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GRASP Routines: Supernovae and other transient sources

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In any classification scheme for natural phenomena, the boundaries between classifications run the risk of becoming broad and blurry. While previous sections have avoided this by considering very narrowly defined classes of gravitational wave sources, this section considers a much broader class of sources, and as such is a kind of ``catch all'' for a variety of sources. These sources, however, all share in common two properties which unite them in terms of practical detection strategies:

  1. They produce gravitational radiation in the Ligo frequency and sensitivity band for a short time. The definition of short time is, of course, relative. However, if the time scale over which a source is visible to LIGO is of the order of days, as opposed to seconds, then it will likely be more suited to the analysis tools for quasi-periodic and periodic sources in section [*].
  2. Astrophysical models of these sources are somewhat crude. Those short lived sources from which the gravitational radiation can be modelled accurately enough to permit matched filtering, may be dealt with using the tools of earlier sections (cf. section [*]).
At the time of this writing, the sources which have these properties are thought to be primarily related to supernova events.



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Bruce Allen 2000-11-19