On the Distance and Age of the Pulsar Wind Nebula 3C58

Details On the Distance and Age of the Pulsar Wind Nebula 3C58 On the Distance and Age of the Pulsar Wind Nebula 3C58

2010-10-21

arxiv.org/abs/1010.4586v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

7 pages, 4 figures, to appear in "The Dynamic ISM: A Celebration of the Canadian Galactic Plane Survey", ASP Conference Series

Scientific paper

There is a growing community of astronomers presenting evidence that the pulsar wind nebula 3C58 is much older than the connection with the historical supernova of A.D 1181 would indicate. Most of the strong evidence against a young age for 3C58 relies heavily on the assumed distance of 3.2 kpc determined with HI absorption measurements. I have revisited this distance determination based on new HI data from the Canadian Galactic Plane Survey and added newly determined distances to objects in the neighbourhood, which are based on direct measurements by trigonometric parallax. This leads to a new more reliable distance estimate of 2 kpc for 3C58 and makes the connection between the pulsar wind nebula and the historical event from A.D. 1181 once again much more compelling.

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