Engineering topics
Krisher, T.
Publications and source records attributed to Krisher, T..
The Gravitational Redshift in a Local Freely-Falling Frame: A New Null Test of the Equivalence Principle
We consider the gravitational redshift effect measured by an observer in a local freely-falling frame in the gravitational field of a massive body.
Improved Bounds on Non-Luminous Matter in Solar Orbit
We improve, using a larger set of observations including Voyager 2 Neptune flyby data, previous bounds on the amount of dark matter (DM) trapped in a spherically symmetric distribution about the sun. We bound DM by noting that such a distribution would increase the effective mass of the sun as seen by the outer planets and by finding the uncertainty in that effective mass for Uranus and Neptune in fits to the JPL Developmental Ephermeris residuals, including optical data and those two planets' Voyager 2 flybys. We extend our previous procedure by fitting more parameters of the developmental ephemerides. Additionally, we present here the values for Pioneer 10 and 11 and Voyager 1 and 2 Jupiter ranging normal points (and incorporate these data as well).
Reply to Mr. Silvertooth's Letter
The JPL experiment is indeed similar in spirit to that of Cialdea, but not the earlier MIT experiments (which involved the comparison of laser cavities).