Gravitational Shapiro phase shift on pulsars' period to detect Dark Matter
Abstract
The Shapiro Phase Shift on Pulsars (SPSP) influence at low , but detectable level the pulsars' (PSR) periods and their derivatives. This effect may be already written in PSRs' time derivative deviation and in particular it may explain the presence of a few negative pulse derivatives among 558 known PSRs. We describe in detail the phenomenon and predict that the SPSP may play a role in period derivative deviations for just a few PSRs a year ( 0.5 - 5 ev / yr) at a positive period derivative 10^-14 - 10^-15 s/s level , leading to a plausible explanation to the puzzling negative pulse derivative of few PSRs' periods.
Cite
@article{arxiv.astro-ph/9603145,
title = {Gravitational Shapiro phase shift on pulsars' period to detect Dark Matter},
author = {D. Fargion and R. Conversano},
journal= {arXiv preprint arXiv:astro-ph/9603145},
year = {2015}
}
Comments
replace due to uncorrect e-mail transfer. No substantial text modifications have been made. 13 pages latex file , article , a complete ps file is available via anonymous ftp://hpteo.roma1.infn.it/pub/preprints/fargion/shapiro.ps