Imagine the Universe!

IC443 - A Thermal Composite Remnant

This thermal composite remnant is a cross between a shell-like and Crab-like remnant. To an x-ray astronomer, a composite remnant is one which shows shell- type emission in the radio and plerionic emission in the x-ray. An example of this type of remnant is IC 433.html (below). In this image, red shows radio emission and blue shows X-ray emission. Theory usually predicts that the dominant X-ray emission would be found on the outside rim of the remnant, where the forward shock is located.

The spectrum of the x-rays from the center are thermal, or line dominated.

(Image courtesy of Jonathan Keohane).

image of SNR IC443

Return to the Thermal research page

If words seem to be missing from the articles, please read this.

Imagine the Universe! is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA's Goddard Space Flight Center.

The Imagine Team
Project Leader: Dr. Barbara Mattson
Curator: J.D. Myers
Responsible NASA Official: Phil Newman
All material on this site has been created and updated between 1997-2014.
This page last updated: Monday, 03-Oct-2005 16:15:21 EDT