2009/06/05 by Fiamma Capitanio, T. Belloni, Tomaso Belloni +4 · 1 citation
Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Astrophysics and Cosmic Phenomena #Binary number #Black hole (networking) #Diagram #Galaxy #Luminosity #Orbital inclination #Physics #Pulsars and Gravitational Waves Research #Spectral properties #Swift #Transient (computer programming) #astro-ph.HE #astro-ph.SR
paper · pdf · doi:10.1111/j.1365-2966.2009.15196.x
accepted for publication in MNRAS
arxiv created 2009/06/05 · openalex publication_date 2009/07/31 · arxiv updated 2015/05/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We report on a campaign of X-ray and soft γ-ray observations of the black hole candidate (BHC) H1743−322 (also named IGR J17464-3213), performed with the RXTE, INTEGRAL and Swift satellites. The source was observed during a short outburst between 2008 October 03 and November 16. The evolution of the hardness–intensity diagram throughout the outburst is peculiar, in that it does not follow the canonical pattern through all the spectral states (the so-called q-track pattern) seen during the outburst of black hole transients. On the contrary, the source only makes a transition from the hard state to the hard–intermediate state. After this transition, the source decreases in luminosity and its spectrum hardens again. This behaviour is confirmed by both spectral and timing analyses. This kind of outburst has been rarely observed before in a transient BHC.