description CTB 109 Overview
CTB 109 is a supernova remnant in the constellation Cassiopeia. It is especially notable because it contains the anomalous X-ray pulsar 1E 2259+586, now classified as a magnetar, providing a well-studied example of an association between a supernova remnant and a highly magnetized neutron star. CTB 109 has been observed at radio and X-ray wavelengths, where its shell and central compact object can be studied together.
help CTB 109 FAQ
What is CTB 109?
CTB 109 is a supernova remnant in the constellation Cassiopeia. It is the expanding debris from a stellar explosion.
Which magnetar is inside CTB 109?
CTB 109 contains the anomalous X-ray pulsar 1E 2259+586. That object is now classified as a magnetar, a neutron star with an extremely strong magnetic field.
Why is CTB 109 scientifically important?
It provides a well-studied association between a supernova remnant and a magnetar. That connection helps astronomers study the birth and later activity of highly magnetized neutron stars.
What does the name CTB 109 refer to?
CTB 109 is a catalog designation for the remnant, not a popular nickname like Crab Nebula. The object is also commonly discussed using the associated pulsar name, 1E 2259+586.
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