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A Search for Radio-Quiet Gamma-Ray Pulsars

Chandler, A. M. and Koh, D. T. and Lamb, R. C. and Macomb, D. J. and Mattox, J. R. and Prince, T. A. and Ray, P. S. (2000) A Search for Radio-Quiet Gamma-Ray Pulsars. Astrophysical Journal, 556 (1). pp. 59-69. ISSN 0004-637X. doi:10.1086/321573.

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Most Galactic point sources of gamma rays remain unidentified. The few (extrasolar) sources that have been identified are all young, rotation-powered pulsars, all but one of which were identified using radio ephemerides. The radio-quiet Geminga pulsar was identified only after pulsations were discovered in a coincident X-ray source. Observational evidence indicates that many of the unidentified Galactic sources are likely to be pulsars, and some theoretical models predict a potentially large population of radio-quiet gamma-ray pulsars. We present a new method for performing sensitive gamma-ray pulsar searches. We used this method to search several of the strongest EGRET sources for pulsations. This was a blind search for new pulsars, covering a frequency and a frequency-derivative phase space large enough to detect Crab-like pulsars as well as lower frequency, high magnetic field "magnetars." No new pulsars were discovered, and we report upper limits constraining the characteristics of any signals contained in the data sets searched.

Item Type:Article
Related URLs:
URLURL TypeDescription
Prince, T. A.0000-0002-8850-3627
Ray, P. S.0000-0002-5297-5278
Additional Information:© 2001. The American Astronomical Society. A. M. C. would like to thank Stuart B. Anderson for helpful discussions. Access to the Intel Touchstone Delta computer system was provided by the Caltech Center for Advanced Computing Research. Basic research in X-ray astronomy at the Naval Research Laboratory is supported by the Office of Naval Research. This work was supported by NASA grants NAG 5-2833, NAGW-4761, and NAG5-3384.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
Office of Naval Research (ONR)UNSPECIFIED
Subject Keywords:gamma rays: observations; pulsars: general
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory2000-39
Issue or Number:1
Record Number:CaltechAUTHORS:20150219-162855332
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55035
Deposited By: Deborah Miles
Deposited On:20 Feb 2015 17:54
Last Modified:10 Nov 2021 20:40

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