SETI public: Unknown class of transient radio source labeled white dwarf pulsar

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From: LARRY KLAES (ljk4_at_msn.com)
Date: Thu Aug 11 2005 - 13:14:58 UTC

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    Paper: astro-ph/0508213
    Date: Tue, 9 Aug 2005 17:47:17 GMT (10kb)

    Title: GCRT J1745-3009 as a Transient White Dwarf Pulsar

    Authors: Bing Zhang (UNLV), Janusz Gil (Zielona Gora Univ. & UNLV)

    Comments: 4 pages, submitted to ApJL
    \\
    A transient radio source in the direction of the Galactic Center, GCRT
    J1745-3009, exhibited 5 peculiar consecutive outbursts at 0.33 GHz with a
    period of 77.13 minutes and a duration of ~10 minutes for each outburst. It
    has
    been claimed to be the prototype of a hitherto unknown class of transient
    radio
    sources. We interpret it as a transient white dwarf pulsar with a period of
    77.13 minutes. The ~10-minute flaring duration corresponds to the epoch when
    the radio beam sweeps our line of sight. The bursting epoch corresponds to
    the
    episodes when stronger sunspot-like magnetic fields emerge into the white
    dwarf
    polar cap region during which the pair production condition is satisfied and
    the white dwarf behaves like a radio pulsar. It switches off as the pair
    production condition breaks down.

    \\ ( http://arXiv.org/abs/astro-ph/0508213 , 10kb)

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