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Radio Expansion Studies of Two Historical Supernova Remnants: SN 1006 and SN 1572

Published online by Cambridge University Press:  19 July 2016

David Moffett ,
Caitlin Caldwell ,
Estela Reynoso  and
John Hughes
David Moffett
Affiliation:
Furman University, Greenville, SC 29613, USA
Caitlin Caldwell
Affiliation:
Furman University, Greenville, SC 29613, USA
Estela Reynoso
Affiliation:
Instituto de Astronomia y Fisica del Espacio, Buenos Aires, Argentina
John Hughes
Affiliation:
Rutgers University, Piscataway, NJ 08854, USA

Abstract

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We present results that trace the dynamics of two historical remnants, SN 1006 and SN 1572 (Tycho), for the past two decades. 21-cm radio images of each remnant were recorded during two previous epochs: 1983–1984 and 1991–1994. We obtained third-epoch images of both remnants from 2001 to 2003. After a direct comparison of images from these three epochs, we found the mean radio expansion rate of Tycho now agrees with a previous X-ray expansion study, and for the first time, we have measured the azimuthal expansion rate over the entire rim of SN 1006.

Type
Part 2: Supernova Remnants
Information
Symposium - International Astronomical Union , Volume 218: Young Neutrons Stars and their Environments , 2004 , pp. 69 - 70
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

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