Abstract
A Chandra observation of the isolated hard X-ray source XMMU J061804.3+222732, located in the region of the apparent interaction of the supernova remnant IC 443 with a molecular cloud, resolved the complex structure of the source in a few bright clumps embedded in an extended emission of ∼30″ in size. The X-ray spectra of the clumps and the extended emission are dominated by a hard power-law component with a photon index of 1.2-1.4. In addition, we see some indications of an optically thin thermal plasma of an ∼0.3 keV temperature. The observed X-ray morphology and spectra are consistent with those expected for an isolated supernova ejecta fragment interacting with a dense ambient medium. A possible alternative interpretation is a pulsar wind nebula associated with either IC 443 or another supernova remnant, G189.6+3.3.
Original language | English (US) |
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Pages (from-to) | L41-L44 |
Journal | Astrophysical Journal |
Volume | 624 |
Issue number | 1 II |
DOIs | |
State | Published - May 1 2005 |
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science