Spectral Analysis of Timing Noise in NANOGrav Pulsars

Details Spectral Analysis of Timing Noise in NANOGrav Pulsars Spectral Analysis of Timing Noise in NANOGrav Pulsars

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21914622p&link_type=abstract

American Astronomical Society, AAS Meeting #219, #146.22

Astronomy and Astrophysics

Astronomy

Scientific paper

The NANOGrav collaboration seeks to detect gravitational waves from distant supermassive black hole sources using a pulsar timing array. In order to search for gravitational waves, it is necessary to have a good characterization of the timing noise for each pulsar of the pulsar timing array. Red noise is common in millisecond pulsars, and we need to quantify how much red noise is present for each pulsar. This can be done by looking at the power spectra of the pulsar timing residuals. However because the pulsar data are non-uniformly sampled, one cannot simply do a Fourier analysis. Also, commonly used least-square fitting methods such as the Lomb-Scargle analysis are not adequate for steep red spectra. Instead, we compute the power spectra of NANOGrav pulsar timing residuals using the Cholesky transformation, which eliminates spectral leakage. This is done with the help of the TEMPO2 ``SpectralModel" plugin developed by William Coles and George Hobbs.

Affiliated with

Also associated with

No associations

Rating

Spectral Analysis of Timing Noise in NANOGrav Pulsars 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 Spectral Analysis of Timing Noise in NANOGrav Pulsars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectral Analysis of Timing Noise in NANOGrav Pulsars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1576273