Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-08-05
Astron.Astrophys. 394 (2002) 533-538
Astronomy and Astrophysics
Astrophysics
7 pages, including 2 figures, uses aa.cls v5.1; A&A in press
Scientific paper
10.1051/0004-6361:20021143
The possible association of the supernova remnant (SNR) G 343.1-2.3 with the pulsar PSR B 1706-44 (superposed on the arclike "shell" of the SNR) has been questioned by some authors on the basis of an inconsistency between the implied and measured (scintillation) transverse velocities of the pulsar, the absence of any apparent interaction between the pulsar and the SNR's "shell", and some other indirect arguments. We suggest, however, that this association could be real if both objects are the remnants of a supernova (SN) which exploded within a mushroom-like cavity (created by the SN progenitor wind breaking out of the parent molecular cloud). This suggestion implies that the actual shape of the SNR's shell is similar to that of the well-known SNR VRO 42.05.01 and that the observed bright arc corresponds to the "half" of the SNR located inside the cloud. We report the discovery in archival radio data of an extended ragged radio arc to the southeast of the bright arc which we interpret as the "half" of the SN blast wave expanding in the intercloud medium.
Bock Douglas C. -J.
Gvaramadze Vasilii V.
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