Beating the spin-down limit on gravitational wave emission from the Vela pulsar

Details Beating the spin-down limit on gravitational wave emission from the Vela pulsar Beating the spin-down limit on gravitational wave emission from the Vela pulsar

2011-04-14

arxiv.org/abs/1104.2712v2

Astrophys.J.737:93,2011

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

37 pages, 6 figures corrected typo in the Authors field

Scientific paper

10.1088/0004-637X/737/2/93

We present direct upper limits on continuous gravitational wave emission from the Vela pulsar using data from the Virgo detector's second science run. These upper limits have been obtained using three independent methods that assume the gravitational wave emission follows the radio timing. Two of the methods produce frequentist upper limits for an assumed known orientation of the star's spin axis and value of the wave polarization angle of, respectively, $1.9\ee{-24}$ and $2.2\ee{-24}$, with 95% confidence. The third method, under the same hypothesis, produces a Bayesian upper limit of $2.1\ee{-24}$, with 95% degree of belief. These limits are below the indirect {\it spin-down limit} of $3.3\ee{-24}$ for the Vela pulsar, defined by the energy loss rate inferred from observed decrease in Vela's spin frequency, and correspond to a limit on the star ellipticity of $\sim 10^{-3}$. Slightly less stringent results, but still well below the spin-down limit, are obtained assuming the star's spin axis inclination and the wave polarization angles are unknown.

Affiliated with

Also associated with

No associations

Rating

Beating the spin-down limit on gravitational wave emission from the Vela pulsar does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Beating the spin-down limit on gravitational wave emission from the Vela pulsar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Beating the spin-down limit on gravitational wave emission from the Vela pulsar will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-165581