Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2011-12-22
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
Contributed talk at the INTEGRAL conference "The Extreme and Variable High Energy Sky", September 19-23, 2011, Chia Laguna, Sa
Scientific paper
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 characterized by fast flares lasting only a very few days. Notably, no blazar-like counterparts are known within their error boxes so they could represent a completely new class of Galactic transient high energy emitters. The task of identifying their counterparts at lower energies remains very challenging. Despite this difficulty, INTEGRAL observations have provided intriguing hints that reliable candidate counterparts for these unidentified MeV-GeV transients could be found among the members of the recently discovered class of Supergiant Fast X-ray Transients (SFXTs). In this context, to date the best test case is represented by the association between the two sources IGR J17354-3255 and AGL J1734-3310. We will discuss their possible physical link and implications stemming from this association.
Bazzano Angela
Bird Andrew J.
Drave S. P.
Sguera Vito
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