ultrarelativistic

ultrarelativistic

[¦əl·trə‚rel·ə·tə′vis·tik]
(relativity)
Having a speed that is nearly equal to the speed of light.
References in periodicals archive ?
The [L.sub.iso]-[E.sub.peak] relation could shed light on the structure of the ultrarelativistic outflow, the shock acceleration, and the magnetic field generation [239].
Ramirez, "Ultrarelativistic spinning particle and a rotating body in external fields," Advances in High Energy Physics, vol.
This leads to certain problems if we assume that MPTD equations remain applicable in the ultrarelativistic limit.
The physical cases s = 2, 1 correspond, respectively, to the nonrelativistic IFG with [C.sub.2] = [h.sup.2]/2m and to the ultrarelativistic IFG for which [C.sub.1] = ch, c being the speed of light.
The ultrarelativistic emission of charged particles by quasars along biaxial jets alludes to an electromagnetically active central engine of some form.
In the new picture, an ultrarelativistic narrow jet with an opening angle of 0.4[degrees] is surrounded by a wider and slower (but still relativistic) jet with an opening angle of 8[degrees].
Our result (see (31)) has been obtained in the ultrarelativistic limit, i.e., [p.sup.2] [much greater than] [m.sup.2].
This is not a difficult process numerically, but in the limiting ultrarelativistic case C [right arrow] [infinity]--effectively a null geodesic - it becomes especially simple
The ultrarelativistic heavy nuclei in the jet are high-energy cosmic rays that would punch right through the local interstellar medium.
Baker et al., "Charged-particle multiplicity and pseudorapidity distributions measured with the PHOBOS detector in Au+Au, Cu+Cu, d+Au, and p+p collisions at ultrarelativistic energies," Physical Review C, vol.
Radiated neutrinos are ultrarelativistic, a fact exploited by the Supernova Early Warning Systems to alert optical telescopes of impending supernova activity [57].