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Searching for gravitational waves from Cassiopeia A with LIGO

Wette, K. and Owen, B. J. and Allen, B. and Ashley, M. and Betzwieser, J. and Christensen, N. and Creighton, T. D. and Dergachev, V. and Gholami, I. and Goetz, E. and Gustafson, R. and Hammer, D. and Jones, D. I. and Krishnan, B. and Landry, M. and Machenschalk, B. and McClelland, D. E. and Mendell, G. and Messenger, C. J. and Papa, M. A. and Patel, P. and Pitkin, M. and Pletsch, H. J. and Prix, R. and Riles, K. and Sancho de la Jordana, L. and Scott, S. M. and Sintes, A. M. and Trias, M. and Whelan, J. T. and Woan, G. (2008) Searching for gravitational waves from Cassiopeia A with LIGO. Classical and Quantum Gravity, 25 (23). Art. No. 235011. ISSN 0264-9381.

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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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Additional Information:Copyright © 2008 Institute of Physics. Received 17 June 2008, in final form 3 September 2008. Published 17 November 2008. Print publication: Issue 23 (7 December 2008). We are grateful to the LSC internal reviewers for helpful comments on the manuscript. This work was supported by Australian Research Council grant DP-0770426 and USA National Science Foundation grants PHY-0245649, PHY-0555628, and cooperative agreement PHY-0114375 (the Penn State Center for Gravitational Wave Physics). This paper has been assigned LIGO document number P070123-02-Z.
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Australian Research CouncilDP-0770426
National Science FoundationPHY-0245649
National Science FoundationPHY-0555628
National Science FoundationPHY-0114375
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Other Numbering System NameOther Numbering System ID
LIGO DocumentP070123-02-Z
Issue or Number:23
Record Number:CaltechAUTHORS:WETcqg08
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12556
Deposited By: Archive Administrator
Deposited On:12 Dec 2008 18:53
Last Modified:03 Oct 2019 00:29

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