English

Swift observations of IGRJ16479-4514 in outburst

High Energy Astrophysical Phenomena 2015-05-13 v1 Astrophysics of Galaxies

Abstract

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. Here we carry out a comparison between the most recent outburst of IGRJ16479-4514, caught by Swift on 29 January 2009 and those detected previously from this source. 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 IGRJ16479-4514.

Keywords

Cite

@article{arxiv.0906.0883,
  title  = {Swift observations of IGRJ16479-4514 in outburst},
  author = {E. Bozzo and A. Giunta and L. Stella and M. Falanga and G. Israel and S. Campana},
  journal= {arXiv preprint arXiv:0906.0883},
  year   = {2015}
}

Comments

Accepted for publication in A&A