SRG/eROSITA discovery of a large circular SNR candidate G116.6-26.1: SN Ia explosion probing the gas of the Milky Way halo?

@inproceedings{EMChurazov2021SRGeROSITADO,
  title={SRG/eROSITA discovery of a large circular SNR candidate G116.6-26.1: SN Ia explosion probing the gas of the Milky Way halo?},
  author={E.M.Churazov and I.I.Khabibullin and A.M.Bykov and N.N.Chugai and R.A.Sunyaev and I.I.Zinchenko},
  year={2021}
}
We report a discovery of a new X-ray-selected supernova remnant (SNR) candidate SRGe J0023+3625 = G116.6-26.1 found in the SRG/eROSITA all-sky survey. The source features a large angular extent (∼ 4 deg in diameter), nearly circular shape and X-ray spectrum dominated by emission lines of heliumand hydrogen-like oxygen. It lacks bright counterparts of similar extent at other wavelengths which could be unequivocally associated with it. Given the relatively high Galactic latitude of the source, b… Expand

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