Discovery of 0.19 Hz QPO in MAXI J1409-619

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

Research output: Contribution to journalArticle


The RXTE has been monitoring the new transient X-ray source MAXI J1409-619 since its discovery on October 20, 2010 (Yamaoka et al 2010, ATEL # 2959) . We analyzed the observations of this source performed on December 11, 2010 during the current re-brightening of the source (Ueno et al 2010, ATEL # 3067). The observation lasted for a total exposure time of about 20 ks. We detect a quasi-periodic oscillation (QPO) with a centroid frequency 0.192 +/- 0.006 Hz and with a width of 0.029 +/- 0.013 Hz.
Original languageEnglish (US)
JournalThe Astronomer's Telegram
StatePublished - Dec 1 2010


  • X-ray
  • Binary
  • Neutron Star
  • Transient
  • Pulsar


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