Discovery of Burst Oscillations in the Intermittent Accretion-Powered Millisecond Pulsar HETE J1900.1-2455

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

The Astrophysical Journal Letters, Volume 698, Issue 2, pp. L174-L177 (2009).

Fecha de publicación:
6
2009
Número de autores
11
Número de autores del IAC
0
Número de citas
24
Número de citas referidas
21
Descripción
We report the discovery of burst oscillations from the intermittent accretion-powered millisecond pulsar (AMP) HETE J1900.1-2455, with a frequency ~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.