Aql X-1 transition towards the soft (banana) state accompanied by radio/NIR detection

Authors
Publication date 2009
Journal The astronomer's telegram
Volume | Issue number 2302
Organisations
  • Faculty of Science (FNWI) - Anton Pannekoek Institute for Astronomy (API)
Abstract The currently active neutron star transient and atoll source Aql X-1 (Linares et al., ATEL #2288) has begun the transition from the hard (extreme island) state to the soft (banana) state (Rodriguez et al. ATEL #2299). This transition likely began around 2009 Nov 15 (MJD = 55150). The latest RXTE PCA observation (2009 Nov 17, MJD=55152.17+/-0.02, 2-60 keV fractional rms variability amplitude of ~11% for 0.1-10 Hz) indicates that the source is in the intermediate (island) state.
Document type Article
Note Aql X-1 transition towards the soft (banana) state accompanied by radio/NIR detection
Language English
Published at http://www.astronomerstelegram.org/?read=2302
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