School of Astroparticle Physics
May 27th - June 1st, 2013
OHP, Saint Michel l'Observatoire

Gravitational Waves

Transient gravitational wave search techniques

Marie-Anne BIZOUARD
Laboratoire de l'accélérateur linéaire (LAL)

Course
While waveforms of many astrophysical sources emitting short duration gravitational waves are well modelled, there are many promising sources for which prediction is still uncertain and requires robust data processing methods. Dealing with non-Gaussian data is one of the challenges. Including multi-messenger information is another aspect of these searches.
Chapters
  1. Introduction
    1. Astrophysical sources and signal characteristcis
    2. Gravitational wave detector's data characteristics
    3. Challenges - what matters?
  2. Techniques
    1. From all-sky/all-time to triggered searches
    2. Data processing pipelines
    3. Dealing with non-Gaussian data
  3. Some results


Abstract
I will review the current efforts to search for un-modelled transient gravitational wave signals in interferometric gravitational wave detectors' data. The astrophysical sources tackled by these searches will be described as well as the astrophysics outcome, including multi-messenger new field developements. I will especially explain what are the challenges of the searches, the techniques used to extract the signals and to reduce the background. The most recent results will serve as illustrations.
Bibliography
  • General review
    • B.S. Sathyaprakash and Bernard F. Schutz, "Physics, Astrophysics and Cosmology with Gravitational Waves", Living Rev. Relativity 12 (2009)  2, http://www.livingreviews.org/lrr-2009-2
  • Core collapse supernova
    • Chris L. Fryer and Kimberly C.B. New, "Gravitational Waves from Gravitational Collapse", Living Rev. Relativity 14 (2011)  1, http://www.livingreviews.org/lrr-2011-1
    • C. Ott, "The Gravitational Wave Signature of Core-Collapse Supernovae",
      Class. Quant. Grav. 26 (2009) 063001
  • Methods
    • Bernard F. Schutz, "Networks of gravitational wave detectors and three figures of merit"
      Class. Quant. Grav. 28 (2011) 125023
    • S. Klimenko et al, "Localization of gravitational wave sources with networks of advanced detectors"
      Phys. Rev. D83 (2011) 102001
    • J. Aasi et al (The LIGO Scientific Collaboration and the Virgo collaboration)
      Class.Quant.Grav. 29 (2012) 155002

 

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