7 citations
3 papers
astro-ph2008
On the Very-High-Energy Gamma Ray Spectra from Typical Supernovae Remnants
Richard Shurtleff
Recently measured VHE gamma ray spectra from supernovae remnants (SNRs) are best fit by power laws with an exponential cutoff. But this feature does not occur at the `knee-equivale…
math-ph2005
The Lorentz Force Law and Spacetime Symmetries
Richard Shurtleff
Assume that arc length is measured with the flat spacetime metric. Then, for the most general Poincare group representation for translating 4-vectors, curves with parallel translat…
gr-qc2005★ 7 cited
Poincare Connections in Flat Spacetime
Richard Shurtleff
In flat spacetime, as a simple 4-vector, a particle's 4-velocity cannot be changed by translation. Parallel translation then produces constant velocity, motion without force. Here…