G126.2+1.6, a supernova remnant near the X-ray transient 4U 0115+63

Astronomy and Astrophysics – Astronomy

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Radio Astronomy, Stellar Radiation, Supernova Remnants, X Ray Sources, Chronology, Distance, Spectrum Analysis, Telescopes

Scientific paper

Results are reported for 1400- and 2700-MHz radio continuum observations of a faint supernova remnant (SNR) 68 arcmin in diameter located near the known SNR G127.1+0.5 and the transient X-ray source 4U 0115+63. A spectral index of 0.85 + or - 0.15 is derived for the faint SNR, which is designated G126.2+1.6. A diameter of 90 pc is obtained for this source, along with a distance of 127 pc above the galactic plane, a distance of 4.5 kpc from the sun, and an age of about 270,000 yr. It is concluded that G126.2+1.6 and 4U 0115+63 are good candidates for a physical association.

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