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arXiv · 2112.01985

G17.8+16.7: A New Supernova Remnant

Miguel Araya·Natasha Hurley-Walker·Sebastián Quirós-Araya
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Abstract

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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Miguel Araya, Natasha Hurley-Walker, Sebastián Quirós-Araya. 2021-12-03. G17.8+16.7: A New Supernova Remnant. https://doi.org/10.1093/mnras%2Fstab3550

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