用INTEGRAL解剖3EG J1837-0423和HESS J1841-055的区域
Dissecting the region of 3EG J1837-0423 and HESS J1841-055 with INTEGRAL
摘要：
3EG J1837-0423和HESS J1841-055是两个位于天空同一区域的不明和特殊的高能量源，相隔1.4度。具体来说，3EG J1837-0423是EGRET在持续几天的耀斑活动期间仅检测到一次的瞬态MeV对象，而HESS J1841-055是高度扩展的TeV源。我们试图将来自不明来源3EG J1837-0423和HESS J1841-055的高能发射与通过天空区域的深积分观测检测到的X射线（4-20 keV）和软伽马射线（20-100 keV）候选对应物相匹配。因此，我们建议SFXT AX J1841.0-0536作为3EG J1837-0423的可能候选对应物，基于空间接近度和瞬态行为。或者，AX J1841.0-0536可能是扩展源HESS J1841-055的全部TeV发射的至少一部分，基于惊人的空间相关性。无论是哪种情况，从能量的角度来看，理论上也支持这个关联，其中AX J1841.0-0536是一颗低磁化的脉冲星，由于来自超巨星伴星的大质量团块的吸积，它经历了到瞬态Atoll状态的零星变化，在瞬态Atoll状态下，磁塔可以产生瞬态喷流，从而产生高能辐射。无论哪种情况（与3EG J1837-0423或HESS J1841-055有关），AX J1841.0-0536都可能是一类新的银河系瞬时MeV/TeV发射体的原型。
英文摘要：
3EG J1837-0423 and HESS J1841-055 are two unidentified and peculiar high-energy sources located in the same region of the sky, separated by 1.4 deg. Specifically, 3EG J1837-0423 is a transient MeV object detected by EGRET only once during flaring activity that lasted a few days while HESS J1841-055 is a highly extended TeV source. We attempted to match the high-energy emission from the unidentified sources 3EG J1837-0423 and HESS J1841-055 with X-rays (4-20 keV) and soft gamma-rays (20-100 keV) candidate counterparts detected through deep INTEGRAL observations of the sky region. As a result we propose the SFXT AX J1841.0-0536 as a possible candidate counterpart of 3EG J1837-0423, based on spatial proximity and transient behavior. Alternatively, AX J1841.0-0536 could be responsible for at least a fraction of the entire TeV emission from the extended source HESS J1841-055, based on a striking spatial correlation. In either case, the proposed association is also supported from an energetic standpoint by a theoretical scenario where AX J1841.0-0536 is a low magnetized pulsar which, due to accretion of massive clumps from the supergiant companion donor star, undergoes sporadic changes to transient Atoll-states where a magnetic tower can produce transient jets and as a consequence high-energy emission. In either case (by association with 3EG J1837-0423 or alternatively with HESS J1841-055), AX J1841.0-0536 might be the prototype of a new class of Galactic transient MeV/TeV emitters.
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