636 citations · 2k across the 47 of their papers we have counts for
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The multi-angle instability in dense neutrino systems
R. F. Sawyer
We calculate rates of flavor exchange within clouds of neutrinos interacting with each other through the standard model coupling, assuming a conventional mass matrix. For cases in…
Photoabsorption in a plasma in a high magnetic field
R. F. Sawyer
Photo-absorption in fully ionized plasmas in high magnetic fields is re-examined, using the methods of many-body quantum field theory. For frequencies in the immediate vicinity of…
Hydrodynamics of an electron-positron plasma near a black hole; applications to jet formation
R. F. Sawyer
We investigate some features of the hydrodynamics and neutrino physics in the (predominantly) electron-positron plasma above a hyperaccreting disk (or torus) around a black hole, a…
Bulk viscosity of a gas of neutrinos and coupled scalar particles, in the era of recombination
R. F. Sawyer
Bulk viscosity may serve to damp sound waves in a system of neutrinos coupled to very light scalar particles, in the era after normal neutrino decoupling but before recombination.…
Effects of ion and electron correlations on neutrino scattering in the infall phase of a supernova
R. F. Sawyer
Many authors have used one-component plasma simulations in discussing the role of ion-ion correlations in reducing neutrino opacities during the collapse phase of a supernova. In a…
Neutrino transport in accretion disks
R. F. Sawyer
We test approximate approaches to solving a neutrino transport problem that presents itself in the analysis of some accretion-disk models. Approximation #1 consists of replacing th…
Neutrino Propagation in Dense Astrophysical Systems
M. Prakash, J. M. Lattimer, R. F. Sawyer +1
Even the elusive neutrinos are trapped in matter, albeit transiently, in several astrophysical circumstances. Their interactions with the ambient matter not only reveal the propert…
The Salpeter plasma correction for solar fusion reactions
John N. Bahcall, Lowell Brown, Andrei Gruzinov +1
We review five different derivations that demonstrate that the Salpeter formula for the plasma corrections to fusion rates is valid at the center of the sun with insignificant erro…
Finite temperature corrections to weak rates prior to nucleosynthesis
Lowell S. Brown, R. F. Sawyer
We have reexamined the electromagnetic corrections to the weak interaction rates for the transformation of neutrons to protons, and protons to neutrons, in the early universe, befo…
On some singularities of the correlation functions that determine neutrino opacities
R. F. Sawyer
Certain perturbation graphs in the calculation of the effects of the medium on neutrino scattering in supernova matter have a nonintegrable singularity in a physical region. A numb…
Solar Fusion Cross Sections
E. Adelberger, S. Austin, J. Bahcall +36
We review and analyze the available information for nuclear fusion cross sections that are most important for solar energy generation and solar neutrino production. We provide best…
Many-Body Corrections to Charged-Current Neutrino Absorption Rates in Nuclear Matter
Adam Burrows, R. F. Sawyer
Including nucleon--nucleon correlations due to both Fermi statistics and nuclear forces, we have developed a general formalism for calculating the charged--current neutrino--nucleo…
The Effects of Correlations on Neutrino Opacities in Nuclear Matter
Adam Burrows, R. F. Sawyer
Including nucleon-nucleon correlations due to both Fermi statistics and nuclear forces, we have developed a general formalism for calculating the neutral-current neutrino-nucleon o…
Nuclear Electron Capture in a Plasma
Lowell S. Brown, R. F. Sawyer
We consider the electron density at the position of an ion of charge Ze in a plasma under conditions approximating those in the core of the sun. Numerical calculations have shown t…
Nuclear Reaction Rates in a Plasma
Lowell S. Brown, R. F. Sawyer
The problem of determining the effects of the surrounding plasma on nuclear reaction rates in stars is formulated ab initio, using the techniques of quantum statistical mechanics.…