Volume 394, Number 2, November I 2002
|Page(s)||749 - 752|
|Published online||15 October 2002|
A note on gravitational wave lensing
Dipartimento di Fisica, Università di Lecce, and INFN, Sezione di Lecce, via Arnesano, CP 193, 73100 Lecce, Italy
2 Department of Mathematical Sciences, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
3 Department of Mathematics, Quaid-i-Azam University, Islamabad, Pakistan
Corresponding author: F. De Paolis, Francesco.DePaolis@le.infn.it
Accepted: 22 August 2002
In a recent paper (Ruffa [CITE]) it was proposed that the massive black hole at the Galactic center may act as a gravitational lens focusing gravitational wave energy to the Earth. Considering the gravitational wave signal emitted by galactic spinning pulsars, an enhancement in the gravitational wave intensity by a factor of a few thousand is found. For galactic and extra-galactic sources the intensity enhancement can be as high as 4000 and 17 000, respectively. In this note we consider the probability of significant signal enhancement from galactic and extra-galactic pulsars by the proposed mechanism and find that it is actually negligible. The lensing effect due to a possible companion object (a star or the galactic center black hole) of the gravitational wave source is also investigated in the framework of the classical microlensing theory.
Key words: gravitation / gravitational waves / gravitational lensing
© ESO, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.