A failed outburst of H1743-322

作者：Capitanio F^*; Belloni T; Del Santo M; Ubertini P

来源：Monthly Notices of the Royal Astronomical Society, 2009, 398(3): 1194-1200.

DOI：10.1111/j.1365-2966.2009.15196.x

• black hole physics
• X-rays: binaries
• X-rays: individual: H1743-322
• X-rays: individual: IGR J17464-3213
• X-rays: stars

We report on a campaign of X-ray and soft gamma-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.

• 出版日期2009-9-21