Detecting Gravitational Waves with Millisecond Pulsars



Playing this video requires the latest flash player from Adobe.

Download link (right click and 'save-as') for playing in VLC or other f4v compatible player.


Recording Details

Speaker(s): 
Scientific Areas: 
Collection/Series: 
Subjects: 
PIRSA Number: 
12110044

Abstract

Millisecond
spin-period radio pulsars provide us with unique astronomical
"laboratories" for exploring fundamental physics in a variety of ways
-- from the physics of matter at super-nuclear density, to experimental tests
of gravity. They have also provided the only experimental evidence so far for
the existence of gravitational waves (GW).  A set of millisecond pulsars
acting as precise astronomical clocks may also be used as a direct GW detector,
sensitive to the nanohertz-frequency GW expected to be emitted by supermassive
black hole binary systems or other more exotic sources.  In this talk I
will present the project status and recent GW upper limits from the NANOGrav
project.  I will also discuss expected near-future improvements in the
measurement, including recent work aimed at better characterizing and
mitigating the effect of multi-path propagation effects in the interstellar
medium.