Journal
ASTRONOMY & ASTROPHYSICS
Volume 502, Issue 1, Pages 21-25Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/200912131
Keywords
X-rays: binaries; stars: binaries: eclipsing; stars: individual: IGR J16479-4514; stars: neutron; X-rays: stars
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Funding
- ASI
- MIUR
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Aims. The supergiant fast X-ray transient source IGR J16479-4514 was observed in outburst two times with Swift. Its quiescent state was investigated in-depth only once in 2008 through a relatively long pointed observation with XMM-Newton. The latter observation was taken about 1.7 days after the outburst in 2008, and showed an X-ray eclipse-like event, likely caused by the supergiant companion. At present, this is the only supergiant fast X-ray transient that displayed an evidence for an X-ray eclipse. Methods. Here we carry out a comparison between the most recent outburst of IGR J16479-4514, caught by Swift on 29 January 2009 and those detected previously from this source. Results. The decay from the outbursts in 2005, 2008 and 2009 presents many similarities, and suggests a common mechanism that modulates the mass accretion rate onto the neutron star in IGR J16479-4514.
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