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Two classes of glitches in the pulsar B1822-09

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Abstract

A large glitch has been detected in the pulsar B1822-09 (J1825-0935) using the LPA antenna of the Pushchino Observatory. This glitch occurred on January 15, 2007 and had a relative amplitude of Δν/ν ∼ 1.2 × 10−7 and a shape typical of classical glitches; i.e., it corresponded to a sudden, jump-like increase in the rotational velocity of the star within a day. The detection of this large, typical glitch together with the series of unusual, slow glitches discovered earlier in 1995–2004 indicates the existence of two classes of glitches in the rotational frequency of this pulsar. The presence of various classes of glitches in a single pulsar provides new possibilities for studying the mechanisms giving rise to glitches, which are a source of information about the internal structure of the neutron star. A possible interpretation of these results is discussed.

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Authors and Affiliations

  1. Pushchino Radio Astronomy Observatory, Astro Space Center, Lebedev Physical Institute, Russian Academy of Sciences, Moscow Region, Russia

    T. V. Shabanova

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  1. T. V. Shabanova
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Original Russian Text © T.V. Shabanova, 2009, published in Astronomicheskiĭ Zhurnal, 2009, Vol. 86, No. 5, pp. 505–511.

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Shabanova, T.V. Two classes of glitches in the pulsar B1822-09. Astron. Rep. 53, 465–471 (2009). https://doi.org/10.1134/S1063772909050102

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  • DOI: https://doi.org/10.1134/S1063772909050102

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