The Connection between the Vela Supernova Remnant, the Optical Nebula RCW 37, and the Young X-Ray Supernova Remnant RX J0852.0-4622

Details The Connection between the Vela Supernova Remnant, the Optical Nebula RCW 37, and the Young X-Ray Supernova Remnant RX J0852.0-4622 The Connection between the Vela Supernova Remnant, the Optical Nebula RCW 37, and the Young X-Ray Supernova Remnant RX J0852.0-4622

Jan 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003rmxac..15..270r&link_type=abstract

Winds, Bubbles, and Explosions: a conference to honor John Dyson, Pátzcuaro, Michoacán, México, September 9-13, 2002 (Eds. S. J.

Astronomy and Astrophysics

Astronomy

Hydrodynamics, Ism: Jets And Outflows, Stars: Winds, Outflows

Scientific paper

The association between the Pencil nebula (RCW 37, NGC 2736), the Vela X-ray fragment D/D^ ' and the recently discovered new X-ray supernova remnant (RX J0852.0-4622) in Vela is investigated. [O III] 5007 Å line profiles of RCW 37 are presented that show the kinematics of this nebula for the first time. A partial velocity ellipse is present in the pv array of line profiles. The kinematics and morphology could suggest that the structure of RCW 37 is that of a thin curved sheet of optical emission that is undergoing a systematic expansion. A simple explanation for the data is that RX J0852.0-4622 has occured within the older, larger Vela SNR and that a portion of the supernova ejecta from RX J0852.0-4622 has impacted the pre-existing cold dense wall of the Vela SNR. The thin sheet of optical emission then traces out the inside edge of this shocked wall while the X-ray emission marks shock-heated gas. This model predicts that the distance to RX J0852.0-4622 will be that of the main Vela SNR which has been recently measured to be of order 250pc.

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