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arXiv 2112.01985astro-ph.HE
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G17 .8+16.7:一个新的超新星遗迹

G17.8+16.7: A New Supernova Remnant

Miguel Araya, Natasha Hurley-Walker, Sebastián Quirós-Araya

摘要:

在伽马射线源FHES J1723.5-0501的区域中检测到非热射电发射。发射具有直径为0.8度的近似圆形形状。观测结果证实它是一个新的超新星遗迹,G17.8+16.7。我们使用该地区的无线电数据和伽马射线观测得到的源参数的约束。到物体的距离可能在1.4-3.5千秒差距的范围内。信噪比年龄的顺序为10 kyr是兼容的无线电和GeV的功能,但不能排除一个更老或更年轻的信噪比。一个简单的单区轻子模型自然地解释了源在银河平面外的位置处的多波长非热通量。

英文摘要:

Non-thermal radio emission is detected in the region of the gamma-ray source FHES J1723.5-0501. The emission has an approximately circular shape 0.8 degrees in diameter. The observations confirm its nature as a new supernova remnant, G17.8+16.7. We derive constraints on the source parameters using the radio data and gamma-ray observations of the region. The distance to the object is possibly in the range 1.4-3.5 kpc. An SNR age of the order of 10 kyr is compatible with the radio and GeV features, but an older or younger SNR cannot be ruled out. A simple one-zone leptonic model naturally explains the multi-wavelength non-thermal fluxes of the source at its location outside the Galactic plane.

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