribution at the front of a shock. In the near- and ultra-relativistic regimes, Weibel (or two-stream) instability…
Did a gamma-ray burst initiate the late Ordovician mass extinction?
A. Melott, B. Lieberman, C. Laird +6
Gamma-ray bursts (hereafter GRB) produce a flux of radiation detectable across the observable Universe, and at least some of them are associated with galaxies. A GRB within our own…
Chandra Observations of the Dwarf Nova WX Hyi in Quiescence
Rosalba Perna, Jonathan McDowell, Kristen Menou +2
We report Chandra observations of the dwarf nova WX Hyi in quiescence. The X-ray spectrum displays strong and narrow emission lines of N, O, Mg, Ne, Si, S and Fe. The various ioniz…
Self-Similar Hot Accretion onto a Spinning Neutron Star: Matching the Outer Boundary Conditions
Ramesh Narayan, Mikhail V. Medvedev
Medvedev & Narayan have described a hot accretion flow onto a spinning neutron star in which the gas viscously brakes the spin of the star. Their self-similar solution has the surp…
Limits on thermal conduction in galaxy clusters
Mikhail V. Medvedev, Adrian L. Melott, Chris Miller +1
We have calculated lower limits for the global effective thermal conductivity in a sample of 165 Abell clusters. We assumed that cluster X-ray luminosity is compensated by a conduc…
A Constraint on Electromagnetic Acceleration of Highest Energy Cosmic Rays
Mikhail V. Medvedev
The energetics of electromagnetic acceleration of ultra-high-energy cosmic rays (UHECRs) is constrained both by confinement of a particle within an acceleration site and by radiati…