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arXiv · 0904.2383

Discovery of burst oscillations in the intermittent accretion-powered millisecond pulsar HETE J1900.1-2455

Anna L. Watts·Diego Altamirano·Manuel Linares·Alessandro Patruno·Piergiorgio Casella·Yuri Cavecchi·Nathalie Degenaar·Nanda Rea·Paolo Soleri·Michiel van der Klis·Rudy Wijnands
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Abstract

We report the discovery of burst oscillations from the intermittent accretion-powered millisecond pulsar (AMP) HETE J1900.1-2455, with a frequency approximately 1 Hz below the known spin frequency. The burst oscillation properties are far more similar to those of the non-AMPs and Aql X-1 (an intermittent AMP with a far lower duty cycle), than those of the AMPs SAX J1808.4-3658 and XTE J1814-338. We discuss the implications for models of the burst oscillation and intermittency mechanisms.

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Anna L. Watts, Diego Altamirano, Manuel Linares, Alessandro Patruno, Piergiorgio Casella, Yuri Cavecchi, Nathalie Degenaar, Nanda Rea, Paolo Soleri, Michiel van der Klis, Rudy Wijnands. 2009-04-15. Discovery of burst oscillations in the intermittent accretion-powered millisecond pulsar HETE J1900.1-2455. https://doi.org/10.1088/0004-637x%2F698%2F2%2Fl174

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