Discovery of kilohertz QPOs in RXTE observations of SAX J1748.9-2021

D. Altamirano, A. Patruno, A. Watts, M. Armas Padilla, Y. Cavecchi, N. Degenaar, M. Kalamkar, R. Kaur, P. Soleri, Y.J. Yang, M. van der Klis, R. Wijnands, P. Casella, M. Linares, N. Rea

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Abstract

We report on RXTE observations of the ongoing outburst of the accreting millisecond X-ray pulsar SAX J1748.9-2021 (Altamirano et al. 2008, 674, 45A, see ATEL #2360 and #2407). Since the first detection of intermittent pulsations on January 27th, 2010, observations have been carried out on a daily basis. The source remained between 120 and 160 mCrab (2-16 keV - see ATEL #2407) until February 3rd, when the intensity started to decrease.
Original languageEnglish
JournalThe Astronomer's Telegram
Volume2426
Publication statusPublished - Feb-2010

Keywords

  • X-ray
  • Binaries
  • Globular Clusters
  • Neutron Stars
  • Pulsars
  • Transients

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