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SFXTs as best candidate counterparts of unidentified transient MeV-GeV sources: the test case of IGR J17354-3255/AGL J1734-3310
V. Sguera, A. Bazzano, A. J. Bird +1
In the last few years Fermi and AGILE observations have indicated the existence of a possible population of transient MeV-GeV sources located on the Galactic plane and characterize…
The XMM-Newton view of Supergiant Fast X-ray Transients: the case of IGRJ16418-4532
L. Sidoli, S. Mereghetti, V. Sguera +1
We report on a 40 ks long, uninterrupted X-ray observation of the candidate supergiant fast X-ray transient (SFXT) IGRJ16418-4532 performed with XMM-Newton on February 23, 2011. Th…
IGR J17354-3255 as a candidate intermediate SFXT possibly associated with the transient MeV AGL J1734-3310
V. Sguera, S. P. Drave, A. J. Bird +3
We present spectral and temporal results from INTEGRAL long-term monitoring of the unidentified X-ray source IGR J17354-3255. We show that it is a weak persistent hard X-ray source…
XMM-Newton discovery of a possible cyclotron emission feature from the SFXT IGR J18483-0311
V. Sguera, L. Sidoli, A. Bazzano +2
We report the results from an archival XMM-Newton observation of the Supergiant Fast X-ray Transient (SFXT) IGR J18483-0311 during its apastron passage. The measured 0.5--10 keV lu…
Temporal Studies of Supergiant Fast X-ray Transients
S. P. Drave, A. J. Bird, D. J. Clark +6
SFXTs are a new class of HMXB unveiled by INTEGRAL. They are extreme systems characterised by very short outbursts (a few hours) and extreme X-ray luminosity dynamic ranges (~10^{4…