Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...488..307c&link_type=abstract
Astrophysical Journal v.488, p.307
Astronomy and Astrophysics
Astronomy
17
Ism: Individual Alphanumeric: Ctb 1, Ism: Individual Alphanumeric: G117+0.6, Ism: Supernova Remnants, X-Rays: Ism
Scientific paper
We present ROSAT PSPC observations of the supernova remnant CTB 1 (G116.9 +0.2). The remnant is detected for the first time in the X-ray region. The X-ray morphology places the remnant into the class of center-filled remnants with a centrally peaked X-ray emission profile and accompanying optical and radio shells. The emission is consistent with a thermal plasma with T = 3 x 106 K and absorption NH = 7 x 1021 cm-2. A "breakout" along the northeast rim of the remnant is coincident with the position of an X-ray pulsar. A much larger feature appears to be a partial shell which may be associated with a previous supernova remnant that swept the area around CTB 1 clean. The appearance of the remnant is most easily explained by evaporating clouds. Projection effects caused by an asymmetric remnant are discussed as another, less plausible, explanation.
Craig William W.
Hailey Charles J.
Pisarski Ryszard L.
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