DISSECTING THE REGION OF 3EG J1837–0423 AND HESS J1841–055 WITH INTEGRAL
DISSECTING THE REGION OF 3EG J1837–0423 AND HESS J1841–055 WITH INTEGRAL
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使用积分剖析 3EG J1837–0423 和 HESS J1841–055 的区域
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
L. Bassani
中科院分区：
文献类型：
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作者：
V. Sguera;G. Romero;A. Bazzano;N. Masetti;A. Bird;L. Bassani
3EG J1837-0423和HESS J1841-055是两个位于天空中同一区域的不明和特殊的高能量源，相隔约1.4°。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的高能发射与通过国际伽马射线天体物理实验室对天区的深空观测探测到的X射线（4-20 keV）和软γ射线（20-100 keV）候选对应物相匹配。因此，我们建议超巨星快速X射线瞬变（SFXT）AX J1841.0-0536作为3EG J1837-0423的可能候选对应物，基于空间邻近性和瞬态行为。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，理论上的方案也支持拟议的协会，其中AX J1841.0-0536是一个低磁化脉冲星，由于吸积的大质量团块从超巨星伴星施主星星，经历零星的变化，瞬态Atoll状态，磁塔可以产生瞬态射流，因此高能量的排放。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。
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°. 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 γ-rays (20–100 keV) candidate counterparts detected through deep International Gamma-Ray Astrophysics Laboratory observations of the sky region. As a result we propose the Supergiant Fast X-ray Transient (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.