Bibcode
                                    
                            Tudose, V.; Tzioumis, A.; Patruno, A.; Linares, M.; Soleri, P.; Russell, D.
    Bibliographical reference
                                    The Astronomer's Telegram, #2138
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                        7
            
                        2009
            
  Citations
                                    0
                            Refereed citations
                                    0
                            Description
                                    Swift J1756.9-2508 was discovered by the X-ray satellite Swift during an
outburst in 2007 (ATEL #1105) and recognized immediately as an
accretion-driven millisecond X-ray pulsar (ATEL #1108). No radio
pulsations (ATEL #1129) and no continuum radio emission (ATEL #1128)
were detected then. While the radio pulsation search was performed
during the outburst, the continuum observations were carried out when
the X-ray flux levels already decreased below the detection limit of
Swift.