NASA NTRS · 19890032997
A search for optical millisecond pulsars in globular clusters
Abstract
A search for millisecond optical pulsars in several bright, compact globular clusters was conducted. The sample included M28, and the X-ray clusters 47 Tuc, NGC 6441, NGC 6624, M22, and M15. The globular cluster M28 contains the recently discovered 327 Hz radio pulsar. Upper limits of 4 sigma to pulsed emission of (1-20) solar luminosities were found for the globular clusters tested, and 0.3 solar luminosity for the M28 pulsar for frequencies up to 500 Hz.
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Middleditch, J. H., Imamura, J. N., Steiman-Cameron, T. Y.. 1988-12-15. A search for optical millisecond pulsars in globular clusters. https://ntrs.nasa.gov/citations/19890032997
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