RCW103 is a supernova remnant object of interest in space. It lies at a distance of 10,700 light years away in the constellation of Norma. The Supernova Remnant's location is 16:17:28.80 (R.A.) and 51:01:48 (Dec.). .
In the paper Expansion of the supernova Remnant RCW 103, the scientists have calculated that the remnant is likely to be about 2,000 years old. The age is based on how they've calculated the mean expansion rate which is 1100km sec-1.
At the centre of this remnant is believed to be a Magnetar, a magnetically strong neutron star which is spin about 6.5 hours rather than minutes that some other neutron stars have been known to do. To put this is context, the slowest magnetars known until now would spin in seconds not hours. It is possibly the slowest pulsar that has ever been detected.
At the centre of the remnant is the neutron star known as 1E 161348-5055 (1E 1613, for short). Scientists expect pulsars to slow down over time but this neutron star as it ages and looses energy. This pulsar is as said before about 2,000 years, not enough time for such an object to have loose sufficient power to slow down over time. One such reason for the slowness is the debris surrounding the neutron star that is having an effect. Chandra.