Le contenu de cette page n’est pas disponible en français. Veuillez nous en excuser.
 

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.