Citation

BibTex format

@article{Golat:2021:10.1016/j.physletb.2021.136381,
author = {Golat, S and Contaldi, CR},
doi = {10.1016/j.physletb.2021.136381},
journal = {Physics Letters B: Nuclear Physics and Particle Physics},
pages = {1--4},
title = {Geodesic noise and gravitational wave observations by pulsar timing arrays},
url = {http://dx.doi.org/10.1016/j.physletb.2021.136381},
volume = {818},
year = {2021}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Signals from millisecond pulsars travel to us on geodesics along the line-of-sight that are affected by the space–time metric. The exact path-geometry and redshifting along the geodesics determine the observed Time-of-Arrival (ToA) of the pulses. The metric is determined by the distribution of dark matter, gas, and stars in the galaxy and, in the final stages of travel, by the distribution of solar system bodies. The inhomogeneous distribution of stellar masses can have a small but significant statistical effect on the ToAs through the perturbation of geodesics. This will result in additional noise in ToA observations that may affect Pulsar Timing Array (PTA) constraints on gravitational waves at very low frequencies. We employ a simple model for the stellar distribution in our galaxy to estimate the scale of both static and dynamic sources of what we term generically “geodesic noise”. We find that geodesic noise has a standard deviation of (10) ns for typical lines-of-sight. This suggests geodesic noise is relevant for estimates of PTA sensitivity and may limit future efforts for detection of gravitational waves by PTAs.
AU  - Golat,S
AU  - Contaldi,CR
DO  - 10.1016/j.physletb.2021.136381
EP  - 4
PY  - 2021///
SN  - 0370-2693
SP  - 1
TI  - Geodesic noise and gravitational wave observations by pulsar timing arrays
T2  - Physics Letters B: Nuclear Physics and Particle Physics
UR  - http://dx.doi.org/10.1016/j.physletb.2021.136381
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000662629500008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.sciencedirect.com/science/article/pii/S037026932100321X?via%3Dihub
UR  - http://hdl.handle.net/10044/1/93463
VL  - 818
ER  -
Download

Note to staff:  Adding new publications to a research group

  1. Log in to Symplectic.
  2. Click on Menu > Create Links
  3. Choose what you want to create links between – in this case ‘Publications’ and ‘Organisational structures’.
  4. Choose the organisational structure (research group) into which you want to link the publications and check the box next to it.
  5. Now check the box of any publication you want to add to that group. You can use the filters to find what you want and select multiple publications if necessary. 
  6. Scroll to the bottom and click the blue ‘Create new link’ button to link them.
  7. The publications will be added to the group, and will be displayed on the group publications feed within 24 hours (it is not immediate).

Any problems, talk to Tim Evans or the Faculty Web Team.