منابع مشابه
Outbursts from IGR J 17473 - 2721
Aims. IGR J17473-2721 was discovered by INTEGRAL as a neutron star low mass X-ray binary. To date, two outbursts have been detected in X-rays by RXTE/ASM and SWIFT : the one occurring in 2005 was weak and was characterized by a low/hard state spectrum; the one of March 2008 was strong and showed a 6-step evolution in its flux. We investigate their evolution, emphasizing the later outburst. Meth...
متن کاملNew outbursts of the black hole candidate H1743-322/IGR J17464-3213 observed by INTEGRAL
On March 2003, INTEGRAL/IBIS detected an outburst from a new source, IGR J17464-3213, that turned out to be a HEAO-1 transient, namely H1743-322. Its flux decayed below the RXTE PCA sensitivity limit in November 2003. On July 3, 2004 the source was again detected by RXTE/PCA reaching an intensity of ∼70 mCrab in the 2-10 keV band. Another outburst was observed in August 2005. A multiwavelength ...
متن کاملMonitoring Supergiant Fast X-ray Transients with Swift. Iii. Outbursts of the Prototypical Sfxts Igr J17544−2619 and Xte
IGR J17544−2619 and XTE J1739−302 are considered the prototypical sources of the new class of High Mass X–ray Binaries, the Supergiant Fast X–ray Transients (SFXTs). These sources were observed during bright outbursts on 2008 March 31 and 2008 April 8, respectively, thanks to an on-going monitoring campaign we are performing with Swift, started in October 2007. Simultaneous observations with XR...
متن کاملObservations of giant outbursts from Cygnus X-1
We present interplanetary network localization, spectral, and time history information for 7 episodes of exceptionally intense gamma-ray emission from Cygnus X-1. The outbursts occurred between 1995 and 2003, with durations up to ∼28000 seconds. The observed 15 300 keV peak fluxes and fluences reached 3 × 10−7 erg cm−2s−1 and 8 × 10−4 erg cm−2 respectively. By combining the triangulations of th...
متن کاملTransient Phenomena and Outbursts from Galactic Black-hole Candidates
The RossiXTE mission provided us with an unprecedentedly large database of X-ray observations of transient black-hole candidates. These systems are crucial for the understanding of the physical properties of mass accretion onto black holes. Here I review the results on a selected sample of systems and describe their behavior in a purely phenomenological way. From these results, we can derive a ...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2009
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/200911636