Journal
ASTRONOMY & ASTROPHYSICS
Volume 548, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201220085
Keywords
stars: neutron; pulsars: individual: 4U 1907+09; X-rays: binaries
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Funding
- Deutsches Zentrums fur Luft- und Raumfahrt (DLR)
- Deutsche Forschungsgemeinshaft (DFG) [DLR 50 OR 0702]
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We have investigated the dipping activity observed in the high-mass X-ray binary 4U 1907+09 and shown that the source continues to pulsate in the off state, noting that the transition between the on and off states may be either dip-like or flare-like. This behavior may be explained in the framework of the gated accretion scenario proposed to explain the flares in supergiant fast X-ray transients (SFXTs). We conclude that 4U 1907+09 might prove to be a missing link between the SFXTs and ordinary accreting pulsars.
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