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Activity Number:
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45
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Type:
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Invited
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Date/Time:
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Sunday, July 29, 2007 : 4:00 PM to 5:50 PM
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Sponsor:
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IMS
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| Abstract - #308126 |
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Title:
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Statistical Issues in Detecting Gamma-Ray Pulsars
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Author(s):
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John Rice*+
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Companies:
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University of California, Berkeley
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Address:
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Department of Statistics, Berkeley, CA, 94720-3860,
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Keywords:
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TBA
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Abstract:
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I will discuss our on-going work on methodology for detecting gamma- ray pulsars from data consisting of the arrival times and energies of individual photons. I will discuss a family of detection procedures---weighted quadratic test statistics arising from a score test. The likelihood function models the photon arrival process as a mixture from background and source and takes into account the point spread function and the energies of the photons with the result that a weight is associated with each photon. The power of the test can be analyzed rather explicitly. On the computational side, searching over a range of frequency and frequency drift can be a daunting task, even for a record consisting of only a thousand events or so, and in some situations a tradeoff between power and computation must be made.
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- The address information is for the authors that have a + after their name.
- Authors who are presenting talks have a * after their name.
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