Volume 502, Number 1, July IV 2009
|Page(s)||21 - 25|
|Published online||15 June 2009|
Swift observations of IGR J16479-4514 in outburst
ISDC, Geneva Observatory, University of Geneva, Chemin d'Ecogia 16, 1290 Versoix, Switzerland
2 INAF - Osservatorio Astronomico di Roma, Via Frascati 3300044 Rome, Italy e-mail: email@example.com
3 Dipartimento di Fisica - Università di Roma Tor Vergata, via della Ricerca Scientifica 1, 00133 Rome, Italy
4 International Space Science Institute, Hallerstrasse 6, 3012 Bern, Switzerland
5 INAF Osservatorio Astronomico di Brera, via Emilio Bianchi 46, 23807 Merate (LC), Italy
Accepted: 29 May 2009
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.
Key words: X-rays: binaries / stars: binaries: eclipsing / stars: individual: IGR J16479-4514 / stars: neutron / X-rays: stars
© ESO, 2009
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.