LIGO Document P070123-x0

Searching for gravitational waves from Cassiopeia A with LIGO

Document #:
LIGO-P070123-x0
Document type:
P - Publications
Abstract:
We describe a search underway for periodic gravitational waves from the central compact object in the supernova remnant Cassiopeia A. The object is the youngest likely neutron star in the Galaxy. Its position is well known, but the object does not pulse in any electromagnetic radiation band and thus presents a challenge in searching the parameter space of frequency and frequency derivatives. We estimate that a fully coherent search can, with a reasonable amount of time on a computing cluster, achieve a sensitivity at which it is theoretically possible (though not likely) to observe a signal even with the initial LIGO noise spectrum. Cassiopeia A is only the second object after the Crab pulsar for which this is true. The search method described here can also obtain interesting results for similar objects with current LIGO sensitivity.
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Notes and Changes:

Rev P070123-02-Z:
- Full document number: LIGO-P070123-02-Z
- Author(s): Karl Wette; Ben Owen; Bruce Allen; M. Ashley; Joe Betzweiser; Nelson Christensen; T. Creighton; Vladimir Dergachev; Iraj Gholami; Evan Goetz; Dr. Richard Gustafson; David Hammer; D I. Jones; B. Krishnan; Michael Landry; Bernd Machenschalk; David Mcclelland; Gregory Mendell; C. Messenger; M. Papa; Pinkesh Patel; Matt Pitkin; Holger Pletsch; R. Prix; Keith Riles; Llucia Sancho De La Jordana; Susan Scott; Alicia M. Sintes; M Trias; John T. Whelan; Graham Woan
- Document date: 2008-10-08
- Document received date: 2008-10-08
- Document entry date: 2008-10-08

Rev P070123-01-Z:
- Full document number: LIGO-P070123-01-Z
- Author(s): Karl Wette
- Document date: 2008-02-20
- Document received date: 2008-02-20
- Document entry date: 2008-02-20

Rev P070123-00-Z:
- Full document number: LIGO-P070123-00-Z
- Author(s): Karl Wette; Ben Owen
- Document date: 2007-10-17
- Document received date: 2007-10-17
- Document entry date: 2007-10-17
Journal References:
Published in Class Quant Grav vol. 25 pg. 235011 (8pp).

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