arXiv subjects

Hans-Joachim Blome

Publications and source records attributed to Hans-Joachim Blome.

3 recordsLinked to original sources

arXiv2010

Nonlocal Modification of Newtonian Gravity

The Newtonian regime of a recent nonlocal extension of general relativity (GR) is investigated. Nonlocality is introduced via a scalar "constitutive" kernel in a special case of the translational gauge theory of gravitation, namely, the teleparallel equivalent of GR. In this theory, the nonlocal aspect of gravity simulates dark matter. A nonlocal and nonlinear generalization of Poisson's equation of Newtonian gravitation is presented. The implications of nonlocality for the gravitational physics in the solar system are briefly studied.

gr-qc↗

arXiv2009

The Pioneer Anomaly and a Rotating Gödel Universe

Based upon a simple cosmological model with no expansion, we find that the rotational terms appearing in the G/"odel universe are too small to explain the Pioneer anomaly. Although it contributes, universal rotation is not the cause of the Pioneer effect.

gr-qc↗

arXiv2006

Wolfgang Priester: from the big bounce to the Lambda-dominated universe

Wolfgang Priester was one of Germany's most versatile and quixotic astrophysicists, re-inventing himself successively as a radio astronomer, space physicist and cosmologist, and making a lasting impact on each field. We focus in this personal account on his contributions to cosmology, where he will be most remembered for his association with quasars, his promotion of the idea of a nonsingular "big bounce" at the beginning of the current expansionary phase, and his recognition of the importance of dark energy (Einstein's cosmological constant Lambda) well before this became the standard paradigm in cosmology.

astro-ph↗