11 papers
Generic Peculiar Motions in FLRW Spacetimes
Bahram Mashhoon
In the standard Friedmann-Lemaître-Robertson-Walker (FLRW) spacetime, we consider a local cosmic test mass that is boosted in some direction relative to the standard comoving obse…
Modification of Aberration due to the Helicity-Rotation Coupling
Bahram Mashhoon
We review the physical basis for the assumption of locality in relativistic physics and its connection with the aberration of starlight. As a consequence of the hypothesis of local…
Schwarzschild Spacetime and the Local Limit of Nonlocal Gravity
Yahya Mohammadi, Javad Tabatabaei, Shant Baghram +1
We investigate static spherically symmetric solutions within the framework of the local limit of nonlocal gravity. This theory departs from Einstein's general relativity (GR) throu…
Gödel's Universe and the Local Limit of Nonlocal Gravity
Z. Mardaninezhad, B. Mashhoon
We consider the Gödel universe within the context of the local limit of nonlocal gravity. This theory differs from Einstein's general relativity (GR) through the existence of a sc…
Cosmic Jets in General Relativity
Bahram Mashhoon
In certain general relativistic time-dependent gravitational fields, free test particles can asymptotically line up relative to fiducial static observers and produce a cosmic jet w…
Elliptically Polarized Plane Gravitational Waves
Masoud Molaei, Shant Baghram, Bahram Mashhoon
Exact plane gravitational radiation fields are presented within the framework of general relativity and their properties are described. The physics of nonlinear elliptically polari…