Association of the supernova remnant G 65.3+5.7 with ambient neutral hydrogen and a possible nature of the remnant |
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Authors: | I V Gosachinskii |
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Institution: | 1.Special Astrophysical Observatory, St. Petersburg Branch,Russian Academy of Sciences,Pulkovo, St. Petersburg,Russia |
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Abstract: | The neutral hydrogen at 21 cm has been investigated with the RATAN-600 radio telescope around the supernova remnant G 65.3+5.7,
which has the largest angular sizes in the group of shell remnants. An expanding HI shell left after an old supernova explosion
with an energy of ∼1051 erg and an age of 440 000 yr coincident in coordinates with the radio and optical remnant has been discovered. Since an X-ray
emission from a much younger (27 000 yr) supernova remnant is observed in the same region and the shells detected by nebular
lines have probably intermediate ages, we suggest that several successive supernova explosions have occurred here. |
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